def preprocess_image_and_label(tf_image,
tf_label,
FLAGS,
ignore_label,
is_training=True,
tf_edge=None):
# print('tf_image shape',tf_image.shape)
# print('tf_label shape',tf_label.shape)
crop_size = FLAGS.train_crop_size
original_image, image, label, edge = input_preprocess.preprocess_image_and_label(
tf_image,
tf_label,
crop_height=crop_size[0],
crop_width=crop_size[1],
min_resize_value=FLAGS.min_resize_value,
max_resize_value=FLAGS.max_resize_value,
resize_factor=FLAGS.resize_factor,
min_scale_factor=FLAGS.min_scale_factor,
max_scale_factor=FLAGS.max_scale_factor,
scale_factor_step_size=FLAGS.scale_factor_step_size,
ignore_label=ignore_label,
is_training=is_training,
model_variant=FLAGS.model_variant,
edge=tf_edge)
if tf_edge is None:
return image, label
else:
# print('image shape',image.shape)
# print('labe shape',label.shape)
# print('edge shape',edge.shape)
return image, label, edge
def parse_record(raw_record, is_training):
example = _parse_example_proto(raw_record)
image = example['image']
label = example['labels_class']
image_name = example['image_name']
height = example['height']
width = example['width']
if label is not None:
if label.shape.ndims == 2:
label = tf.expand_dims(label, 2)
elif label.shape.ndims == 3 and label.shape.dims[2] == 1:
pass
else:
raise ValueError('Input label shape must be [height, width], or '
'[height, width, 1].')
label.set_shape([None, None, 1])
if is_training:
original_image, image, label = preprocess_image_and_label(
image,
label,
crop_height=params['crop_size'][0],
crop_width=params['crop_size'][1],
min_scale_factor=params['min_scale_factor'],
max_scale_factor=params['max_scale_factor'],
scale_factor_step_size=params['scale_factor_step_size'],
is_training=True,
model_variant='resnet_v1_50')
else:
original_image, image, label = preprocess_image_and_label(
image,
label,
crop_height=params['crop_size'][0],
crop_width=params['crop_size'][1],
is_training=False,
model_variant='resnet_v1_50')
sample = {
'image': image,
'label': label,
'height': height,
'width': width,
'image_name': image_name
}
return sample
def _preprocess_image(self, sample):
"""Preprocesses the image and label.
Args:
sample: A sample containing image and label.
Returns:
sample: Sample with preprocessed image and label.
Raises:
ValueError: Ground truth label not provided during training.
"""
image = sample[common.IMAGE]
label = sample[common.LABELS_CLASS]
preprocessed = input_preprocess.preprocess_image_and_label(
image=image,
label=label,
crop_height=self.crop_size[0],
crop_width=self.crop_size[1],
min_resize_value=self.min_resize_value,
max_resize_value=self.max_resize_value,
resize_factor=self.resize_factor,
min_scale_factor=self.min_scale_factor,
max_scale_factor=self.max_scale_factor,
scale_factor_step_size=self.scale_factor_step_size,
ignore_label=self.ignore_label,
is_training=self.is_training,
model_variant=self.model_variant,
non_uniform_sampling=self.non_uniform_sampling,
output_target_sampling=self.output_target_sampling)
if self.non_uniform_sampling is not None:
original_image, image, label, locations = preprocessed
sample[nus.SAMPLING] = locations
elif self.output_target_sampling:
original_image, image, label, target_sampling = preprocessed
sample[nus.TARGET_SAMPLING] = target_sampling
else:
original_image, image, label = preprocessed
sample[common.IMAGE] = image
if not self.is_training:
# Original image is only used during visualization.
sample[common.ORIGINAL_IMAGE] = original_image
if label is not None:
sample[common.LABEL] = label
# Remove common.LABEL_CLASS key in the sample since it is only used to
# derive label and not used in training and evaluation.
sample.pop(common.LABELS_CLASS, None)
return sample
def _create_input_tensors():
"""Creates and prepares input tensors for DeepLab model.
