def main(params, config_path):
"""
Function to train and validate a models for semantic segmentation or classification.
:param params: (dict) Parameters found in the yaml config file.
:param config_path: (str) Path to the yaml config file.
"""
debug = get_key_def('debug_mode', params['global'], False)
if debug:
warnings.warn(
f'Debug mode activated. Some debug features may mobilize extra disk space and cause delays in execution.'
)
now = datetime.datetime.now().strftime("%Y-%m-%d_%H-%M")
num_classes = params['global']['num_classes']
task = params['global']['task']
assert task == 'segmentation', f"The task should be segmentation. The provided value is {task}"
num_classes_corrected = num_classes + 1 # + 1 for background # FIXME temporary patch for num_classes problem.
# INSTANTIATE MODEL AND LOAD CHECKPOINT FROM PATH
model, checkpoint, model_name = net(
params,
num_classes_corrected) # pretrained could become a yaml parameter.
tqdm.write(
f'Instantiated {model_name} model with {num_classes_corrected} output channels.\n'
)
bucket_name = params['global']['bucket_name']
data_path = params['global']['data_path']
assert Path(data_path).is_dir(), f'Could not locate data path {data_path}'
samples_size = params["global"]["samples_size"]
overlap = params["sample"]["overlap"]
min_annot_perc = params['sample']['sampling']['map']
num_bands = params['global']['number_of_bands']
samples_folder_name = f'samples{samples_size}_overlap{overlap}_min-annot{min_annot_perc}_{num_bands}bands' # FIXME: preferred name structure? document!
samples_folder = Path(data_path).joinpath(
samples_folder_name) if task == 'segmentation' else Path(data_path)
modelname = config_path.stem
output_path = Path(samples_folder).joinpath('model') / modelname
if output_path.is_dir():
output_path = Path(str(output_path) + '_' + now)
output_path.mkdir(parents=True, exist_ok=False)
shutil.copy(str(config_path), str(output_path))
tqdm.write(f'Model and log files will be saved to: {output_path}\n\n')
task = params['global']['task']
batch_size = params['training']['batch_size']
if bucket_name:
bucket, bucket_output_path, output_path, data_path = download_s3_files(
bucket_name=bucket_name,
data_path=data_path,
output_path=output_path)
since = time.time()
best_loss = 999
last_vis_epoch = 0
progress_log = Path(output_path) / 'progress.log'
if not progress_log.exists():
progress_log.open('w', buffering=1).write(
tsv_line('ep_idx', 'phase', 'iter', 'i_p_ep',
'time')) # Add header
trn_log = InformationLogger(output_path, 'trn')
val_log = InformationLogger(output_path, 'val')
tst_log = InformationLogger(output_path, 'tst')
num_devices = params['global']['num_gpus']
assert num_devices is not None and num_devices >= 0, "missing mandatory num gpus parameter"
# list of GPU devices that are available and unused. If no GPUs, returns empty list
lst_device_ids = get_device_ids(
num_devices) if torch.cuda.is_available() else []
num_devices = len(lst_device_ids) if lst_device_ids else 0
device = torch.device(f'cuda:{lst_device_ids[0]}' if torch.cuda.
is_available() and lst_device_ids else 'cpu')
print(
f"Number of cuda devices requested: {params['global']['num_gpus']}. Cuda devices available: {lst_device_ids}\n"
)
if num_devices == 1:
print(f"Using Cuda device {lst_device_ids[0]}\n")
elif num_devices > 1:
print(
f"Using data parallel on devices: {str(lst_device_ids)[1:-1]}. Main device: {lst_device_ids[0]}\n"
) # TODO: why are we showing indices [1:-1] for lst_device_ids?
try: # FIXME: For HPC when device 0 not available. Error: Invalid device id (in torch/cuda/__init__.py).
model = nn.DataParallel(
model, device_ids=lst_device_ids
) # DataParallel adds prefix 'module.' to state_dict keys
except AssertionError:
warnings.warn(
f"Unable to use devices {lst_device_ids}. Trying devices {list(range(len(lst_device_ids)))}"
)
device = torch.device('cuda:0')
lst_device_ids = range(len(lst_device_ids))
model = nn.DataParallel(
model, device_ids=lst_device_ids
) # DataParallel adds prefix 'module.' to state_dict keys
else:
warnings.warn(
f"No Cuda device available. This process will only run on CPU\n")
tqdm.write(f'Creating dataloaders from data in {samples_folder}...\n')
trn_dataloader, val_dataloader, tst_dataloader = create_dataloader(
data_path=data_path,
batch_size=batch_size,
task=task,
num_devices=num_devices,
params=params,
samples_folder=samples_folder)
tqdm.write(
f'Setting model, criterion, optimizer and learning rate scheduler...\n'
)
model, criterion, optimizer, lr_scheduler = set_hyperparameters(
params, num_classes_corrected, model, checkpoint)
criterion = criterion.to(device)
try: # For HPC when device 0 not available. Error: Cuda invalid device ordinal.
model.to(device)
except RuntimeError:
warnings.warn(f"Unable to use device. Trying device 0...\n")
device = torch.device(f'cuda:0' if torch.cuda.is_available()
and lst_device_ids else 'cpu')
model.to(device)
filename = os.path.join(output_path, 'checkpoint.pth.tar')
# VISUALIZATION: generate pngs of inputs, labels and outputs
vis_batch_range = get_key_def('vis_batch_range', params['visualization'],
None)
if vis_batch_range is not None:
# Make sure user-provided range is a tuple with 3 integers (start, finish, increment). Check once for all visualization tasks.
assert isinstance(vis_batch_range,
list) and len(vis_batch_range) == 3 and all(
isinstance(x, int) for x in vis_batch_range)
vis_at_init = get_key_def('vis_at_init', params['visualization'],
False)
vis_at_init_dataset = get_key_def('vis_at_init_dataset',
params['visualization'], 'val')
if vis_at_init:
tqdm.write(
f'Visualizing initialized model on batch range {vis_batch_range} from {vis_at_init_dataset} dataset...\n'
)
vis_from_dataloader(
params=params,
eval_loader=val_dataloader
if vis_at_init_dataset == 'val' else tst_dataloader,
model=model,
ep_num=0,
output_path=output_path,
dataset=vis_at_init_dataset,
device=device,
vis_batch_range=vis_batch_range)
for epoch in range(0, params['training']['num_epochs']):
print(
f'\nEpoch {epoch}/{params["training"]["num_epochs"] - 1}\n{"-" * 20}'
)
trn_report = train(train_loader=trn_dataloader,
model=model,
criterion=criterion,
optimizer=optimizer,
scheduler=lr_scheduler,
num_classes=num_classes_corrected,
batch_size=batch_size,
task=task,
ep_idx=epoch,
progress_log=progress_log,
vis_params=params,
device=device,
debug=debug)
trn_log.add_values(trn_report,
epoch,
ignore=['precision', 'recall', 'fscore', 'iou'])
val_report = evaluation(
eval_loader=val_dataloader,
model=model,
criterion=criterion,
num_classes=num_classes_corrected,
batch_size=batch_size,
task=task,
ep_idx=epoch,
progress_log=progress_log,
vis_params=params,
batch_metrics=params['training']['batch_metrics'],
dataset='val',
device=device,
debug=debug)
val_loss = val_report['loss'].avg
if params['training']['batch_metrics'] is not None:
val_log.add_values(val_report, epoch)
else:
val_log.add_values(val_report,
epoch,
ignore=['precision', 'recall', 'fscore', 'iou'])
if val_loss < best_loss:
tqdm.write("save checkpoint\n")
best_loss = val_loss
# More info: https://pytorch.org/tutorials/beginner/saving_loading_models.html#saving-torch-nn-dataparallel-models
state_dict = model.module.state_dict(
) if num_devices > 1 else model.state_dict()
torch.save(
{
'epoch': epoch,
'arch': model_name,
'model': state_dict,
'best_loss': best_loss,
'optimizer': optimizer.state_dict()
}, filename)
if bucket_name:
bucket_filename = os.path.join(bucket_output_path,
'checkpoint.pth.tar')
bucket.upload_file(filename, bucket_filename)
# VISUALIZATION: generate png of test samples, labels and outputs for visualisation to follow training performance
vis_at_checkpoint = get_key_def('vis_at_checkpoint',
params['visualization'], False)
ep_vis_min_thresh = get_key_def('vis_at_ckpt_min_ep_diff',
params['visualization'], 4)
vis_at_ckpt_dataset = get_key_def('vis_at_ckpt_dataset',
params['visualization'], 'val')
if vis_batch_range is not None and vis_at_checkpoint and epoch - last_vis_epoch >= ep_vis_min_thresh:
if last_vis_epoch == 0:
tqdm.write(
f'Visualizing with {vis_at_ckpt_dataset} dataset samples on checkpointed model for batches {vis_batch_range}'
)
vis_from_dataloader(
params=params,
eval_loader=val_dataloader
if vis_at_ckpt_dataset == 'val' else tst_dataloader,
model=model,
ep_num=epoch + 1,
output_path=output_path,
dataset=vis_at_ckpt_dataset,
device=device,
vis_batch_range=vis_batch_range)
last_vis_epoch = epoch
if bucket_name:
save_logs_to_bucket(bucket, bucket_output_path, output_path, now,
params['training']['batch_metrics'])
cur_elapsed = time.time() - since
print(
f'Current elapsed time {cur_elapsed // 60:.0f}m {cur_elapsed % 60:.0f}s'
)
# load checkpoint model and evaluate it on test dataset.
if int(
params['training']['num_epochs']
) > 0: #if num_epochs is set to 0, model is loaded to evaluate on test set
checkpoint = load_checkpoint(filename)
model, _ = load_from_checkpoint(checkpoint, model)
if tst_dataloader:
tst_report = evaluation(
eval_loader=tst_dataloader,
model=model,
criterion=criterion,
num_classes=num_classes_corrected,
batch_size=batch_size,
task=task,
ep_idx=params['training']['num_epochs'],
progress_log=progress_log,
vis_params=params,
batch_metrics=params['training']['batch_metrics'],
dataset='tst',
device=device)
tst_log.add_values(tst_report, params['training']['num_epochs'])
if bucket_name:
bucket_filename = os.path.join(bucket_output_path,
'last_epoch.pth.tar')
bucket.upload_file(
"output.txt",
os.path.join(bucket_output_path, f"Logs/{now}_output.txt"))
bucket.upload_file(filename, bucket_filename)
time_elapsed = time.time() - since
print('Training complete in {:.0f}m {:.0f}s'.format(
time_elapsed // 60, time_elapsed % 60))
def main(params: dict):
"""
Identify the class to which each image belongs.
:param params: (dict) Parameters found in the yaml config file.
"""
# SET BASIC VARIABLES AND PATHS
since = time.time()
debug = get_key_def('debug_mode', params['global'], False)
if debug:
warnings.warn(f'Debug mode activated. Some debug features may mobilize extra disk space and cause delays in execution.')
num_classes = params['global']['num_classes']
task = params['global']['task']
num_classes_corrected = add_background_to_num_class(task, num_classes)
chunk_size = get_key_def('chunk_size', params['inference'], 512)
overlap = get_key_def('overlap', params['inference'], 10)
nbr_pix_overlap = int(math.floor(overlap / 100 * chunk_size))
num_bands = params['global']['number_of_bands']
img_dir_or_csv = params['inference']['img_dir_or_csv_file']
default_working_folder = Path(params['inference']['state_dict_path']).parent.joinpath(f'inference_{num_bands}bands')
working_folder = get_key_def('working_folder', params['inference'], None)
if working_folder: # TODO: July 2020: deprecation started. Remove custom working_folder parameter as of Sept 2020?
working_folder = Path(working_folder)
warnings.warn(f"Deprecated parameter. Remove it in your future yamls as this folder is now created "
f"automatically in a logical path, "
f"i.e. [state_dict_path from inference section in yaml]/inference_[num_bands]bands")
else:
working_folder = default_working_folder
Path.mkdir(working_folder, exist_ok=True)
print(f'Inferences will be saved to: {working_folder}\n\n')
bucket = None
bucket_file_cache = []
bucket_name = get_key_def('bucket_name', params['global'])
# CONFIGURE MODEL
model, state_dict_path, model_name = net(params, num_channels=num_classes_corrected, inference=True)
num_devices = params['global']['num_gpus'] if params['global']['num_gpus'] else 0
# list of GPU devices that are available and unused. If no GPUs, returns empty list
lst_device_ids = get_device_ids(num_devices) if torch.cuda.is_available() else []
device = torch.device(f'cuda:{lst_device_ids[0]}' if torch.cuda.is_available() and lst_device_ids else 'cpu')
if lst_device_ids:
print(f"Number of cuda devices requested: {num_devices}. Cuda devices available: {lst_device_ids}. Using {lst_device_ids[0]}\n\n")
else:
warnings.warn(f"No Cuda device available. This process will only run on CPU")
try:
model.to(device)
except RuntimeError:
print(f"Unable to use device. Trying device 0")
device = torch.device(f'cuda:0' if torch.cuda.is_available() and lst_device_ids else 'cpu')
model.to(device)
# CREATE LIST OF INPUT IMAGES FOR INFERENCE
list_img = list_input_images(img_dir_or_csv, bucket_name, glob_patterns=["*.tif", "*.TIF"])
if task == 'classification':
classifier(params, list_img, model, device, working_folder) # FIXME: why don't we load from checkpoint in classification?
elif task == 'segmentation':
if bucket:
bucket.download_file(state_dict_path, "saved_model.pth.tar") # TODO: is this still valid?
model, _ = load_from_checkpoint("saved_model.pth.tar", model)
else:
model, _ = load_from_checkpoint(state_dict_path, model)
ignore_index = get_key_def('ignore_index', params['training'], -1)
meta_map, yaml_metadata = get_key_def("meta_map", params["global"], {}), None
# LOOP THROUGH LIST OF INPUT IMAGES
with tqdm(list_img, desc='image list', position=0) as _tqdm:
for info in _tqdm:
img_name = Path(info['tif']).name
if bucket:
local_img = f"Images/{img_name}"
bucket.download_file(info['tif'], local_img)
inference_image = f"Classified_Images/{img_name.split('.')[0]}_inference.tif"
if info['meta']:
if info['meta'] not in bucket_file_cache:
bucket_file_cache.append(info['meta'])
bucket.download_file(info['meta'], info['meta'].split('/')[-1])
info['meta'] = info['meta'].split('/')[-1]
else: # FIXME: else statement should support img['meta'] integration as well.
