def test_flying_chairs_eval(self):
dataset = generic_flow_dataset.make_dataset(
path=dataset_locations['chairs-all'], mode='train-sup')
dataset = dataset.take(1)
results = generic_flow_dataset.evaluate(inference_fn,
dataset,
height=200,
width=400,
num_plots=0,
plot_dir='/tmp/flying_chairs',
has_occlusion=False)
expected_keys = generic_flow_dataset.list_eval_keys()
self.assertEqual(set(expected_keys), set(results.keys()))
def test_flying_chairs(self):
dataset = generic_flow_dataset.make_dataset(
path=dataset_locations['chairs-all'],
mode='train-sup')
dataset = dataset.prefetch(1)
dataset = dataset.batch(1)
data_it = iter(dataset)
data = data_it.next()
image1 = data['images'][:, 0]
image2 = data['images'][:, 1]
flow = data['flow']
self._check_images_and_flow(
image1, image2, flow, save_images=False, plot_dir='/tmp/flying_chairs')
def test_chairs(self):
for dataset in ['chairs-all']:
size = DATASETS_AND_SIZE[dataset]
path = dataset_locations[dataset]
ds = generic_flow_dataset.make_dataset(path, mode='test')
self._check_size(ds, size)
def make_train_dataset(
train_on,
height,
width,
shuffle_buffer_size,
batch_size,
seq_len,
crop_instead_of_resize=False,
apply_augmentation=True,
include_ground_truth=False,
resize_gt_flow=True,
seed=41,
mode='train',
return_full_scale=True,
):
"""Build joint training dataset for all data in train_on.
Args:
train_on: string of the format 'format0:path0;format1:path1', e.g.
'kitti:/tmp/...'.
height: int, height to which the images will be resized or cropped.
width: int, width to which the images will be resized or cropped.
shuffle_buffer_size: int, size that will be used for the shuffle buffer.
batch_size: int, batch size for the iterator.
seq_len: int, number of frames per sequences (at the moment this should
always be 2)
crop_instead_of_resize: bool, indicates if cropping should be used instead
of resizing
apply_augmentation: bool, indicates if geometric and photometric data
augmentation shall be activated (paramaters are gin configurable)
include_ground_truth: bool, indicates if ground truth flow should be
included.
resize_gt_flow: bool, indicates if ground truth flow should be resized (only
important if resizing and supervised training is used)
seed: A seed for a random number generator, controls shuffling of data.
mode: str, the mode to pass to the data loader. defaults to 'train'
return_full_scale: bool, whether or not to include the full size, uncropped
images in the data dictionary.
Returns:
data: A tf.data.Iterator that produces batches of data dictionaries.
"""
train_datasets = []
# Split strings according to pattern "format0:path0;format1:path1".
for format_and_path in train_on.split(';'):
data_format, path = format_and_path.split(':')
if include_ground_truth:
mode += '-supervised'
# Add a dataset based on format and path.
if 'spoof' in data_format:
dataset = spoof_dataset.make_dataset(
path,
mode=mode,
seq_len=seq_len,
shuffle_buffer_size=shuffle_buffer_size,
height=None if crop_instead_of_resize else height,
width=None if crop_instead_of_resize else width,
resize_gt_flow=resize_gt_flow,
seed=seed,
)
elif 'multiframe' in data_format: # Multiframe data.
dataset_manager = smurf_multiframe_dataset.SmurfMultiframe()
dataset = dataset_manager.make_dataset(
path,
mode=mode,
seq_len=seq_len,
shuffle_buffer_size=shuffle_buffer_size,
height=None if crop_instead_of_resize else height,
width=None if crop_instead_of_resize else width,
resize_gt_flow=resize_gt_flow,
seed=seed,
)
elif 'kitti' in data_format:
dataset = kitti.make_dataset(
path,
mode=mode,
seq_len=seq_len,
shuffle_buffer_size=shuffle_buffer_size,
height=None if crop_instead_of_resize else height,
width=None if crop_instead_of_resize else width,
resize_gt_flow=resize_gt_flow,
seed=seed,
)
elif 'chairs' in data_format:
dataset = flow_dataset.make_dataset(
path,
mode=mode,
seq_len=seq_len,
shuffle_buffer_size=shuffle_buffer_size,
height=None if crop_instead_of_resize else height,
width=None if crop_instead_of_resize else width,
resize_gt_flow=resize_gt_flow,
gt_flow_shape=[384, 512, 2],
seed=seed,
)
elif 'sintel' in data_format:
dataset = sintel.make_dataset(
path,
mode=mode,
seq_len=seq_len,
shuffle_buffer_size=shuffle_buffer_size,
height=None if crop_instead_of_resize else height,
width=None if crop_instead_of_resize else width,
resize_gt_flow=resize_gt_flow,
seed=seed,
)
else:
print('Unknown data format "{}"'.format(data_format))
continue
train_datasets.append(dataset)
augmentation_fn = partial(smurf_augmentation.apply_augmentation,
crop_height=height,
crop_width=width,
return_full_scale=return_full_scale)