local_img = Path(info['tif'])
inference_image = working_folder.joinpath(f"{img_name.split('.')[0]}_inference.tif")
assert local_img.is_file(), f"Could not open raster file at {local_img}"
# Empty sample as dictionary
inf_sample = {'sat_img': None, 'metadata': None}
with rasterio.open(local_img, 'r') as raster_handle:
inf_sample['sat_img'], raster_handle_updated, dataset_nodata = image_reader_as_array(
input_image=raster_handle,
aux_vector_file=get_key_def('aux_vector_file', params['global'], None),
aux_vector_attrib=get_key_def('aux_vector_attrib', params['global'], None),
aux_vector_ids=get_key_def('aux_vector_ids', params['global'], None),
aux_vector_dist_maps=get_key_def('aux_vector_dist_maps', params['global'], True),
aux_vector_scale=get_key_def('aux_vector_scale', params['global'], None))
inf_sample['metadata'] = add_metadata_from_raster_to_sample(sat_img_arr=inf_sample['sat_img'],
raster_handle=raster_handle_updated,
meta_map=meta_map,
raster_info=info)
_tqdm.set_postfix(OrderedDict(img_name=img_name,
img=inf_sample['sat_img'].shape,
img_min_val=np.min(inf_sample['sat_img']),
img_max_val=np.max(inf_sample['sat_img'])))
input_band_count = inf_sample['sat_img'].shape[2] + MetaSegmentationDataset.get_meta_layer_count(meta_map)
if input_band_count > num_bands: # TODO: move as new function in utils.verifications
# FIXME: Following statements should be reconsidered to better manage inconsistencies between
# provided number of band and image number of band.
warnings.warn(f"Input image has more band than the number provided in the yaml file ({num_bands}). "
f"Will use the first {num_bands} bands of the input image.")
inf_sample['sat_img'] = inf_sample['sat_img'][:, :, 0:num_bands]
print(f"Input image's new shape: {inf_sample['sat_img'].shape}")
elif input_band_count < num_bands:
warnings.warn(f"Skipping image: The number of bands requested in the yaml file ({num_bands})"
f"can not be larger than the number of band in the input image ({input_band_count}).")
continue
# START INFERENCES ON SUB-IMAGES
sem_seg_results_per_class = sem_seg_inference(model,
inf_sample['sat_img'],
nbr_pix_overlap,
chunk_size,
num_classes_corrected,
device,
meta_map,
inf_sample['metadata'],
output_path=working_folder,
index=_tqdm.n,
debug=debug)
# CREATE GEOTIF FROM METADATA OF ORIGINAL IMAGE
tqdm.write(f'Saving inference...\n')
if get_key_def('heatmaps', params['inference'], False):
tqdm.write(f'Heatmaps will be saved.\n')
vis(params, inf_sample['sat_img'], sem_seg_results_per_class, working_folder, inference_input_path=local_img, debug=debug)
tqdm.write(f"\n\nSemantic segmentation of image {img_name} completed\n\n")
if bucket:
bucket.upload_file(inference_image, os.path.join(working_folder, f"{img_name.split('.')[0]}_inference.tif"))
else:
raise ValueError(
f"The task should be either classification or segmentation. The provided value is {params['global']['task']}")
time_elapsed = time.time() - since
print('Inference completed in {:.0f}m {:.0f}s'.format(time_elapsed // 60, time_elapsed % 60))
def main(params):
"""
Identify the class to which each image belongs.
:param params: (dict) Parameters found in the yaml config file.
"""
# SET BASIC VARIABLES AND PATHS
since = time.time()
debug = get_key_def('debug_mode', params['global'], False)
if debug:
warnings.warn(f'Debug mode activated. Some debug features may mobilize extra disk space and cause delays in execution.')
num_classes = params['global']['num_classes']
if params['global']['task'] == 'segmentation':
# assume background is implicitly needed (makes no sense to predict with one class, for example.)
# this will trigger some warnings elsewhere, but should succeed nonetheless
num_classes_corrected = num_classes + 1 # + 1 for background # FIXME temporary patch for num_classes problem.
elif params['global']['task'] == 'classification':
num_classes_corrected = num_classes
chunk_size = get_key_def('chunk_size', params['inference'], 512)
overlap = get_key_def('overlap', params['inference'], 10)
nbr_pix_overlap = int(math.floor(overlap / 100 * chunk_size))
num_bands = params['global']['number_of_bands']
img_dir_or_csv = params['inference']['img_dir_or_csv_file']
default_working_folder = Path(params['inference']['state_dict_path']).parent.joinpath(f'inference_{num_bands}bands')
working_folder = Path(get_key_def('working_folder', params['inference'], default_working_folder)) # TODO: remove working_folder parameter in all templates
Path.mkdir(working_folder, exist_ok=True)
print(f'Inferences will be saved to: {working_folder}\n\n')
bucket = None
bucket_file_cache = []
bucket_name = params['global']['bucket_name']
# CONFIGURE MODEL
model, state_dict_path, model_name = net(params, num_channels=num_classes_corrected, inference=True)
num_devices = params['global']['num_gpus'] if params['global']['num_gpus'] else 0
# list of GPU devices that are available and unused. If no GPUs, returns empty list
lst_device_ids = get_device_ids(num_devices) if torch.cuda.is_available() else []
device = torch.device(f'cuda:{lst_device_ids[0]}' if torch.cuda.is_available() and lst_device_ids else 'cpu')
if lst_device_ids:
print(f"Number of cuda devices requested: {num_devices}. Cuda devices available: {lst_device_ids}. Using {lst_device_ids[0]}\n\n")
else:
warnings.warn(f"No Cuda device available. This process will only run on CPU")
try:
model.to(device)
except RuntimeError:
print(f"Unable to use device. Trying device 0")
device = torch.device(f'cuda:0' if torch.cuda.is_available() and lst_device_ids else 'cpu')
model.to(device)
if bucket_name:
s3 = boto3.resource('s3')
bucket = s3.Bucket(bucket_name)
if img_dir_or_csv.endswith('.csv'):
bucket.download_file(img_dir_or_csv, 'img_csv_file.csv')
list_img = read_csv('img_csv_file.csv', inference=True)
else:
raise NotImplementedError(
'Specify a csv file containing images for inference. Directory input not implemented yet')
else:
if img_dir_or_csv.endswith('.csv'):
list_img = read_csv(img_dir_or_csv, inference=True)
else:
img_dir = Path(img_dir_or_csv)
assert img_dir.is_dir(), f'Could not find directory "{img_dir_or_csv}"'
list_img_paths = sorted(img_dir.glob('*.tif')) # FIXME: what if .tif is in caps (.TIF) ?
list_img = []
for img_path in list_img_paths:
img = {}
img['tif'] = img_path
list_img.append(img)
assert len(list_img) >= 0, f'No .tif files found in {img_dir_or_csv}'
if params['global']['task'] == 'classification':
classifier(params, list_img, model, device, working_folder) # FIXME: why don't we load from checkpoint in classification?
elif params['global']['task'] == 'segmentation':
if bucket:
bucket.download_file(state_dict_path, "saved_model.pth.tar")
model, _ = load_from_checkpoint("saved_model.pth.tar", model, inference=True)
else:
model, _ = load_from_checkpoint(state_dict_path, model, inference=True)
with tqdm(list_img, desc='image list', position=0) as _tqdm:
for img in _tqdm:
img_name = Path(img['tif']).name
if bucket:
local_img = f"Images/{img_name}"
bucket.download_file(img['tif'], local_img)
inference_image = f"Classified_Images/{img_name.split('.')[0]}_inference.tif"
if img['meta']:
if img['meta'] not in bucket_file_cache:
bucket_file_cache.append(img['meta'])
bucket.download_file(img['meta'], img['meta'].split('/')[-1])
img['meta'] = img['meta'].split('/')[-1]
else:
local_img = Path(img['tif'])
inference_image = working_folder.joinpath(f"{img_name.split('.')[0]}_inference.tif")
assert local_img.is_file(), f"Could not open raster file at {local_img}"
scale = get_key_def('scale_data', params['global'], None)
with rasterio.open(local_img, 'r') as raster:
np_input_image = image_reader_as_array(input_image=raster,
scale=scale,
aux_vector_file=get_key_def('aux_vector_file',
params['global'], None),
aux_vector_attrib=get_key_def('aux_vector_attrib',
params['global'], None),
aux_vector_ids=get_key_def('aux_vector_ids',
params['global'], None),
aux_vector_dist_maps=get_key_def('aux_vector_dist_maps',
params['global'], True),
aux_vector_scale=get_key_def('aux_vector_scale',
params['global'], None))
meta_map, metadata = get_key_def("meta_map", params["global"], {}), None
if meta_map:
assert img['meta'] is not None and isinstance(img['meta'], str) and os.path.isfile(img['meta']), \
"global configuration requested metadata mapping onto loaded samples, but raster did not have available metadata"
metadata = read_parameters(img['meta'])
if debug:
_tqdm.set_postfix(OrderedDict(img_name=img_name,
img=np_input_image.shape,
img_min_val=np.min(np_input_image),
img_max_val=np.max(np_input_image)))
input_band_count = np_input_image.shape[2] + MetaSegmentationDataset.get_meta_layer_count(meta_map)
if input_band_count > params['global']['number_of_bands']:
# FIXME: Following statements should be reconsidered to better manage inconsistencies between
# provided number of band and image number of band.
warnings.warn(f"Input image has more band than the number provided in the yaml file ({params['global']['number_of_bands']}). "
f"Will use the first {params['global']['number_of_bands']} bands of the input image.")
np_input_image = np_input_image[:, :, 0:params['global']['number_of_bands']]
print(f"Input image's new shape: {np_input_image.shape}")
elif input_band_count < params['global']['number_of_bands']:
warnings.warn(f"Skipping image: The number of bands requested in the yaml file ({params['global']['number_of_bands']})"
f"can not be larger than the number of band in the input image ({input_band_count}).")
continue
# START INFERENCES ON SUB-IMAGES
sem_seg_results_per_class = sem_seg_inference(model, np_input_image, nbr_pix_overlap, chunk_size, num_classes_corrected,
device, meta_map, metadata, output_path=working_folder, index=_tqdm.n, debug=debug)
# CREATE GEOTIF FROM METADATA OF ORIGINAL IMAGE
tqdm.write(f'Saving inference...\n')
if get_key_def('heatmaps', params['inference'], False):
tqdm.write(f'Heatmaps will be saved.\n')
vis(params, np_input_image, sem_seg_results_per_class, working_folder, inference_input_path=local_img, debug=debug)
tqdm.write(f"\n\nSemantic segmentation of image {img_name} completed\n\n")
if bucket:
bucket.upload_file(inference_image, os.path.join(working_folder, f"{img_name.split('.')[0]}_inference.tif"))
else:
raise ValueError(
f"The task should be either classification or segmentation. The provided value is {params['global']['task']}")
time_elapsed = time.time() - since
print('Inference completed in {:.0f}m {:.0f}s'.format(time_elapsed // 60, time_elapsed % 60))
def net(net_params, num_channels, inference=False):
"""Define the neural net"""
model_name = net_params['global']['model_name'].lower()
num_bands = int(net_params['global']['number_of_bands'])
msg = f'Number of bands specified incompatible with this model. Requires 3 band data.'
train_state_dict_path = get_key_def('state_dict_path', net_params['training'], None)
pretrained = get_key_def('pretrained', net_params['training'], True) if not inference else False
dropout = get_key_def('dropout', net_params['training'], False)
dropout_prob = get_key_def('dropout_prob', net_params['training'], 0.5)
dontcare_val = get_key_def("ignore_index", net_params["training"], -1)
num_devices = net_params['global']['num_gpus']
if dontcare_val == 0:
warnings.warn("The 'dontcare' value (or 'ignore_index') used in the loss function cannot be zero;"
" all valid class indices should be consecutive, and start at 0. The 'dontcare' value"
" will be remapped to -1 while loading the dataset, and inside the config from now on.")
net_params["training"]["ignore_index"] = -1
# TODO: find a way to maybe implement it in classification one day
if 'concatenate_depth' in net_params['global']:
# Read the concatenation point
conc_point = net_params['global']['concatenate_depth']
if model_name == 'unetsmall':
model = unet.UNetSmall(num_channels, num_bands, dropout, dropout_prob)
elif model_name == 'unet':
model = unet.UNet(num_channels, num_bands, dropout, dropout_prob)
elif model_name == 'ternausnet':
assert num_bands == 3, msg
model = TernausNet.ternausnet(num_channels)
elif model_name == 'checkpointed_unet':
model = checkpointed_unet.UNetSmall(num_channels, num_bands, dropout, dropout_prob)
elif model_name == 'inception':
model = inception.Inception3(num_channels, num_bands)
elif model_name == 'fcn_resnet101':
assert num_bands == 3, msg
model = models.segmentation.fcn_resnet101(pretrained=False, progress=True, num_classes=num_channels,
aux_loss=None)
elif model_name == 'deeplabv3_resnet101':
assert (num_bands == 3 or num_bands == 4), msg
if num_bands == 3:
print('Finetuning pretrained deeplabv3 with 3 bands')
model = models.segmentation.deeplabv3_resnet101(pretrained=pretrained, progress=True)
classifier = list(model.classifier.children())
model.classifier = nn.Sequential(*classifier[:-1])
model.classifier.add_module('4', nn.Conv2d(classifier[-1].in_channels, num_channels, kernel_size=(1, 1)))
elif num_bands == 4:
print('Finetuning pretrained deeplabv3 with 4 bands')
print('Testing with 4 bands, concatenating at {}.'.format(conc_point))
model = models.segmentation.deeplabv3_resnet101(pretrained=pretrained, progress=True)
if conc_point=='baseline':
conv1 = model.backbone._modules['conv1'].weight.detach().numpy()
depth = np.expand_dims(conv1[:, 1, ...], axis=1) # reuse green weights for infrared.
conv1 = np.append(conv1, depth, axis=1)
conv1 = torch.from_numpy(conv1).float()
model.backbone._modules['conv1'].weight = nn.Parameter(conv1, requires_grad=True)
classifier = list(model.classifier.children())
model.classifier = nn.Sequential(*classifier[:-1])
model.classifier.add_module(
'4', nn.Conv2d(classifier[-1].in_channels, num_channels, kernel_size=(1, 1))
)
else:
classifier = list(model.classifier.children())
model.classifier = nn.Sequential(*classifier[:-1])
model.classifier.add_module(
'4', nn.Conv2d(classifier[-1].in_channels, num_channels, kernel_size=(1, 1))
)
###################
#conv1 = model.backbone._modules['conv1'].weight.detach().numpy()
#depth = np.random.uniform(low=-1, high=1, size=(64, 1, 7, 7))
#conv1 = np.append(conv1, depth, axis=1)
#conv1 = torch.from_numpy(conv1).float()
#model.backbone._modules['conv1'].weight = nn.Parameter(conv1, requires_grad=True)
###################
model = LayersEnsemble(model, conc_point=conc_point)
elif model_name in lm_smp.keys():
lsmp = lm_smp[model_name]
# TODO: add possibility of our own weights
lsmp['params']['encoder_weights'] = "imagenet" if 'pretrained' in model_name.split("_") else None
lsmp['params']['in_channels'] = num_bands
lsmp['params']['classes'] = num_channels
lsmp['params']['activation'] = None
model = lsmp['fct'](**lsmp['params'])
else:
raise ValueError(f'The model name {model_name} in the config.yaml is not defined.')
coordconv_convert = get_key_def('coordconv_convert', net_params['global'], False)
if coordconv_convert:
centered = get_key_def('coordconv_centered', net_params['global'], True)
normalized = get_key_def('coordconv_normalized', net_params['global'], True)
noise = get_key_def('coordconv_noise', net_params['global'], None)
radius_channel = get_key_def('coordconv_radius_channel', net_params['global'], False)
scale = get_key_def('coordconv_scale', net_params['global'], 1.0)
# note: this operation will not attempt to preserve already-loaded model parameters!
model = coordconv.swap_coordconv_layers(model, centered=centered, normalized=normalized, noise=noise,
radius_channel=radius_channel, scale=scale)
if inference:
state_dict_path = net_params['inference']['state_dict_path']
assert Path(net_params['inference']['state_dict_path']).is_file(), f"Could not locate {net_params['inference']['state_dict_path']}"
checkpoint = load_checkpoint(state_dict_path)
return model, checkpoint, model_name
else:
if train_state_dict_path is not None:
assert Path(train_state_dict_path).is_file(), f'Could not locate checkpoint at {train_state_dict_path}'
checkpoint = load_checkpoint(train_state_dict_path)
else:
checkpoint = None
assert num_devices is not None and num_devices >= 0, "missing mandatory num gpus parameter"
# list of GPU devices that are available and unused. If no GPUs, returns empty list
lst_device_ids = get_device_ids(num_devices) if torch.cuda.is_available() else []
num_devices = len(lst_device_ids) if lst_device_ids else 0
device = torch.device(f'cuda:{lst_device_ids[0]}' if torch.cuda.is_available() and lst_device_ids else 'cpu')
print(f"Number of cuda devices requested: {net_params['global']['num_gpus']}. Cuda devices available: {lst_device_ids}\n")
if num_devices == 1:
print(f"Using Cuda device {lst_device_ids[0]}\n")
elif num_devices > 1:
print(f"Using data parallel on devices: {str(lst_device_ids)[1:-1]}. Main device: {lst_device_ids[0]}\n") # TODO: why are we showing indices [1:-1] for lst_device_ids?
try: # For HPC when device 0 not available. Error: Invalid device id (in torch/cuda/__init__.py).
model = nn.DataParallel(model,
device_ids=lst_device_ids) # DataParallel adds prefix 'module.' to state_dict keys
except AssertionError:
warnings.warn(f"Unable to use devices {lst_device_ids}. Trying devices {list(range(len(lst_device_ids)))}")
device = torch.device('cuda:0')
lst_device_ids = range(len(lst_device_ids))
model = nn.DataParallel(model,
device_ids=lst_device_ids) # DataParallel adds prefix 'module.' to state_dict keys
else:
warnings.warn(f"No Cuda device available. This process will only run on CPU\n")
tqdm.write(f'Setting model, criterion, optimizer and learning rate scheduler...\n')
try: # For HPC when device 0 not available. Error: Cuda invalid device ordinal.
model.to(device)
except RuntimeError:
warnings.warn(f"Unable to use device. Trying device 0...\n")
device = torch.device(f'cuda:0' if torch.cuda.is_available() and lst_device_ids else 'cpu')
model.to(device)
model, criterion, optimizer, lr_scheduler = set_hyperparameters(net_params, num_channels, model, checkpoint, dontcare_val)
criterion = criterion.to(device)
return model, model_name, criterion, optimizer, lr_scheduler
def main(params: dict):
"""
Identify the class to which each image belongs.
:param params: (dict) Parameters found in the yaml config file.
"""
since = time.time()
# MANDATORY PARAMETERS
img_dir_or_csv = get_key_def('img_dir_or_csv_file',
params['inference'],
expected_type=str)
state_dict = get_key_def('state_dict_path', params['inference'])
task = get_key_def('task', params['global'], expected_type=str)
if task not in ['classification', 'segmentation']:
raise ValueError(
f'Task should be either "classification" or "segmentation". Got {task}'
)
model_name = get_key_def('model_name', params['global'],
expected_type=str).lower()
num_classes = get_key_def('num_classes',
params['global'],
expected_type=int)
num_bands = get_key_def('number_of_bands',
params['global'],
expected_type=int)
chunk_size = get_key_def('chunk_size',
params['inference'],
default=512,
expected_type=int)
BGR_to_RGB = get_key_def('BGR_to_RGB',
params['global'],
expected_type=bool)
# OPTIONAL PARAMETERS
dontcare_val = get_key_def("ignore_index",
params["training"],
default=-1,
expected_type=int)
num_devices = get_key_def('num_gpus',
params['global'],
default=0,
expected_type=int)
default_max_used_ram = 25
max_used_ram = get_key_def('max_used_ram',
params['global'],
default=default_max_used_ram,
expected_type=int)
max_used_perc = get_key_def('max_used_perc',
params['global'],
default=25,
expected_type=int)
scale = get_key_def('scale_data',
params['global'],
default=[0, 1],
expected_type=List)
debug = get_key_def('debug_mode',
params['global'],
default=False,
expected_type=bool)
raster_to_vec = get_key_def('ras2vec', params['inference'], False)
# benchmark (ie when gkpgs are inputted along with imagery)
dontcare = get_key_def("ignore_index", params["training"], -1)
targ_ids = get_key_def('target_ids',
params['sample'],
None,
expected_type=List)
# SETTING OUTPUT DIRECTORY
working_folder = Path(
params['inference']['state_dict_path']).parent.joinpath(
f'inference_{num_bands}bands')
Path.mkdir(working_folder, parents=True, exist_ok=True)
# mlflow logging
mlflow_uri = get_key_def('mlflow_uri',
params['global'],
default=None,
expected_type=str)
if mlflow_uri and not Path(mlflow_uri).is_dir():
warnings.warn(f'Mlflow uri path is not valid: {mlflow_uri}')
mlflow_uri = None
# SETUP LOGGING
import logging.config # See: https://docs.python.org/2.4/lib/logging-config-fileformat.html
if mlflow_uri:
log_config_path = Path('utils/logging.conf').absolute()
logfile = f'{working_folder}/info.log'
logfile_debug = f'{working_folder}/debug.log'
console_level_logging = 'INFO' if not debug else 'DEBUG'
logging.config.fileConfig(log_config_path,
defaults={
'logfilename': logfile,
'logfilename_debug': logfile_debug,
'console_level': console_level_logging
})
# import only if mlflow uri is set
from mlflow import log_params, set_tracking_uri, set_experiment, start_run, log_artifact, log_metrics
if not Path(mlflow_uri).is_dir():
logging.warning(
f"Couldn't locate mlflow uri directory {mlflow_uri}. Directory will be created."
)
Path(mlflow_uri).mkdir()
set_tracking_uri(mlflow_uri)
exp_name = get_key_def('mlflow_experiment_name',
params['global'],
default='gdl-inference',
expected_type=str)
set_experiment(f'{exp_name}/{working_folder.name}')
run_name = get_key_def('mlflow_run_name',
params['global'],
default='gdl',
expected_type=str)
start_run(run_name=run_name)
log_params(params['global'])
log_params(params['inference'])
else:
# set a console logger as default
logging.basicConfig(level=logging.DEBUG)
logging.info(
'No logging folder set for mlflow. Logging will be limited to console'
)
if debug:
logging.warning(
f'Debug mode activated. Some debug features may mobilize extra disk space and '
f'cause delays in execution.')
# Assert that all items in target_ids are integers (ex.: to benchmark single-class model with multi-class labels)
if targ_ids:
for item in targ_ids:
if not isinstance(item, int):
raise ValueError(
f'Target id "{item}" in target_ids is {type(item)}, expected int.'
)
logging.info(f'Inferences will be saved to: {working_folder}\n\n')
if not (0 <= max_used_ram <= 100):
logging.warning(
f'Max used ram parameter should be a percentage. Got {max_used_ram}. '
f'Will set default value of {default_max_used_ram} %')
max_used_ram = default_max_used_ram
# AWS
bucket = None
bucket_file_cache = []
bucket_name = get_key_def('bucket_name', params['global'])
# list of GPU devices that are available and unused. If no GPUs, returns empty dict
gpu_devices_dict = get_device_ids(num_devices,
max_used_ram_perc=max_used_ram,
max_used_perc=max_used_perc)
if gpu_devices_dict:
logging.info(
f"Number of cuda devices requested: {num_devices}. Cuda devices available: {gpu_devices_dict}. "
f"Using {list(gpu_devices_dict.keys())[0]}\n\n")
device = torch.device(
f'cuda:{list(range(len(gpu_devices_dict.keys())))[0]}')
else:
logging.warning(
f"No Cuda device available. This process will only run on CPU")
device = torch.device('cpu')
# CONFIGURE MODEL
num_classes_backgr = add_background_to_num_class(task, num_classes)
model, loaded_checkpoint, model_name = net(model_name=model_name,
num_bands=num_bands,
num_channels=num_classes_backgr,
dontcare_val=dontcare_val,
num_devices=1,
net_params=params,
inference_state_dict=state_dict)
try:
model.to(device)
except RuntimeError:
logging.info(f"Unable to use device 0")
device = torch.device(f'cuda' if gpu_devices_dict else 'cpu')
model.to(device)
# CREATE LIST OF INPUT IMAGES FOR INFERENCE
list_img = list_input_images(img_dir_or_csv,
bucket_name,
glob_patterns=["*.tif", "*.TIF"])
# VALIDATION: anticipate problems with imagery and label (if provided) before entering main for loop
valid_gpkg_set = set()
for info in tqdm(list_img, desc='Validating imagery'):
# validate_raster(info['tif'], num_bands, meta_map)
if 'gpkg' in info.keys(
) and info['gpkg'] and info['gpkg'] not in valid_gpkg_set:
validate_num_classes(vector_file=info['gpkg'],
num_classes=num_classes,
attribute_name=info['attribute_name'],
ignore_index=dontcare,
target_ids=targ_ids)
assert_crs_match(info['tif'], info['gpkg'])
valid_gpkg_set.add(info['gpkg'])
logging.info('Successfully validated imagery')
if valid_gpkg_set:
logging.info('Successfully validated label data for benchmarking')
if task == 'classification':
classifier(
params, list_img, model, device, working_folder
) # FIXME: why don't we load from checkpoint in classification?
elif task == 'segmentation':
gdf_ = []
gpkg_name_ = []
# TODO: Add verifications?
if bucket:
bucket.download_file(
loaded_checkpoint,
"saved_model.pth.tar") # TODO: is this still valid?
model, _ = load_from_checkpoint("saved_model.pth.tar", model)
else:
model, _ = load_from_checkpoint(loaded_checkpoint, model)
# LOOP THROUGH LIST OF INPUT IMAGES
for info in tqdm(list_img,
desc='Inferring from images',
position=0,
leave=True):
with start_run(run_name=Path(info['tif']).name, nested=True):
img_name = Path(info['tif']).name
local_gpkg = Path(
info['gpkg']
) if 'gpkg' in info.keys() and info['gpkg'] else None
gpkg_name = local_gpkg.stem if local_gpkg else None
if bucket:
local_img = f"Images/{img_name}"
bucket.download_file(info['tif'], local_img)
inference_image = f"Classified_Images/{img_name.split('.')[0]}_inference.tif"
if info['meta']:
if info['meta'] not in bucket_file_cache:
bucket_file_cache.append(info['meta'])
bucket.download_file(info['meta'],
info['meta'].split('/')[-1])
info['meta'] = info['meta'].split('/')[-1]
else: # FIXME: else statement should support img['meta'] integration as well.
local_img = Path(info['tif'])
Path.mkdir(working_folder.joinpath(local_img.parent.name),
parents=True,
exist_ok=True)
inference_image = working_folder.joinpath(
local_img.parent.name,
f"{img_name.split('.')[0]}_inference.tif")
temp_file = working_folder.joinpath(
local_img.parent.name, f"{img_name.split('.')[0]}.dat")
raster = rasterio.open(local_img, 'r')
logging.info(f'Reading original image: {raster.name}')
inf_meta = raster.meta
label = None
if local_gpkg:
logging.info(f'Burning label as raster: {local_gpkg}')
local_img = clip_raster_with_gpkg(raster, local_gpkg)
raster.close()
raster = rasterio.open(local_img, 'r')
logging.info(f'Reading clipped image: {raster.name}')
inf_meta = raster.meta
label = vector_to_raster(
vector_file=local_gpkg,
input_image=raster,
out_shape=(inf_meta['height'], inf_meta['width']),
attribute_name=info['attribute_name'],
fill=0, # background value in rasterized vector.
target_ids=targ_ids)
if debug:
logging.debug(
f'Unique values in loaded label as raster: {np.unique(label)}\n'
f'Shape of label as raster: {label.shape}')
pred, gdf = segmentation(param=params,
input_image=raster,
label_arr=label,
num_classes=num_classes_backgr,
gpkg_name=gpkg_name,
model=model,
chunk_size=chunk_size,
device=device,
scale=scale,
BGR_to_RGB=BGR_to_RGB,
tp_mem=temp_file,
debug=debug)
if gdf is not None:
gdf_.append(gdf)
gpkg_name_.append(gpkg_name)
if local_gpkg:
pixelMetrics = ComputePixelMetrics(label, pred,
num_classes_backgr)
log_metrics(pixelMetrics.update(pixelMetrics.iou))
log_metrics(pixelMetrics.update(pixelMetrics.dice))
pred = pred[np.newaxis, :, :].astype(np.uint8)
inf_meta.update({
"driver": "GTiff",
"height": pred.shape[1],
"width": pred.shape[2],
"count": pred.shape[0],
"dtype": 'uint8',
"compress": 'lzw'
})
logging.info(
f'Successfully inferred on {img_name}\nWriting to file: {inference_image}'
)
with rasterio.open(inference_image, 'w+', **inf_meta) as dest:
dest.write(pred)
del pred
try:
temp_file.unlink()
except OSError as e:
logging.warning(f'File Error: {temp_file, e.strerror}')
if raster_to_vec:
start_vec = time.time()
inference_vec = working_folder.joinpath(
local_img.parent.name,
f"{img_name.split('.')[0]}_inference.gpkg")
ras2vec(inference_image, inference_vec)
end_vec = time.time() - start_vec
logging.info(
'Vectorization completed in {:.0f}m {:.0f}s'.format(
end_vec // 60, end_vec % 60))
if len(gdf_) >= 1:
if not len(gdf_) == len(gpkg_name_):
raise ValueError('benchmarking unable to complete')
all_gdf = pd.concat(
gdf_) # Concatenate all geo data frame into one geo data frame
all_gdf.reset_index(drop=True, inplace=True)
gdf_x = gpd.GeoDataFrame(all_gdf)
bench_gpkg = working_folder / "benchmark.gpkg"
gdf_x.to_file(bench_gpkg, driver="GPKG", index=False)
logging.info(
f'Successfully wrote benchmark geopackage to: {bench_gpkg}')
# log_artifact(working_folder)
time_elapsed = time.time() - since
logging.info('Inference Script completed in {:.0f}m {:.0f}s'.format(
time_elapsed // 60, time_elapsed % 60))
def main(params: dict) -> None:
"""
Function to manage details about the inference on segmentation task.
1. Read the parameters from the config given.
2. Read and load the state dict from the previous training or the given one.
3. Make the inference on the data specifies in the config.
-------
:param params: (dict) Parameters found in the yaml config file.