# After loading and augmentation the data can have unknown shape.
# The function below ensures that all data has the proper shape.
def _ensure_shapes():
# shape of the data
flow_height = height if resize_gt_flow else None
flow_width = width if resize_gt_flow else None
shapes = {
'images': (batch_size, seq_len, height, width, 3),
'flow': (batch_size, flow_height, flow_width, 2),
'flow_valid': (batch_size, flow_height, flow_width, 1),
'occlusions': (batch_size, height, width, 1),
}
def check_data(data):
output = {}
for key, val in data.items():
if key in shapes:
val = tf.ensure_shape(val, shapes[key])
output[key] = val
return output
return check_data
choice_dataset = tf.data.Dataset.range(len(train_datasets)).repeat()
train_ds = tf.data.experimental.choose_from_datasets(
train_datasets, choice_dataset)
if apply_augmentation:
train_ds = train_ds.map(augmentation_fn)
train_ds = train_ds.batch(batch_size, drop_remainder=True)
train_ds = train_ds.prefetch(1)
train_ds = train_ds.map(_ensure_shapes())
return train_ds
def make_eval_function(eval_on,
height,
width,
progress_bar,
plot_dir,
num_plots,
weights=None):
"""Build an evaluation function for smurf.
Args:
eval_on: string of the format 'format0:path0;format1:path1', e.g.
'kitti:/tmp/...'.
height: int, the height to which the images should be resized for inference.
width: int, the width to which the images should be resized for inference.
progress_bar: boolean, flag to indicate whether the function should print a
progress_bar during evaluaton.
plot_dir: string, optional path to a directory in which plots are saved (if
num_plots > 0).
num_plots: int, maximum number of qualitative results to plot for the
evaluation.
weights: dictionary of loss weights for computing loss on the evaluation
data.
Returns:
data: A pair consisting of an evaluation function and a list of strings
that holds the keys of the evaluation result.
"""
eval_functions_and_datasets = []
eval_keys = []
# Split strings according to pattern "format0:path0;format1:path1".
for format_and_path in eval_on.split(';'):
data_format, path = format_and_path.split(':')
# Add a dataset based on format and path.
if 'spoof' in data_format:
dataset = spoof_dataset.make_dataset(path, mode='eval')
eval_fn = partial(spoof_dataset.evaluate, prefix=data_format)
eval_keys += spoof_dataset.list_eval_keys(prefix=data_format)
elif 'kitti' in data_format:
if 'benchmark' in data_format:
dataset = kitti.make_dataset(path, mode='test')
eval_fn = kitti.benchmark
else:
dataset = kitti.make_dataset(path, mode='eval')
eval_fn = partial(kitti.evaluate, prefix=data_format)
eval_keys += kitti.list_eval_keys(prefix=data_format)
elif 'chairs' in data_format:
dataset = flow_dataset.make_dataset(path, mode='eval')
eval_fn = partial(
flow_dataset.evaluate,
prefix=data_format,
max_num_evals=
500, # We do this to avoid evaluating on 22k samples.
has_occlusion=False,
weights=weights)
eval_keys += flow_dataset.list_eval_keys(prefix=data_format)
elif 'sintel' in data_format:
if 'benchmark' in data_format:
# pylint:disable=g-long-lambda
# pylint:disable=cell-var-from-loop
eval_fn = lambda smurf: sintel.benchmark(inference_fn=smurf.
infer,
height=height,
width=width,
sintel_path=path,
plot_dir=plot_dir,
num_plots=num_plots)
assert len(eval_on.split(
';')) == 1, 'Sintel benchmark should be done in isolation.'
return eval_fn, []
dataset = sintel.make_dataset(path, mode='eval-occlusion')
eval_fn = partial(sintel.evaluate,
prefix=data_format,
weights=weights)
eval_keys += sintel.list_eval_keys(prefix=data_format)
else:
print('Unknown data format "{}"'.format(data_format))
continue
dataset = dataset.prefetch(1)
eval_functions_and_datasets.append((eval_fn, dataset))
# Make an eval function that aggregates all evaluations.
def eval_function(smurf):
result = dict()
for eval_fn, ds in eval_functions_and_datasets:
results = eval_fn(smurf.infer, ds, height, width, progress_bar,
plot_dir, num_plots)
for k, v in results.items():
result[k] = v
return result
return eval_function, eval_keys