"""
# since = time.time()
# PARAMETERS
mode = get_key_def('mode', params, expected_type=str)
task = get_key_def('task_name', params['task'], expected_type=str)
model_name = get_key_def('model_name', params['model'], expected_type=str).lower()
num_classes = len(get_key_def('classes_dict', params['dataset']).keys())
modalities = read_modalities(get_key_def('modalities', params['dataset'], expected_type=str))
BGR_to_RGB = get_key_def('BGR_to_RGB', params['dataset'], expected_type=bool)
num_bands = len(modalities)
debug = get_key_def('debug', params, default=False, expected_type=bool)
# SETTING OUTPUT DIRECTORY
try:
state_dict = Path(params['inference']['state_dict_path']).resolve(strict=True)
except FileNotFoundError:
logging.info(
f"\nThe state dict path directory '{params['inference']['state_dict_path']}' don't seem to be find," +
f"we will try to locate a state dict path in the '{params['general']['save_weights_dir']}' " +
f"specify during the training phase"
)
try:
state_dict = Path(params['general']['save_weights_dir']).resolve(strict=True)
except FileNotFoundError:
raise logging.critical(
f"\nThe state dict path directory '{params['general']['save_weights_dir']}'" +
f" don't seem to be find either, please specify the path to a state dict"
)
# TODO add more detail in the parent folder
working_folder = state_dict.parent.joinpath(f'inference_{num_bands}bands')
logging.info("\nThe state dict path directory used '{}'".format(working_folder))
Path.mkdir(working_folder, parents=True, exist_ok=True)
# LOGGING PARAMETERS TODO put option not just mlflow
experiment_name = get_key_def('project_name', params['general'], default='gdl-training')
try:
tracker_uri = get_key_def('uri', params['tracker'], default=None, expected_type=str)
Path(tracker_uri).mkdir(exist_ok=True)
run_name = get_key_def('run_name', params['tracker'], default='gdl') # TODO change for something meaningful
run_name = '{}_{}_{}'.format(run_name, mode, task)
logging.info(f'\nInference and log files will be saved to: {working_folder}')
# TODO change to fit whatever inport
from mlflow import log_params, set_tracking_uri, set_experiment, start_run, log_artifact, log_metrics
# tracking path + parameters logging
set_tracking_uri(tracker_uri)
set_experiment(experiment_name)
start_run(run_name=run_name)
log_params(dict_path(params, 'general'))
log_params(dict_path(params, 'dataset'))
log_params(dict_path(params, 'data'))
log_params(dict_path(params, 'model'))
log_params(dict_path(params, 'inference'))
# meaning no logging tracker as been assigned or it doesnt exist in config/logging
except ConfigKeyError:
logging.info(
"\nNo logging tracker as been assigned or the yaml config doesnt exist in 'config/tracker'."
"\nNo tracker file will be save in that case."
)
# MANDATORY PARAMETERS
img_dir_or_csv = get_key_def(
'img_dir_or_csv_file', params['inference'], default=params['general']['raw_data_csv'], expected_type=str
)
if not (Path(img_dir_or_csv).is_dir() or Path(img_dir_or_csv).suffix == '.csv'):
raise logging.critical(
FileNotFoundError(
f'\nCouldn\'t locate .csv file or directory "{img_dir_or_csv}" containing imagery for inference'
)
)
# load the checkpoint
try:
# Sort by modification time (mtime) descending
sorted_by_mtime_descending = sorted(
[os.path.join(state_dict, x) for x in os.listdir(state_dict)], key=lambda t: -os.stat(t).st_mtime
)
last_checkpoint_save = find_first_file('checkpoint.pth.tar', sorted_by_mtime_descending)
if last_checkpoint_save is None:
raise FileNotFoundError
# change the state_dict
state_dict = last_checkpoint_save
except FileNotFoundError as e:
logging.error(f"\nNo file name 'checkpoint.pth.tar' as been found at '{state_dict}'")
raise e
task = get_key_def('task_name', params['task'], expected_type=str)
# TODO change it next version for all task
if task not in ['classification', 'segmentation']:
raise logging.critical(
ValueError(f'\nTask should be either "classification" or "segmentation". Got {task}')
)
# OPTIONAL PARAMETERS
dontcare_val = get_key_def("ignore_index", params["training"], default=-1, expected_type=int)
num_devices = get_key_def('num_gpus', params['training'], default=0, expected_type=int)
default_max_used_ram = 25
max_used_ram = get_key_def('max_used_ram', params['training'], default=default_max_used_ram, expected_type=int)
max_used_perc = get_key_def('max_used_perc', params['training'], default=25, expected_type=int)
scale = get_key_def('scale_data', params['augmentation'], default=[0, 1], expected_type=ListConfig)
raster_to_vec = get_key_def('ras2vec', params['inference'], False) # FIXME not implemented with hydra
# benchmark (ie when gkpgs are inputted along with imagery)
dontcare = get_key_def("ignore_index", params["training"], -1)
targ_ids = None # TODO get_key_def('target_ids', params['sample'], None, expected_type=List)
if debug:
logging.warning(f'\nDebug mode activated. Some debug features may mobilize extra disk space and '
f'cause delays in execution.')
# Assert that all items in target_ids are integers (ex.: to benchmark single-class model with multi-class labels)
if targ_ids:
for item in targ_ids:
if not isinstance(item, int):
raise ValueError(f'\nTarget id "{item}" in target_ids is {type(item)}, expected int.')
logging.info(f'\nInferences will be saved to: {working_folder}\n\n')
if not (0 <= max_used_ram <= 100):
logging.warning(f'\nMax used ram parameter should be a percentage. Got {max_used_ram}. '
f'Will set default value of {default_max_used_ram} %')
max_used_ram = default_max_used_ram
# AWS
bucket = None
bucket_file_cache = []
bucket_name = get_key_def('bucket_name', params['AWS'])
# list of GPU devices that are available and unused. If no GPUs, returns empty dict
gpu_devices_dict = get_device_ids(num_devices,
max_used_ram_perc=max_used_ram,
max_used_perc=max_used_perc)
if gpu_devices_dict:
chunk_size = calc_inference_chunk_size(gpu_devices_dict=gpu_devices_dict, max_pix_per_mb_gpu=50)
logging.info(f"\nNumber of cuda devices requested: {num_devices}. "
f"\nCuda devices available: {gpu_devices_dict}. "
f"\nUsing {list(gpu_devices_dict.keys())[0]}\n\n")
device = torch.device(f'cuda:{list(range(len(gpu_devices_dict.keys())))[0]}')
else:
chunk_size = get_key_def('chunk_size', params['inference'], default=512, expected_type=int)
logging.warning(f"\nNo Cuda device available. This process will only run on CPU")
device = torch.device('cpu')
# CONFIGURE MODEL
num_classes_backgr = add_background_to_num_class(task, num_classes)
model, loaded_checkpoint, model_name = net(model_name=model_name,
num_bands=num_bands,
num_channels=num_classes_backgr,
dontcare_val=dontcare_val,
num_devices=1,
net_params=params,
inference_state_dict=state_dict)
try:
model.to(device)
except RuntimeError:
logging.info(f"\nUnable to use device. Trying device 0")
device = torch.device(f'cuda' if gpu_devices_dict else 'cpu')
model.to(device)
# CREATE LIST OF INPUT IMAGES FOR INFERENCE
try:
# check if the data folder exist
raw_data_dir = get_key_def('raw_data_dir', params['dataset'])
my_data_path = Path(raw_data_dir).resolve(strict=True)
logging.info("\nImage directory used '{}'".format(my_data_path))
data_path = Path(my_data_path)
except FileNotFoundError:
raw_data_dir = get_key_def('raw_data_dir', params['dataset'])
raise logging.critical(
"\nImage directory '{}' doesn't exist, please change the path".format(raw_data_dir)
)
list_img = list_input_images(
img_dir_or_csv, bucket_name, glob_patterns=["*.tif", "*.TIF"], in_case_of_path=str(data_path)
)
# VALIDATION: anticipate problems with imagery and label (if provided) before entering main for loop
valid_gpkg_set = set()
for info in tqdm(list_img, desc='Validating imagery'):
# validate_raster(info['tif'], num_bands, meta_map)
if 'gpkg' in info.keys() and info['gpkg'] and info['gpkg'] not in valid_gpkg_set:
validate_num_classes(vector_file=info['gpkg'],
num_classes=num_classes,
attribute_name=info['attribute_name'],
ignore_index=dontcare,
target_ids=targ_ids)
assert_crs_match(info['tif'], info['gpkg'])
valid_gpkg_set.add(info['gpkg'])
logging.info('\nSuccessfully validated imagery')
if valid_gpkg_set:
logging.info('\nSuccessfully validated label data for benchmarking')
if task == 'classification':
classifier(params, list_img, model, device,
working_folder) # FIXME: why don't we load from checkpoint in classification?
elif task == 'segmentation':
gdf_ = []
gpkg_name_ = []
# TODO: Add verifications?
if bucket:
bucket.download_file(loaded_checkpoint, "saved_model.pth.tar") # TODO: is this still valid?
model, _ = load_from_checkpoint("saved_model.pth.tar", model)
else:
model, _ = load_from_checkpoint(loaded_checkpoint, model)
# Save tracking TODO put option not just mlflow
if 'tracker_uri' in locals() and 'run_name' in locals():
mode = get_key_def('mode', params, expected_type=str)
task = get_key_def('task_name', params['task'], expected_type=str)
run_name = '{}_{}_{}'.format(run_name, mode, task)
# tracking path + parameters logging
set_tracking_uri(tracker_uri)
set_experiment(experiment_name)
start_run(run_name=run_name)
log_params(dict_path(params, 'inference'))
log_params(dict_path(params, 'dataset'))
log_params(dict_path(params, 'model'))
# LOOP THROUGH LIST OF INPUT IMAGES
for info in tqdm(list_img, desc='Inferring from images', position=0, leave=True):
img_name = Path(info['tif']).name
local_gpkg = Path(info['gpkg']) if 'gpkg' in info.keys() and info['gpkg'] else None
gpkg_name = local_gpkg.stem if local_gpkg else None
if bucket:
local_img = f"Images/{img_name}"
bucket.download_file(info['tif'], local_img)
inference_image = f"Classified_Images/{img_name.split('.')[0]}_inference.tif"
if info['meta']:
if info['meta'] not in bucket_file_cache:
bucket_file_cache.append(info['meta'])
bucket.download_file(info['meta'], info['meta'].split('/')[-1])
info['meta'] = info['meta'].split('/')[-1]
else: # FIXME: else statement should support img['meta'] integration as well.
local_img = Path(info['tif'])
Path.mkdir(working_folder.joinpath(local_img.parent.name), parents=True, exist_ok=True)
inference_image = working_folder.joinpath(local_img.parent.name,
f"{img_name.split('.')[0]}_inference.tif")
temp_file = working_folder.joinpath(local_img.parent.name, f"{img_name.split('.')[0]}.dat")
raster = rasterio.open(local_img, 'r')
logging.info(f'\nReading original image: {raster.name}')
inf_meta = raster.meta
label = None
if local_gpkg:
logging.info(f'\nBurning label as raster: {local_gpkg}')
local_img = clip_raster_with_gpkg(raster, local_gpkg)
raster.close()
raster = rasterio.open(local_img, 'r')
logging.info(f'\nReading clipped image: {raster.name}')
inf_meta = raster.meta
label = vector_to_raster(vector_file=local_gpkg,
input_image=raster,
out_shape=(inf_meta['height'], inf_meta['width']),
attribute_name=info['attribute_name'],
fill=0, # background value in rasterized vector.
target_ids=targ_ids)
if debug:
logging.debug(f'\nUnique values in loaded label as raster: {np.unique(label)}\n'
f'Shape of label as raster: {label.shape}')
pred, gdf = segmentation(param=params,
input_image=raster,
label_arr=label,
num_classes=num_classes_backgr,
gpkg_name=gpkg_name,
model=model,
chunk_size=chunk_size,
device=device,
scale=scale,
BGR_to_RGB=BGR_to_RGB,
tp_mem=temp_file,
debug=debug)
if gdf is not None:
gdf_.append(gdf)
gpkg_name_.append(gpkg_name)
if local_gpkg and 'tracker_uri' in locals():
pixelMetrics = ComputePixelMetrics(label, pred, num_classes_backgr)
log_metrics(pixelMetrics.update(pixelMetrics.iou))
log_metrics(pixelMetrics.update(pixelMetrics.dice))
pred = pred[np.newaxis, :, :].astype(np.uint8)
inf_meta.update({"driver": "GTiff",
"height": pred.shape[1],
"width": pred.shape[2],
"count": pred.shape[0],
"dtype": 'uint8',
"compress": 'lzw'})
logging.info(f'\nSuccessfully inferred on {img_name}\nWriting to file: {inference_image}')
with rasterio.open(inference_image, 'w+', **inf_meta) as dest:
dest.write(pred)
del pred
try:
temp_file.unlink()
except OSError as e:
logging.warning(f'File Error: {temp_file, e.strerror}')
if raster_to_vec:
start_vec = time.time()
inference_vec = working_folder.joinpath(local_img.parent.name,
f"{img_name.split('.')[0]}_inference.gpkg")
ras2vec(inference_image, inference_vec)
end_vec = time.time() - start_vec
logging.info('Vectorization completed in {:.0f}m {:.0f}s'.format(end_vec // 60, end_vec % 60))
if len(gdf_) >= 1:
if not len(gdf_) == len(gpkg_name_):
raise logging.critical(ValueError('\nbenchmarking unable to complete'))
all_gdf = pd.concat(gdf_) # Concatenate all geo data frame into one geo data frame
all_gdf.reset_index(drop=True, inplace=True)
gdf_x = gpd.GeoDataFrame(all_gdf)
bench_gpkg = working_folder / "benchmark.gpkg"
gdf_x.to_file(bench_gpkg, driver="GPKG", index=False)
logging.info(f'\nSuccessfully wrote benchmark geopackage to: {bench_gpkg}')
# log_artifact(working_folder)
def main(params, config_path):
"""
Function to train and validate a models for semantic segmentation or classification.
:param params: (dict) Parameters found in the yaml config file.
:param config_path: (str) Path to the yaml config file.
"""
debug = get_key_def('debug_mode', params['global'], False)
if debug:
warnings.warn(
f'Debug mode activated. Some debug functions may cause delays in execution.'
)
now = datetime.datetime.now().strftime("%Y-%m-%d_%H-%M")
num_classes = params['global']['num_classes']
task = params['global']['task']
batch_size = params['training']['batch_size']
assert task == 'classification', f"The task should be classification. The provided value is {task}"
# INSTANTIATE MODEL AND LOAD CHECKPOINT FROM PATH
model, checkpoint, model_name = net(
params, num_classes) # pretrained could become a yaml parameter.
tqdm.write(
f'Instantiated {model_name} model with {num_classes} output channels.\n'
)
bucket_name = params['global']['bucket_name']
data_path = params['global']['data_path']
modelname = config_path.stem
output_path = Path(data_path).joinpath('model') / modelname
if output_path.is_dir():
output_path = Path(str(output_path) + '_' + now)
output_path.mkdir(parents=True, exist_ok=False)
shutil.copy(str(config_path), str(output_path))
tqdm.write(f'Model and log files will be saved to: {output_path}\n\n')
if bucket_name:
bucket, bucket_output_path, output_path, data_path = download_s3_files(
bucket_name=bucket_name,
data_path=data_path,
output_path=output_path,
num_classes=num_classes)
elif not bucket_name:
get_local_classes(num_classes, data_path, output_path)
since = time.time()
best_loss = 999
progress_log = Path(output_path) / 'progress.log'
if not progress_log.exists():
progress_log.open('w', buffering=1).write(
tsv_line('ep_idx', 'phase', 'iter', 'i_p_ep',
'time')) # Add header
trn_log = InformationLogger('trn')
val_log = InformationLogger('val')
tst_log = InformationLogger('tst')
num_devices = params['global']['num_gpus']
assert num_devices is not None and num_devices >= 0, "missing mandatory num gpus parameter"
# list of GPU devices that are available and unused. If no GPUs, returns empty list
lst_device_ids = get_device_ids(
num_devices) if torch.cuda.is_available() else []
num_devices = len(lst_device_ids) if lst_device_ids else 0
device = torch.device(f'cuda:{lst_device_ids[0]}' if torch.cuda.
is_available() and lst_device_ids else 'cpu')
print(
f"Number of cuda devices requested: {params['global']['num_gpus']}. Cuda devices available: {lst_device_ids}\n"
)
if num_devices == 1:
print(f"Using Cuda device {lst_device_ids[0]}\n")
elif num_devices > 1:
print(
f"Using data parallel on devices: {str(lst_device_ids)[1:-1]}. Main device: {lst_device_ids[0]}\n"
) # TODO: why are we showing indices [1:-1] for lst_device_ids?
try: # TODO: For HPC when device 0 not available. Error: Invalid device id (in torch/cuda/__init__.py).
model = nn.DataParallel(
model, device_ids=lst_device_ids
) # DataParallel adds prefix 'module.' to state_dict keys
except AssertionError:
warnings.warn(
f"Unable to use devices {lst_device_ids}. Trying devices {list(range(len(lst_device_ids)))}"
)
device = torch.device('cuda:0')
lst_device_ids = range(len(lst_device_ids))
model = nn.DataParallel(
model, device_ids=lst_device_ids
) # DataParallel adds prefix 'module.' to state_dict keys
else:
warnings.warn(
f"No Cuda device available. This process will only run on CPU\n")
tqdm.write(f'Creating dataloaders from data in {Path(data_path)}...\n')
trn_dataloader, val_dataloader, tst_dataloader = create_classif_dataloader(
data_path=data_path,
batch_size=batch_size,
num_devices=num_devices,
)
tqdm.write(
f'Setting model, criterion, optimizer and learning rate scheduler...\n'
)
model, criterion, optimizer, lr_scheduler = set_hyperparameters(
params, num_classes, model, checkpoint)
criterion = criterion.to(device)
try: # For HPC when device 0 not available. Error: Cuda invalid device ordinal.
model.to(device)
except RuntimeError:
warnings.warn(f"Unable to use device. Trying device 0...\n")
device = torch.device(f'cuda:0' if torch.cuda.is_available()
and lst_device_ids else 'cpu')
model.to(device)
filename = os.path.join(output_path, 'checkpoint.pth.tar')
for epoch in range(0, params['training']['num_epochs']):
print(
f'\nEpoch {epoch}/{params["training"]["num_epochs"] - 1}\n{"-" * 20}'
)
trn_report = train(train_loader=trn_dataloader,
model=model,
criterion=criterion,
optimizer=optimizer,
scheduler=lr_scheduler,
num_classes=num_classes,
batch_size=batch_size,
ep_idx=epoch,
progress_log=progress_log,
device=device,
debug=debug)
trn_log.add_values(trn_report,
epoch,
ignore=['precision', 'recall', 'fscore', 'iou'])
val_report = evaluation(
eval_loader=val_dataloader,
model=model,
criterion=criterion,
num_classes=num_classes,
batch_size=batch_size,
ep_idx=epoch,
progress_log=progress_log,
batch_metrics=params['training']['batch_metrics'],
dataset='val',
device=device,
debug=debug)
val_loss = val_report['loss'].avg
if params['training']['batch_metrics'] is not None:
val_log.add_values(val_report, epoch, ignore=['iou'])
else:
val_log.add_values(val_report,
epoch,
ignore=['precision', 'recall', 'fscore', 'iou'])
if val_loss < best_loss:
tqdm.write("save checkpoint\n")
best_loss = val_loss
# More info: https://pytorch.org/tutorials/beginner/saving_loading_models.html#saving-torch-nn-dataparallel-models
state_dict = model.module.state_dict(
) if num_devices > 1 else model.state_dict()
torch.save(
{
'epoch': epoch,
'arch': model_name,
'model': state_dict,
'best_loss': best_loss,
'optimizer': optimizer.state_dict()
}, filename)
if bucket_name:
bucket_filename = os.path.join(bucket_output_path,
'checkpoint.pth.tar')
bucket.upload_file(filename, bucket_filename)
if bucket_name:
save_logs_to_bucket(bucket, bucket_output_path, output_path, now,
params['training']['batch_metrics'])
cur_elapsed = time.time() - since
print(
f'Current elapsed time {cur_elapsed // 60:.0f}m {cur_elapsed % 60:.0f}s'
)
# load checkpoint model and evaluate it on test dataset.
if int(
params['training']['num_epochs']
) > 0: # if num_epochs is set to 0, model is loaded to evaluate on test set
checkpoint = load_checkpoint(filename)
model, _ = load_from_checkpoint(checkpoint, model)
if tst_dataloader:
tst_report = evaluation(
eval_loader=tst_dataloader,
model=model,
criterion=criterion,
num_classes=num_classes,
batch_size=batch_size,
ep_idx=params['training']['num_epochs'],
progress_log=progress_log,
batch_metrics=params['training']['batch_metrics'],
dataset='tst',
device=device)
tst_log.add_values(tst_report,
params['training']['num_epochs'],
ignore=['iou'])
if bucket_name:
bucket_filename = os.path.join(bucket_output_path,
'last_epoch.pth.tar')
bucket.upload_file(
"output.txt",
os.path.join(bucket_output_path, f"Logs/{now}_output.txt"))
bucket.upload_file(filename, bucket_filename)
time_elapsed = time.time() - since
print('Training complete in {:.0f}m {:.0f}s'.format(
time_elapsed // 60, time_elapsed % 60))
def main(params, config_path):
"""
Function to train and validate a models for semantic segmentation or classification.
:param params: (dict) Parameters found in the yaml config file.
:param config_path: (str) Path to the yaml config file.
"""
# MANDATORY PARAMETERS
num_classes = get_key_def('num_classes', params['global'], expected_type=int)
num_bands = get_key_def('number_of_bands', params['global'], expected_type=int)
batch_size = get_key_def('batch_size', params['training'], expected_type=int)
num_epochs = get_key_def('num_epochs', params['training'], expected_type=int)
model_name = get_key_def('model_name', params['global'], expected_type=str).lower()
BGR_to_RGB = get_key_def('BGR_to_RGB', params['global'], expected_type=bool)
# parameters to find hdf5 samples
data_path = Path(get_key_def('data_path', params['global'], './data', expected_type=str))
assert data_path.is_dir(), f'Could not locate data path {data_path}'
# OPTIONAL PARAMETERS
# basics
debug = get_key_def('debug_mode', params['global'], default=False, expected_type=bool)
task = get_key_def('task', params['global'], default='classification', expected_type=str)
assert task == 'classification', f"The task should be classification. The provided value is {task}"
dontcare_val = get_key_def("ignore_index", params["training"], default=-1, expected_type=int)
batch_metrics = get_key_def('batch_metrics', params['training'], default=1, expected_type=int)
meta_map = get_key_def("meta_map", params["global"], default={})
bucket_name = get_key_def('bucket_name', params['global']) # AWS
# model params
loss_fn = get_key_def('loss_fn', params['training'], default='CrossEntropy', expected_type=str)
optimizer = get_key_def('optimizer', params['training'], default='adam', expected_type=str)
pretrained = get_key_def('pretrained', params['training'], default=True, expected_type=bool)
train_state_dict_path = get_key_def('state_dict_path', params['training'], default=None, expected_type=str)
dropout_prob = get_key_def('dropout_prob', params['training'], default=None, expected_type=float)
# gpu parameters
num_devices = get_key_def('num_gpus', params['global'], default=0, expected_type=int)
max_used_ram = get_key_def('max_used_ram', params['global'], default=2000, expected_type=int)
max_used_perc = get_key_def('max_used_perc', params['global'], default=15, expected_type=int)
# automatic model naming with unique id for each training
model_id = config_path.stem
output_path = data_path.joinpath('model') / model_id
if output_path.is_dir():
last_mod_time_suffix = datetime.fromtimestamp(output_path.stat().st_mtime).strftime('%Y%m%d-%H%M%S')
archive_output_path = data_path.joinpath('model') / f"{model_id}_{last_mod_time_suffix}"
shutil.move(output_path, archive_output_path)
output_path.mkdir(parents=True, exist_ok=False)
shutil.copy(str(config_path), str(output_path)) # copy yaml to output path where model will be saved
tqdm.write(f'Model and log files will be saved to: {output_path}\n\n')
if debug:
warnings.warn(f'Debug mode activated. Some debug functions may cause delays in execution.')
if bucket_name:
bucket, bucket_output_path, output_path, data_path = download_s3_files(bucket_name=bucket_name,
data_path=data_path,
output_path=output_path,
num_classes=num_classes)
elif not bucket_name:
get_local_classes(num_classes, data_path, output_path)
since = time.time()
now = datetime.now().strftime("%Y-%m-%d_%H-%M")
best_loss = 999
progress_log = Path(output_path) / 'progress.log'
if not progress_log.exists():
progress_log.open('w', buffering=1).write(tsv_line('ep_idx', 'phase', 'iter', 'i_p_ep', 'time')) # Add header
trn_log = InformationLogger('trn')
val_log = InformationLogger('val')
tst_log = InformationLogger('tst')
# list of GPU devices that are available and unused. If no GPUs, returns empty list
gpu_devices_dict = get_device_ids(num_devices,
max_used_ram_perc=max_used_ram,
max_used_perc=max_used_perc)
num_devices = len(gpu_devices_dict.keys())
device = torch.device(f'cuda:0' if gpu_devices_dict else 'cpu')
tqdm.write(f'Creating dataloaders from data in {Path(data_path)}...\n')
trn_dataloader, val_dataloader, tst_dataloader = create_classif_dataloader(data_path=data_path,
batch_size=batch_size,
num_devices=num_devices,)
# INSTANTIATE MODEL AND LOAD CHECKPOINT FROM PATH
model, model_name, criterion, optimizer, lr_scheduler = net(model_name=model_name,
num_bands=num_bands,
num_channels=num_classes,
dontcare_val=dontcare_val,
num_devices=num_devices,
train_state_dict_path=train_state_dict_path,
pretrained=pretrained,
dropout_prob=dropout_prob,
loss_fn=loss_fn,
optimizer=optimizer,
net_params=params)
tqdm.write(f'Instantiated {model_name} model with {num_classes} output channels.\n')
filename = os.path.join(output_path, 'checkpoint.pth.tar')
for epoch in range(0, params['training']['num_epochs']):
logging.info(f'\nEpoch {epoch}/{params["training"]["num_epochs"] - 1}\n{"-" * 20}')
trn_report = train(train_loader=trn_dataloader,
model=model,
criterion=criterion,
optimizer=optimizer,
scheduler=lr_scheduler,
num_classes=num_classes,
batch_size=batch_size,
ep_idx=epoch,
progress_log=progress_log,
device=device,
debug=debug)
trn_log.add_values(trn_report, epoch, ignore=['precision', 'recall', 'fscore', 'iou'])
val_report = evaluation(eval_loader=val_dataloader,
model=model,
criterion=criterion,
num_classes=num_classes,
batch_size=batch_size,
ep_idx=epoch,
progress_log=progress_log,
batch_metrics=params['training']['batch_metrics'],
dataset='val',
device=device,
debug=debug)
val_loss = val_report['loss'].avg
if params['training']['batch_metrics'] is not None:
val_log.add_values(val_report, epoch, ignore=['iou'])
else:
val_log.add_values(val_report, epoch, ignore=['precision', 'recall', 'fscore', 'iou'])
if val_loss < best_loss:
tqdm.write("save checkpoint\n")
best_loss = val_loss
# More info: https://pytorch.org/tutorials/beginner/saving_loading_models.html#saving-torch-nn-dataparallel-models
state_dict = model.module.state_dict() if num_devices > 1 else model.state_dict()
torch.save({'epoch': epoch,
'params': params,
'model': state_dict,
'best_loss': best_loss,
'optimizer': optimizer.state_dict()}, filename)
if bucket_name:
bucket_filename = os.path.join(bucket_output_path, 'checkpoint.pth.tar')
bucket.upload_file(filename, bucket_filename)
if bucket_name:
save_logs_to_bucket(bucket, bucket_output_path, output_path, batch_metrics)
cur_elapsed = time.time() - since
logging.info(f'Current elapsed time {cur_elapsed // 60:.0f}m {cur_elapsed % 60:.0f}s')
# load checkpoint model and evaluate it on test dataset.
if int(params['training']['num_epochs']) > 0: # if num_epochs is set to 0, model is loaded to evaluate on test set
checkpoint = load_checkpoint(filename)
model, _ = load_from_checkpoint(checkpoint, model)
if tst_dataloader:
tst_report = evaluation(eval_loader=tst_dataloader,
model=model,
criterion=criterion,
num_classes=num_classes,
batch_size=batch_size,
ep_idx=num_epochs,
progress_log=progress_log,
batch_metrics=batch_metrics,
dataset='tst',
device=device)
tst_log.add_values(tst_report, num_epochs, ignore=['iou'])
if bucket_name:
bucket_filename = os.path.join(bucket_output_path, 'last_epoch.pth.tar')
bucket.upload_file("output.txt", os.path.join(bucket_output_path, f"Logs/{now}_output.txt"))
bucket.upload_file(filename, bucket_filename)
time_elapsed = time.time() - since
logging.info('Training complete in {:.0f}m {:.0f}s'.format(time_elapsed // 60, time_elapsed % 60))
def main(params, config_path):
"""
Function to train and validate a model for semantic segmentation.
Process
-------
1. Model is instantiated and checkpoint is loaded from path, if provided in
`your_config.yaml`.
2. GPUs are requested according to desired amount of `num_gpus` and
available GPUs.
3. If more than 1 GPU is requested, model is cast to DataParallel model
4. Dataloaders are created with `create_dataloader()`
5. Loss criterion, optimizer and learning rate are set with
`set_hyperparameters()` as requested in `config.yaml`.
5. Using these hyperparameters, the application will try to minimize the
loss on the training data and evaluate every epoch on the validation
data.
6. For every epoch, the application shows and logs the loss on "trn" and
"val" datasets.
7. For every epoch (if `batch_metrics: 1`), the application shows and logs
the accuracy, recall and f-score on "val" dataset. Those metrics are
also computed on each class.
8. At the end of the training process, the application shows and logs the
accuracy, recall and f-score on "tst" dataset. Those metrics are also
computed on each class.
-------
:param params: (dict) Parameters found in the yaml config file.
:param config_path: (str) Path to the yaml config file.
"""
params['global']['git_hash'] = get_git_hash()
debug = get_key_def('debug_mode', params['global'], False)
if debug:
warnings.warn(
f'Debug mode activated. Some debug features may mobilize extra disk space and cause delays in execution.'
)
now = datetime.datetime.now().strftime("%Y-%m-%d_%H-%M")
num_classes = params['global']['num_classes']
task = params['global']['task']
assert task == 'segmentation', f"The task should be segmentation. The provided value is {task}"
num_classes_corrected = num_classes + 1 # + 1 for background # FIXME temporary patch for num_classes problem.
data_path = Path(params['global']['data_path'])
assert data_path.is_dir(), f'Could not locate data path {data_path}'
samples_size = params["global"]["samples_size"]
overlap = params["sample"]["overlap"]
min_annot_perc = get_key_def('min_annotated_percent',
params['sample']['sampling_method'],
0,
expected_type=int)
num_bands = params['global']['number_of_bands']
samples_folder_name = f'samples{samples_size}_overlap{overlap}_min-annot{min_annot_perc}_{num_bands}bands' # FIXME: won't check if folder has datetime suffix (if multiple folders)
samples_folder = data_path.joinpath(samples_folder_name)
batch_size = params['training']['batch_size']
num_devices = params['global']['num_gpus']
# list of GPU devices that are available and unused. If no GPUs, returns empty list
lst_device_ids = get_device_ids(
num_devices) if torch.cuda.is_available() else []
num_devices = len(lst_device_ids) if lst_device_ids else 0
device = torch.device(f'cuda:{lst_device_ids[0]}' if torch.cuda.
is_available() and lst_device_ids else 'cpu')
tqdm.write(f'Creating dataloaders from data in {samples_folder}...\n')
trn_dataloader, val_dataloader, tst_dataloader = create_dataloader(
samples_folder=samples_folder,
batch_size=batch_size,
num_devices=num_devices,
params=params)
# INSTANTIATE MODEL AND LOAD CHECKPOINT FROM PATH
model, model_name, criterion, optimizer, lr_scheduler = net(
params,
num_classes_corrected) # pretrained could become a yaml parameter.
tqdm.write(
f'Instantiated {model_name} model with {num_classes_corrected} output channels.\n'
)
bucket_name = get_key_def('bucket_name', params['global'])
# mlflow tracking path + parameters logging
set_tracking_uri(
get_key_def('mlflow_uri', params['global'], default="./mlruns"))
set_experiment('gdl-training')
log_params(params['training'])
log_params(params['global'])
log_params(params['sample'])
modelname = config_path.stem
output_path = samples_folder.joinpath('model') / modelname
if output_path.is_dir():
output_path = output_path.joinpath(f"_{now}")
output_path.mkdir(parents=True, exist_ok=False)
shutil.copy(str(config_path), str(output_path))
tqdm.write(f'Model and log files will be saved to: {output_path}\n\n')
if bucket_name:
from utils.aws import download_s3_files
bucket, bucket_output_path, output_path, data_path = download_s3_files(
bucket_name=bucket_name,
data_path=data_path,
output_path=output_path)
since = time.time()
best_loss = 999
last_vis_epoch = 0
progress_log = output_path / 'progress.log'
if not progress_log.exists():
progress_log.open('w', buffering=1).write(
tsv_line('ep_idx', 'phase', 'iter', 'i_p_ep',
'time')) # Add header
trn_log = InformationLogger('trn')
val_log = InformationLogger('val')
tst_log = InformationLogger('tst')
filename = output_path.joinpath('checkpoint.pth.tar')
# VISUALIZATION: generate pngs of inputs, labels and outputs
vis_batch_range = get_key_def('vis_batch_range', params['visualization'],
None)
if vis_batch_range is not None:
# Make sure user-provided range is a tuple with 3 integers (start, finish, increment). Check once for all visualization tasks.
assert isinstance(vis_batch_range,
list) and len(vis_batch_range) == 3 and all(
isinstance(x, int) for x in vis_batch_range)
vis_at_init_dataset = get_key_def('vis_at_init_dataset',
params['visualization'], 'val')
# Visualization at initialization. Visualize batch range before first eopch.
if get_key_def('vis_at_init', params['visualization'], False):
tqdm.write(
f'Visualizing initialized model on batch range {vis_batch_range} from {vis_at_init_dataset} dataset...\n'
)
vis_from_dataloader(
params=params,
eval_loader=val_dataloader
if vis_at_init_dataset == 'val' else tst_dataloader,
model=model,
ep_num=0,
output_path=output_path,
dataset=vis_at_init_dataset,
device=device,
vis_batch_range=vis_batch_range)
for epoch in range(0, params['training']['num_epochs']):
print(
f'\nEpoch {epoch}/{params["training"]["num_epochs"] - 1}\n{"-" * 20}'
)
trn_report = train(train_loader=trn_dataloader,
model=model,
criterion=criterion,
optimizer=optimizer,
scheduler=lr_scheduler,
num_classes=num_classes_corrected,
batch_size=batch_size,
ep_idx=epoch,
progress_log=progress_log,
vis_params=params,
device=device,
debug=debug)
trn_log.add_values(trn_report,
epoch,
ignore=['precision', 'recall', 'fscore', 'iou'])
val_report = evaluation(
eval_loader=val_dataloader,
model=model,
criterion=criterion,
num_classes=num_classes_corrected,
batch_size=batch_size,
ep_idx=epoch,
progress_log=progress_log,
vis_params=params,
batch_metrics=params['training']['batch_metrics'],
dataset='val',
device=device,
debug=debug)
val_loss = val_report['loss'].avg
if params['training']['batch_metrics'] is not None:
val_log.add_values(val_report, epoch)
else:
val_log.add_values(val_report,
epoch,
ignore=['precision', 'recall', 'fscore', 'iou'])
if val_loss < best_loss:
tqdm.write("save checkpoint\n")
best_loss = val_loss
# More info: https://pytorch.org/tutorials/beginner/saving_loading_models.html#saving-torch-nn-dataparallel-models
state_dict = model.module.state_dict(
) if num_devices > 1 else model.state_dict()
torch.save(
{
'epoch': epoch,
'params': params,
'model': state_dict,
'best_loss': best_loss,
'optimizer': optimizer.state_dict()
}, filename)
if epoch == 0:
log_artifact(filename)
if bucket_name:
bucket_filename = bucket_output_path.joinpath(
'checkpoint.pth.tar')
bucket.upload_file(filename, bucket_filename)
# VISUALIZATION: generate png of test samples, labels and outputs for visualisation to follow training performance
vis_at_checkpoint = get_key_def('vis_at_checkpoint',
params['visualization'], False)
ep_vis_min_thresh = get_key_def('vis_at_ckpt_min_ep_diff',
params['visualization'], 4)
vis_at_ckpt_dataset = get_key_def('vis_at_ckpt_dataset',
params['visualization'], 'val')
if vis_batch_range is not None and vis_at_checkpoint and epoch - last_vis_epoch >= ep_vis_min_thresh:
if last_vis_epoch == 0:
tqdm.write(
f'Visualizing with {vis_at_ckpt_dataset} dataset samples on checkpointed model for'
f'batches in range {vis_batch_range}')
vis_from_dataloader(
params=params,
eval_loader=val_dataloader
if vis_at_ckpt_dataset == 'val' else tst_dataloader,
model=model,
ep_num=epoch + 1,
output_path=output_path,
dataset=vis_at_ckpt_dataset,
device=device,
vis_batch_range=vis_batch_range)
last_vis_epoch = epoch
if bucket_name:
save_logs_to_bucket(bucket, bucket_output_path, output_path, now,
params['training']['batch_metrics'])
cur_elapsed = time.time() - since
print(
f'Current elapsed time {cur_elapsed // 60:.0f}m {cur_elapsed % 60:.0f}s'
)
# load checkpoint model and evaluate it on test dataset.
if int(
params['training']['num_epochs']
) > 0: # if num_epochs is set to 0, model is loaded to evaluate on test set
checkpoint = load_checkpoint(filename)
model, _ = load_from_checkpoint(checkpoint, model)
if tst_dataloader:
tst_report = evaluation(
eval_loader=tst_dataloader,
model=model,
criterion=criterion,
num_classes=num_classes_corrected,
batch_size=batch_size,
ep_idx=params['training']['num_epochs'],
progress_log=progress_log,
vis_params=params,
batch_metrics=params['training']['batch_metrics'],
dataset='tst',
device=device)
tst_log.add_values(tst_report, params['training']['num_epochs'])
if bucket_name:
bucket_filename = bucket_output_path.joinpath('last_epoch.pth.tar')
bucket.upload_file(
"output.txt",
bucket_output_path.joinpath(f"Logs/{now}_output.txt"))
bucket.upload_file(filename, bucket_filename)
time_elapsed = time.time() - since
print('Training complete in {:.0f}m {:.0f}s'.format(
time_elapsed // 60, time_elapsed % 60))
def main(params):
"""
Identify the class to which each image belongs.
:param params: (dict) Parameters found in the yaml config file.
"""
since = time.time()
csv_file = params['inference']['img_csv_file']
bucket = None
bucket_name = params['global']['bucket_name']
model, state_dict_path, model_name = net(params, inference=True)
num_devices = params['global']['num_gpus'] if params['global'][
'num_gpus'] else 0
# list of GPU devices that are available and unused. If no GPUs, returns empty list
lst_device_ids = get_device_ids(
num_devices) if torch.cuda.is_available() else []
device = torch.device(f'cuda:{lst_device_ids[0]}' if torch.cuda.
is_available() and lst_device_ids else 'cpu')
if lst_device_ids:
print(f"Using Cuda device {lst_device_ids[0]}")
else:
warnings.warn(
f"No Cuda device available. This process will only run on CPU")
model.to(device)
if bucket_name:
s3 = boto3.resource('s3')
bucket = s3.Bucket(bucket_name)
bucket.download_file(csv_file, 'img_csv_file.csv')
list_img = read_csv('img_csv_file.csv', inference=True)
else:
list_img = read_csv(csv_file, inference=True)
if params['global']['task'] == 'classification':
classifier(params, list_img, model)
elif params['global']['task'] == 'segmentation':
if bucket:
bucket.download_file(state_dict_path, "saved_model.pth.tar")
model = load_from_checkpoint("saved_model.pth.tar", model)
else:
model = load_from_checkpoint(state_dict_path, model)
chunk_size, nbr_pix_overlap = calc_overlap(params)
num_classes = params['global']['num_classes']
for img in tqdm(list_img, desc='image list', position=0):
img_name = os.path.basename(img['tif'])
if bucket:
local_img = f"Images/{img_name}"
bucket.download_file(img['tif'], local_img)
inference_image = f"Classified_Images/{img_name.split('.')[0]}_inference.tif"
else:
local_img = img['tif']
inference_image = os.path.join(
params['inference']['working_folder'],
f"{img_name.split('.')[0]}_inference.tif")
assert_band_number(local_img, params['global']['number_of_bands'])
nd_array_tif = image_reader_as_array(local_img)
# See: http://cs231n.github.io/neural-networks-2/#datapre
# e.g. Scale arrays from [0,255] to [0,1]
scale = params['global']['scale_data'] if params['global'][
'scale_data'] else True
if scale:
sc_min, sc_max = params['global']['scale_data']
nd_array_tif = minmax_scale(nd_array_tif,
orig_range=(np.min(nd_array_tif),
np.max(nd_array_tif)),
scale_range=(sc_min, sc_max))
sem_seg_results = sem_seg_inference(model, nd_array_tif,
nbr_pix_overlap, chunk_size,
num_classes, device)
create_new_raster_from_base(local_img, inference_image,
sem_seg_results)
tqdm.write(f"Semantic segmentation of image {img_name} completed")
if bucket:
bucket.upload_file(
inference_image,
os.path.join(params['inference']['working_folder'],
f"{img_name.split('.')[0]}_inference.tif"))
else:
raise ValueError(
f"The task should be either classification or segmentation. The provided value is {params['global']['task']}"
)
time_elapsed = time.time() - since
print('Inference completed in {:.0f}m {:.0f}s'.format(
time_elapsed // 60, time_elapsed % 60))
def main(params: dict):
"""
Identify the class to which each image belongs.
:param params: (dict) Parameters found in the yaml config file.
"""
# SET BASIC VARIABLES AND PATHS
since = time.time()
task = params['global']['task']
img_dir_or_csv = params['inference']['img_dir_or_csv_file']
chunk_size = get_key_def('chunk_size', params['inference'], 512)
prediction_with_smoothing = get_key_def('smooth_prediction',
params['inference'], False)
overlap = get_key_def('overlap', params['inference'], 2)
num_classes = params['global']['num_classes']
num_classes_corrected = add_background_to_num_class(task, num_classes)
num_bands = params['global']['number_of_bands']
working_folder = Path(
params['inference']['state_dict_path']).parent.joinpath(
f'inference_{num_bands}bands')
num_devices = params['global']['num_gpus'] if params['global'][
'num_gpus'] else 0
Path.mkdir(working_folder, parents=True, exist_ok=True)
print(f'Inferences will be saved to: {working_folder}\n\n')
bucket = None
bucket_file_cache = []
bucket_name = get_key_def('bucket_name', params['global'])
# list of GPU devices that are available and unused. If no GPUs, returns empty list
lst_device_ids = get_device_ids(
num_devices) if torch.cuda.is_available() else []
device = torch.device(f'cuda:{lst_device_ids[0]}' if torch.cuda.
is_available() and lst_device_ids else 'cpu')
if lst_device_ids:
print(
f"Number of cuda devices requested: {num_devices}. Cuda devices available: {lst_device_ids}. Using {lst_device_ids[0]}\n\n"
)
else:
warnings.warn(
f"No Cuda device available. This process will only run on CPU")
# CONFIGURE MODEL
model, state_dict_path, model_name = net(
params, num_channels=num_classes_corrected, inference=True)
try:
model.to(device)
except RuntimeError:
print(f"Unable to use device. Trying device 0")
device = torch.device(f'cuda:0' if torch.cuda.is_available()
and lst_device_ids else 'cpu')
model.to(device)
# mlflow tracking path + parameters logging
set_tracking_uri(
get_key_def('mlflow_uri', params['global'], default="./mlruns"))
set_experiment('gdl-benchmarking/' + working_folder.name)
log_params(params['global'])
log_params(params['inference'])
# CREATE LIST OF INPUT IMAGES FOR INFERENCE
list_img = list_input_images(img_dir_or_csv,
bucket_name,
glob_patterns=["*.tif", "*.TIF"])
if task == 'classification':
# FIXME: why don't we load from checkpoint in classification?
classifier(params, list_img, model, device, working_folder)
elif task == 'segmentation':
# TODO: Add verifications?
if bucket:
bucket.download_file(
state_dict_path,
"saved_model.pth.tar") # TODO: is this still valid?
model, _ = load_from_checkpoint("saved_model.pth.tar", model)
else:
model, _ = load_from_checkpoint(state_dict_path, model)
# LOOP THROUGH LIST OF INPUT IMAGES
with tqdm(list_img, desc='image list', position=0) as _tqdm:
for info in _tqdm:
img_name = Path(info['tif']).name
local_gpkg = info['gpkg']
if local_gpkg:
local_gpkg = Path(local_gpkg)
if bucket:
local_img = f"Images/{img_name}"
bucket.download_file(info['tif'], local_img)
inference_image = f"Classified_Images/{img_name.split('.')[0]}_inference.tif"
if info['meta']:
if info['meta'] not in bucket_file_cache:
bucket_file_cache.append(info['meta'])
bucket.download_file(info['meta'],
info['meta'].split('/')[-1])
info['meta'] = info['meta'].split('/')[-1]
else: # FIXME: else statement should support img['meta'] integration as well.
local_img = Path(info['tif'])
inference_image = working_folder.joinpath(
f"{img_name.split('.')[0]}_inference.tif")
print(inference_image)
assert local_img.is_file(
), f"Could not locate raster file at {local_img}"
with rasterio.open(local_img, 'r') as raster:
inf_meta = raster.meta
if prediction_with_smoothing:
print('Smoothening Predictions with 2D interpolation')
pred = segmentation_with_smoothing(
raster, local_gpkg, model, chunk_size, overlap,
num_bands, device)
else:
pred = segmentation(raster, local_gpkg, model,
chunk_size, num_bands, device)
if local_gpkg:
assert local_gpkg.is_file(
), f"Could not locate gkpg file at {local_gpkg}"
label = vector_to_raster(
vector_file=local_gpkg,
input_image=raster,
out_shape=pred.shape[:2],
attribute_name=info['attribute_name'],
fill=0) # background value in rasterized vector.
with start_run(run_name=img_name, nested=True):
pixelMetrics = ComputePixelMetrics(
label, pred, num_classes_corrected)
log_metrics(
pixelMetrics.update(pixelMetrics.jaccard))
log_metrics(pixelMetrics.update(pixelMetrics.dice))
log_metrics(
pixelMetrics.update(pixelMetrics.accuracy))
log_metrics(
pixelMetrics.update(pixelMetrics.precision))
log_metrics(
pixelMetrics.update(pixelMetrics.recall))
log_metrics(
pixelMetrics.update(pixelMetrics.matthews))
label_classes = np.unique(label)
assert len(colors) >= len(
label_classes
), f'Not enough colors and class names for number of classes in output'
# FIXME: color mapping scheme is hardcoded for now because of memory constraint; To be fixed.
label_rgb = ind2rgb(label, colors)
pred_rgb = ind2rgb(pred, colors)
Image.fromarray((label_rgb).astype(np.uint8),
mode='RGB').save(
os.path.join(
working_folder, 'label_rgb_' +
inference_image.stem + '.png'))
Image.fromarray((pred_rgb).astype(np.uint8),
mode='RGB').save(
os.path.join(
working_folder, 'pred_rgb_' +
inference_image.stem + '.png'))
del label_rgb, pred_rgb
pred = pred[np.newaxis, :, :]
inf_meta.update({
"driver": "GTiff",
"height": pred.shape[1],
"width": pred.shape[2],
"count": pred.shape[0],
"dtype": 'uint8'
})
with rasterio.open(inference_image, 'w+',
**inf_meta) as dest:
dest.write(pred)
log_artifact(working_folder)
time_elapsed = time.time() - since
print('Inference and Benchmarking completed in {:.0f}m {:.0f}s'.format(
time_elapsed // 60, time_elapsed % 60))
def main(params):
"""
Identify the class to which each image belongs.
:param params: (dict) Parameters found in the yaml config file.
"""
since = time.time()
img_dir_or_csv = params['inference']['img_dir_or_csv_file']
working_folder = Path(params['inference']['working_folder'])
Path.mkdir(working_folder, exist_ok=True)
print(f'Inferences will be saved to: {working_folder}')
bucket = None
bucket_file_cache = []
bucket_name = params['global']['bucket_name']
model, state_dict_path, model_name = net(params, inference=True)
num_devices = params['global']['num_gpus'] if params['global'][
'num_gpus'] else 0
# list of GPU devices that are available and unused. If no GPUs, returns empty list
lst_device_ids = get_device_ids(
num_devices) if torch.cuda.is_available() else []
device = torch.device(f'cuda:{lst_device_ids[0]}' if torch.cuda.
is_available() and lst_device_ids else 'cpu')
if lst_device_ids:
print(f"Using Cuda device {lst_device_ids[0]}")
else:
warnings.warn(
f"No Cuda device available. This process will only run on CPU")
model.to(device)
if bucket_name:
s3 = boto3.resource('s3')
bucket = s3.Bucket(bucket_name)
if img_dir_or_csv.endswith('.csv'):
bucket.download_file(img_dir_or_csv, 'img_csv_file.csv')
list_img = read_csv('img_csv_file.csv', inference=True)
else:
raise NotImplementedError(
'Specify a csv file containing images for inference. Directory input not implemented yet'
)
else:
if img_dir_or_csv.endswith('.csv'):
list_img = read_csv(img_dir_or_csv, inference=True)
else:
img_dir = Path(img_dir_or_csv)
assert img_dir.exists(
), f'Could not find directory "{img_dir_or_csv}"'
list_img_paths = sorted(img_dir.glob('*.tif'))
list_img = []
for img_path in list_img_paths:
img = {}
img['tif'] = img_path
list_img.append(img)
assert len(
list_img) >= 0, f'No .tif files found in {img_dir_or_csv}'
if params['global']['task'] == 'classification':
classifier(params, list_img, model, device)
elif params['global']['task'] == 'segmentation':
if bucket:
bucket.download_file(state_dict_path, "saved_model.pth.tar")
model, _ = load_from_checkpoint("saved_model.pth.tar", model)
else:
model, _ = load_from_checkpoint(state_dict_path, model)
chunk_size, nbr_pix_overlap = calc_overlap(params)
num_classes = params['global']['num_classes']
if num_classes == 1:
# assume background is implicitly needed (makes no sense to predict with one class otherwise)
# this will trigger some warnings elsewhere, but should succeed nonetheless
num_classes = 2
with tqdm(list_img, desc='image list', position=0) as _tqdm:
for img in _tqdm:
img_name = os.path.basename(img['tif'])
if bucket:
local_img = f"Images/{img_name}"
bucket.download_file(img['tif'], local_img)
inference_image = f"Classified_Images/{img_name.split('.')[0]}_inference.tif"
if img['meta']:
if img['meta'] not in bucket_file_cache:
bucket_file_cache.append(img['meta'])
bucket.download_file(img['meta'],
img['meta'].split('/')[-1])
img['meta'] = img['meta'].split('/')[-1]
else:
local_img = img['tif']
inference_image = os.path.join(
params['inference']['working_folder'],
f"{img_name.split('.')[0]}_inference.tif")
assert os.path.isfile(
local_img), f"could not open raster file at {local_img}"
with rasterio.open(local_img, 'r') as raster:
np_input_image = image_reader_as_array(
input_image=raster,
scale=get_key_def('scale_data', params['global'],
None),
aux_vector_file=get_key_def('aux_vector_file',
params['global'], None),
aux_vector_attrib=get_key_def('aux_vector_attrib',
params['global'], None),
aux_vector_ids=get_key_def('aux_vector_ids',
params['global'], None),
aux_vector_dist_maps=get_key_def(
'aux_vector_dist_maps', params['global'], True),
aux_vector_scale=get_key_def('aux_vector_scale',
params['global'], None))
meta_map, metadata = get_key_def("meta_map", params["global"],
{}), None
if meta_map:
assert img['meta'] is not None and isinstance(img['meta'], str) and os.path.isfile(img['meta']), \
"global configuration requested metadata mapping onto loaded samples, but raster did not have available metadata"
metadata = read_parameters(img['meta'])
if debug:
_tqdm.set_postfix(
OrderedDict(image_name=img_name,
image_shape=np_input_image.shape))
input_band_count = np_input_image.shape[
2] + MetaSegmentationDataset.get_meta_layer_count(meta_map)
assert input_band_count == params['global']['number_of_bands'], \
f"The number of bands in the input image ({input_band_count}) and the parameter" \
f"'number_of_bands' in the yaml file ({params['global']['number_of_bands']}) should be identical"
sem_seg_results = sem_seg_inference(model, np_input_image,
nbr_pix_overlap,
chunk_size, num_classes,
device, meta_map, metadata)
if debug and len(np.unique(sem_seg_results)) == 1:
print(
f'Something is wrong. Inference contains only one value. Make sure data scale is coherent with training domain values.'
)
create_new_raster_from_base(local_img, inference_image,
sem_seg_results)
tqdm.write(
f"Semantic segmentation of image {img_name} completed")
if bucket:
bucket.upload_file(
inference_image,
os.path.join(
params['inference']['working_folder'],
f"{img_name.split('.')[0]}_inference.tif"))
else:
raise ValueError(
f"The task should be either classification or segmentation. The provided value is {params['global']['task']}"
)
time_elapsed = time.time() - since
print('Inference completed in {:.0f}m {:.0f}s'.format(
time_elapsed // 60, time_elapsed % 60))
def main(params):
"""
Identify the class to which each image belongs.
:param params: (dict) Parameters found in the yaml config file.
"""
since = time.time()
img_dir_or_csv = params['inference']['img_dir_or_csv_file']
working_folder = Path(params['inference']['working_folder'])
Path.mkdir(working_folder, exist_ok=True)
print(f'Inferences will be saved to: {working_folder}')
bucket = None
bucket_name = params['global']['bucket_name']
model, state_dict_path, model_name = net(params, inference=True)
num_devices = params['global']['num_gpus'] if params['global'][
'num_gpus'] else 0
# list of GPU devices that are available and unused. If no GPUs, returns empty list
lst_device_ids = get_device_ids(
num_devices) if torch.cuda.is_available() else []
device = torch.device(f'cuda:{lst_device_ids[0]}' if torch.cuda.
is_available() and lst_device_ids else 'cpu')
if lst_device_ids:
print(f"Using Cuda device {lst_device_ids[0]}")
else:
warnings.warn(
f"No Cuda device available. This process will only run on CPU")
model.to(device)
if bucket_name:
s3 = boto3.resource('s3')
bucket = s3.Bucket(bucket_name)
if img_dir_or_csv.endswith('.csv'):
bucket.download_file(img_dir_or_csv, 'img_csv_file.csv')
list_img = read_csv('img_csv_file.csv', inference=True)
else:
raise NotImplementedError(
'Specify a csv file containing images for inference. Directory input not implemented yet'
)
else:
if img_dir_or_csv.endswith('.csv'):
list_img = read_csv(img_dir_or_csv, inference=True)
else:
img_dir = Path(img_dir_or_csv)
assert img_dir.exists(
), f'Could not find directory "{img_dir_or_csv}"'
list_img_paths = sorted(img_dir.glob('*.tif'))
list_img = []
for img_path in list_img_paths:
img = {}
img['tif'] = img_path
list_img.append(img)
assert len(
list_img) >= 0, f'No .tif files found in {img_dir_or_csv}'
if params['global']['task'] == 'classification':
classifier(params, list_img, model)
elif params['global']['task'] == 'segmentation':
if bucket:
bucket.download_file(state_dict_path, "saved_model.pth.tar")
model, _ = load_from_checkpoint("saved_model.pth.tar", model)
else:
model, _ = load_from_checkpoint(state_dict_path, model)
chunk_size, nbr_pix_overlap = calc_overlap(params)
num_classes = params['global']['num_classes']
with tqdm(list_img, desc='image list', position=0) as _tqdm:
for img in _tqdm:
img_name = os.path.basename(img['tif'])
if bucket:
local_img = f"Images/{img_name}"
bucket.download_file(img['tif'], local_img)
inference_image = f"Classified_Images/{img_name.split('.')[0]}_inference.tif"
else:
local_img = img['tif']
inference_image = os.path.join(
params['inference']['working_folder'],
f"{img_name.split('.')[0]}_inference.tif")
assert_band_number(local_img,
params['global']['number_of_bands'])
nd_array_tif = image_reader_as_array(local_img)
assert (len(np.unique(nd_array_tif)) > 1), (
f'Image "{img_name}" only contains {np.unique(nd_array_tif)} value.'
)
# See: http://cs231n.github.io/neural-networks-2/#datapre. e.g. Scale arrays from [0,255] to [0,1]
scale = params['global']['scale_data']
if scale:
sc_min, sc_max = params['global']['scale_data']
nd_array_tif = minmax_scale(
nd_array_tif,
orig_range=(np.min(nd_array_tif),
np.max(nd_array_tif)),
scale_range=(sc_min, sc_max))
if debug:
_tqdm.set_postfix(
OrderedDict(image_name=img_name,
image_shape=nd_array_tif.shape,
scale=scale))
sem_seg_results = sem_seg_inference(model, nd_array_tif,
nbr_pix_overlap,
chunk_size, num_classes,
device)
if debug and len(np.unique(sem_seg_results)) == 1:
print(
f'Something is wrong. Inference contains only "{np.unique(sem_seg_results)} value. Make sure '
f'"scale_data" parameter is coherent with parameters used for training model used in inference.'
)
create_new_raster_from_base(local_img, inference_image,
sem_seg_results)
tqdm.write(
f"Semantic segmentation of image {img_name} completed")
if bucket:
bucket.upload_file(
inference_image,
os.path.join(
params['inference']['working_folder'],
f"{img_name.split('.')[0]}_inference.tif"))
else:
raise ValueError(
f"The task should be either classification or segmentation. The provided value is {params['global']['task']}"
)
time_elapsed = time.time() - since
print('Inference completed in {:.0f}m {:.0f}s'.format(
time_elapsed // 60, time_elapsed % 60))
def set_hyperparameters(params, model, state_dict_path):
"""
Function to set hyperparameters based on values provided in yaml config file.
Will also set model to GPU, if available.
If none provided, default functions values are used.
:param params: (dict) Parameters found in the yaml config file
:param model: Model loaded from model_choice.py
:param state_dict_path: (str) Full file path to the state dict
:return: model, criterion, optimizer, lr_scheduler, num_gpus
"""
# assign default values to hyperparameters
loss_signature = inspect.signature(nn.CrossEntropyLoss).parameters
optim_signature = inspect.signature(optim.Adam).parameters
lr_scheduler_signature = inspect.signature(
optim.lr_scheduler.StepLR).parameters
class_weights = loss_signature['weight'].default
ignore_index = loss_signature['ignore_index'].default
lr = optim_signature['lr'].default
weight_decay = optim_signature['weight_decay'].default
step_size = lr_scheduler_signature['step_size'].default
if not isinstance(step_size, int):
step_size = params['training']['num_epochs'] + 1
gamma = lr_scheduler_signature['gamma'].default
num_devices = 0
# replace default values by those in config file if they exist
if params['training']['class_weights']:
class_weights = torch.tensor(params['training']['class_weights'])
verify_weights(params['global']['num_classes'], class_weights)
if params['training']['ignore_index']:
ignore_index = params['training']['ignore_index']
if params['training']['learning_rate']:
lr = params['training']['learning_rate']
if params['training']['weight_decay']:
weight_decay = params['training']['weight_decay']
if params['training']['step_size']:
step_size = params['training']['step_size']
if params['training']['gamma']:
gamma = params['training']['gamma']
if params['global']['num_gpus']:
num_devices = params['global']['num_gpus']
# Loss function
criterion = MultiClassCriterion(loss_type=params['training']['loss_fn'],
ignore_index=ignore_index,
weight=class_weights)
# list of GPU devices that are available and unused. If no GPUs, returns empty list
lst_device_ids = get_device_ids(
num_devices) if torch.cuda.is_available() else []
num_devices = len(lst_device_ids) if lst_device_ids else 0
device = torch.device(f'cuda:{lst_device_ids[0]}' if torch.cuda.
is_available() and lst_device_ids else 'cpu')
if num_devices == 1:
print(f"Using Cuda device {lst_device_ids[0]}")
elif num_devices > 1:
print(f"Using data parallel on devices {str(lst_device_ids)[1:-1]}")
model = nn.DataParallel(model, device_ids=lst_device_ids
) # adds prefix 'module.' to state_dict keys
else:
warnings.warn(
f"No Cuda device available. This process will only run on CPU")
criterion = criterion.to(device)
model = model.to(device)
# Optimizer
opt_fn = params['training']['optimizer']
optimizer = create_optimizer(params=model.parameters(),
mode=opt_fn,
base_lr=lr,
weight_decay=weight_decay)
lr_scheduler = optim.lr_scheduler.StepLR(optimizer=optimizer,
step_size=step_size,
gamma=gamma)
if state_dict_path != '':
model, optimizer = load_from_checkpoint(state_dict_path,
model,
optimizer=optimizer)
return model, criterion, optimizer, lr_scheduler, device, num_devices
def net(model_name: str,
num_bands: int,
num_channels: int,
dontcare_val: int,
num_devices: int,
train_state_dict_path: str = None,
pretrained: bool = True,
dropout_prob: float = False,
loss_fn: str = None,
optimizer: str = None,
class_weights: Sequence = None,
net_params=None,
conc_point: str = None,
coordconv_params=None,
inference_state_dict: str = None):
"""Define the neural net"""
msg = f'Number of bands specified incompatible with this model. Requires 3 band data.'
pretrained = False if train_state_dict_path or inference_state_dict else pretrained
dropout = True if dropout_prob else False
model = None
if model_name == 'unetsmall':
model = unet.UNetSmall(num_channels, num_bands, dropout, dropout_prob)
elif model_name == 'unet':
model = unet.UNet(num_channels, num_bands, dropout, dropout_prob)
elif model_name == 'ternausnet':
if not num_bands == 3:
raise NotImplementedError(msg)
model = TernausNet.ternausnet(num_channels)
elif model_name == 'checkpointed_unet':
model = checkpointed_unet.UNetSmall(num_channels, num_bands, dropout,
dropout_prob)
elif model_name == 'inception':
model = inception.Inception3(num_channels, num_bands)
elif model_name == 'fcn_resnet101':
if not num_bands == 3:
raise NotImplementedError(msg)
model = models.segmentation.fcn_resnet101(pretrained=False,
progress=True,
num_classes=num_channels,
aux_loss=None)
elif model_name == 'deeplabv3_resnet101':
if not (num_bands == 3 or num_bands == 4):
raise NotImplementedError(msg)
if num_bands == 3:
model = models.segmentation.deeplabv3_resnet101(
pretrained=pretrained, progress=True)
classifier = list(model.classifier.children())
model.classifier = nn.Sequential(*classifier[:-1])
model.classifier.add_module(
'4',
nn.Conv2d(classifier[-1].in_channels,
num_channels,
kernel_size=(1, 1)))
elif num_bands == 4:
model = models.segmentation.deeplabv3_resnet101(
pretrained=pretrained, progress=True)
if conc_point == 'baseline':
logging.info(
'Testing with 4 bands, concatenating at {}.'.format(
conc_point))
conv1 = model.backbone._modules['conv1'].weight.detach().numpy(
)
depth = np.expand_dims(
conv1[:, 1,
...], axis=1) # reuse green weights for infrared.
conv1 = np.append(conv1, depth, axis=1)
conv1 = torch.from_numpy(conv1).float()
model.backbone._modules['conv1'].weight = nn.Parameter(
conv1, requires_grad=True)
classifier = list(model.classifier.children())
model.classifier = nn.Sequential(*classifier[:-1])
model.classifier.add_module(
'4',
nn.Conv2d(classifier[-1].in_channels,
num_channels,
kernel_size=(1, 1)))
else:
classifier = list(model.classifier.children())
model.classifier = nn.Sequential(*classifier[:-1])
model.classifier.add_module(
'4',
nn.Conv2d(classifier[-1].in_channels,
num_channels,
kernel_size=(1, 1)))
###################
# conv1 = model.backbone._modules['conv1'].weight.detach().numpy()
# depth = np.random.uniform(low=-1, high=1, size=(64, 1, 7, 7))
# conv1 = np.append(conv1, depth, axis=1)
# conv1 = torch.from_numpy(conv1).float()
# model.backbone._modules['conv1'].weight = nn.Parameter(conv1, requires_grad=True)
###################
conc_point = 'conv1' if not conc_point else conc_point
model = LayersEnsemble(model, conc_point=conc_point)
logging.info(
f'Finetuning pretrained deeplabv3 with {num_bands} input channels (imagery bands). '
f'Concatenation point: "{conc_point}"')
elif model_name in lm_smp.keys():
lsmp = lm_smp[model_name]
# TODO: add possibility of our own weights
lsmp['params'][
'encoder_weights'] = "imagenet" if 'pretrained' in model_name.split(
"_") else None
lsmp['params']['in_channels'] = num_bands
lsmp['params']['classes'] = num_channels
lsmp['params']['activation'] = None
model = lsmp['fct'](**lsmp['params'])
else:
raise ValueError(
f'The model name {model_name} in the config.yaml is not defined.')
coordconv_convert = get_key_def('coordconv_convert', coordconv_params,
False)
if coordconv_convert:
centered = get_key_def('coordconv_centered', coordconv_params, True)
normalized = get_key_def('coordconv_normalized', coordconv_params,
True)
noise = get_key_def('coordconv_noise', coordconv_params, None)
radius_channel = get_key_def('coordconv_radius_channel',
coordconv_params, False)
scale = get_key_def('coordconv_scale', coordconv_params, 1.0)
# note: this operation will not attempt to preserve already-loaded model parameters!
model = coordconv.swap_coordconv_layers(model,
centered=centered,
normalized=normalized,
noise=noise,
radius_channel=radius_channel,
scale=scale)
if inference_state_dict:
state_dict_path = inference_state_dict
checkpoint = load_checkpoint(state_dict_path)
return model, checkpoint, model_name
else:
if train_state_dict_path is not None:
checkpoint = load_checkpoint(train_state_dict_path)
else:
checkpoint = None
# list of GPU devices that are available and unused. If no GPUs, returns empty list
gpu_devices_dict = get_device_ids(num_devices)
num_devices = len(gpu_devices_dict.keys())
logging.info(
f"Number of cuda devices requested: {num_devices}. "
f"Cuda devices available: {list(gpu_devices_dict.keys())}\n")
if num_devices == 1:
logging.info(
f"Using Cuda device 'cuda:{list(gpu_devices_dict.keys())[0]}'")
elif num_devices > 1:
logging.info(
f"Using data parallel on devices: {list(gpu_devices_dict.keys())[1:]}. "
f"Main device: 'cuda:{list(gpu_devices_dict.keys())[0]}'")
try: # For HPC when device 0 not available. Error: Invalid device id (in torch/cuda/__init__.py).
# DataParallel adds prefix 'module.' to state_dict keys
model = nn.DataParallel(model,
device_ids=list(
gpu_devices_dict.keys()))
except AssertionError:
logging.warning(
f"Unable to use devices with ids {gpu_devices_dict.keys()}"
f"Trying devices with ids {list(range(len(gpu_devices_dict.keys())))}"
)
model = nn.DataParallel(
model,
device_ids=list(range(len(gpu_devices_dict.keys()))))
else:
logging.warning(
f"No Cuda device available. This process will only run on CPU\n"
)
logging.info(
f'Setting model, criterion, optimizer and learning rate scheduler...\n'
)
device = torch.device(
f'cuda:{list(range(len(gpu_devices_dict.keys())))[0]}'
if gpu_devices_dict else 'cpu')
try: # For HPC when device 0 not available. Error: Cuda invalid device ordinal.
model.to(device)
except AssertionError:
logging.exception(f"Unable to use device. Trying device 0...\n")
device = torch.device(f'cuda' if gpu_devices_dict else 'cpu')
model.to(device)
model, criterion, optimizer, lr_scheduler = set_hyperparameters(
params=net_params,
num_classes=num_channels,
model=model,
checkpoint=checkpoint,
dontcare_val=dontcare_val,
loss_fn=loss_fn,
optimizer=optimizer,
class_weights=class_weights,
inference=inference_state_dict)
criterion = criterion.to(device)
return model, model_name, criterion, optimizer, lr_scheduler, device, gpu_devices_dict
def main(params, config_path):
"""
Function to train and validate a models for semantic segmentation or classification.
:param params: (dict) Parameters found in the yaml config file.
:param config_path: (str) Path to the yaml config file.
"""
now = datetime.datetime.now().strftime("%Y-%m-%d_%I-%M")
model, checkpoint, model_name = net(params)
bucket_name = params['global']['bucket_name']
data_path = params['global']['data_path']
modelname = config_path.stem
output_path = Path(data_path).joinpath('model') / modelname
try:
output_path.mkdir(parents=True, exist_ok=False)
except FileExistsError:
output_path = Path(str(output_path) + '_' + now)
output_path.mkdir(exist_ok=True)
print(f'Model and log files will be saved to: {output_path}')
task = params['global']['task']
num_classes = params['global']['num_classes']
batch_size = params['training']['batch_size']
if num_classes == 1:
# assume background is implicitly needed (makes no sense to train with one class otherwise)
# this will trigger some warnings elsewhere, but should succeed nonetheless
num_classes = 2
if bucket_name:
bucket, bucket_output_path, output_path, data_path = download_s3_files(
bucket_name=bucket_name,
data_path=data_path,
output_path=output_path,
num_classes=num_classes,
task=task)
elif not bucket_name and task == 'classification':
get_local_classes(num_classes, data_path, output_path)
since = time.time()
best_loss = 999
progress_log = Path(output_path) / 'progress.log'
if not progress_log.exists():
progress_log.open('w', buffering=1).write(
tsv_line('ep_idx', 'phase', 'iter', 'i_p_ep',
'time')) # Add header
trn_log = InformationLogger(output_path, 'trn')
val_log = InformationLogger(output_path, 'val')
tst_log = InformationLogger(output_path, 'tst')
num_devices = params['global']['num_gpus']
assert num_devices is not None and num_devices >= 0, "missing mandatory num gpus parameter"
# list of GPU devices that are available and unused. If no GPUs, returns empty list
lst_device_ids = get_device_ids(
num_devices) if torch.cuda.is_available() else []
num_devices = len(lst_device_ids) if lst_device_ids else 0
device = torch.device(f'cuda:{lst_device_ids[0]}' if torch.cuda.
is_available() and lst_device_ids else 'cpu')
if num_devices == 1:
print(f"Using Cuda device {lst_device_ids[0]}")
elif num_devices > 1:
print(f"Using data parallel on devices {str(lst_device_ids)[1:-1]}")
model = nn.DataParallel(model, device_ids=lst_device_ids
) # adds prefix 'module.' to state_dict keys
else:
warnings.warn(
f"No Cuda device available. This process will only run on CPU")
trn_dataloader, val_dataloader, tst_dataloader = create_dataloader(
data_path=data_path,
batch_size=batch_size,
task=task,
num_devices=num_devices,
params=params)
model, criterion, optimizer, lr_scheduler = set_hyperparameters(
params, model, checkpoint)
criterion = criterion.to(device)
model = model.to(device)
filename = os.path.join(output_path, 'checkpoint.pth.tar')
for epoch in range(0, params['training']['num_epochs']):
print(
f'\nEpoch {epoch}/{params["training"]["num_epochs"] - 1}\n{"-" * 20}'
)
trn_report = train(train_loader=trn_dataloader,
model=model,
criterion=criterion,
optimizer=optimizer,
scheduler=lr_scheduler,
num_classes=num_classes,
batch_size=batch_size,
task=task,
ep_idx=epoch,
progress_log=progress_log,
device=device)
trn_log.add_values(trn_report,
epoch,
ignore=['precision', 'recall', 'fscore', 'iou'])
val_report = evaluation(
eval_loader=val_dataloader,
model=model,
criterion=criterion,
num_classes=num_classes,
batch_size=batch_size,
task=task,
ep_idx=epoch,
progress_log=progress_log,
batch_metrics=params['training']['batch_metrics'],
dataset='val',
device=device)
val_loss = val_report['loss'].avg
if params['training']['batch_metrics'] is not None:
val_log.add_values(val_report, epoch)
else:
val_log.add_values(val_report,
epoch,
ignore=['precision', 'recall', 'fscore', 'iou'])
if val_loss < best_loss:
print("save checkpoint")
best_loss = val_loss
# More info: https://pytorch.org/tutorials/beginner/saving_loading_models.html#saving-torch-nn-dataparallel-models
state_dict = model.module.state_dict(
) if num_devices > 1 else model.state_dict()
torch.save(
{
'epoch': epoch,
'arch': model_name,
'model': state_dict,
'best_loss': best_loss,
'optimizer': optimizer.state_dict()
}, filename)
if bucket_name:
bucket_filename = os.path.join(bucket_output_path,
'checkpoint.pth.tar')
bucket.upload_file(filename, bucket_filename)
if bucket_name:
save_logs_to_bucket(bucket, bucket_output_path, output_path, now,
params['training']['batch_metrics'])
cur_elapsed = time.time() - since
print(
f'Current elapsed time {cur_elapsed // 60:.0f}m {cur_elapsed % 60:.0f}s'
)
# load checkpoint model and evaluate it on test dataset.
if int(
params['training']['num_epochs']
) > 0: #if num_epochs is set to 0, is loaded model to evaluate on test set
checkpoint = load_checkpoint(filename)
model, _ = load_from_checkpoint(checkpoint, model)
tst_report = evaluation(eval_loader=tst_dataloader,
model=model,
criterion=criterion,
num_classes=num_classes,
batch_size=batch_size,
task=task,
ep_idx=params['training']['num_epochs'],
progress_log=progress_log,
batch_metrics=params['training']['batch_metrics'],
dataset='tst',
device=device)
tst_log.add_values(tst_report, params['training']['num_epochs'])
if bucket_name:
bucket_filename = os.path.join(bucket_output_path,
'last_epoch.pth.tar')
bucket.upload_file(
"output.txt",
os.path.join(bucket_output_path, f"Logs/{now}_output.txt"))
bucket.upload_file(filename, bucket_filename)
time_elapsed = time.time() - since
print('Training complete in {:.0f}m {:.0f}s'.format(
time_elapsed // 60, time_elapsed % 60))