This method creates a 4-D uint8 image tensor 'ImageTensor' with shape
[1, None, None, 3]. The actual input tensor name to use during inference is
'ImageTensor:0'.
Returns:
image: Preprocessed 4-D float32 tensor with shape [1, crop_height,
crop_width, 3].
original_image_size: Original image shape tensor [height, width].
resized_image_size: Resized image shape tensor [height, width].
"""
# input_preprocess takes 4-D image tensor as input.
input_image = tf.placeholder(tf.uint8,
[FLAGS.inf_batch_size, None, None, 3],
name=_INPUT_NAME)
original_image_size = tf.shape(input_image)[1:3]
# Squeeze the dimension in axis=0 since `preprocess_image_and_label` assumes
# image to be 3-D.
# image = tf.squeeze(input_image, axis=0)
# resize image one by one, the input images must have the same shape hlc 018-11-5
multi_images = []
resized_image_size = None
for one_image in tf.unstack(input_image):
resized_image, one_image_out, _ = input_preprocess.preprocess_image_and_label(
one_image,
label=None,
crop_height=FLAGS.crop_size[0],
crop_width=FLAGS.crop_size[1],
min_resize_value=FLAGS.min_resize_value,
max_resize_value=FLAGS.max_resize_value,
resize_factor=FLAGS.resize_factor,
is_training=False,
model_variant=FLAGS.model_variant)
new_size = tf.shape(resized_image)[:2]
if resized_image_size is None:
resized_image_size = new_size
# if resized_image_size[0] != new_size[0] or resized_image_size[1] != new_size[1]:
# print(resized_image_size, "!=",new_size)
# raise ValueError("resized_image_size not equal to new_size")
multi_images.append(one_image_out)
# stack them
image = tf.stack(multi_images, axis=0)
print(image)
# Expand the dimension in axis=0, since the following operations assume the
# image to be 4-D.
# image = tf.expand_dims(image, 0)
return image, original_image_size, resized_image_size
def _preprocess_image(self, sample):
"""Preprocesses the image and label.
Args:
sample: A sample containing image and label.
Returns:
sample: Sample with preprocessed image and label.
Raises:
ValueError: Ground truth label not provided during training.
"""
image = sample[common.IMAGE]
###########################################
# There aren't test true masks
if self.split_name == 'test':
label = None
else:
label = sample[common.LABELS_CLASS]
###########################################
original_image, image, label = input_preprocess.preprocess_image_and_label(
image=image,
label=label,
crop_height=self.crop_size[0],
crop_width=self.crop_size[1],
min_resize_value=self.min_resize_value,
max_resize_value=self.max_resize_value,
resize_factor=self.resize_factor,
min_scale_factor=self.min_scale_factor,
max_scale_factor=self.max_scale_factor,
scale_factor_step_size=self.scale_factor_step_size,
ignore_label=self.ignore_label,
is_training=self.is_training,
model_variant=self.model_variant)
sample[common.IMAGE] = image
if not self.is_training:
# Original image is only used during visualization.
sample[common.ORIGINAL_IMAGE] = original_image
if label is not None:
sample[common.LABEL] = label
# Remove common.LABEL_CLASS key in the sample since it is only used to
# derive label and not used in training and evaluation.
sample.pop(common.LABELS_CLASS, None)
return sample
def _preprocess_image(self, sample):
"""Preprocesses the image and label.
Args:
sample: A sample containing image and label.
Returns:
sample: Sample with preprocessed image and label.
Raises:
ValueError: Ground truth label not provided during training.
"""
# import pdb; pdb.set_trace()
image = sample[common.IMAGE]
label = sample[common.LABELS_CLASS]
# import matplotlib.pyplot as plt
# print("shape of image: ", image.shape)
# import pdb; pdb.set_trace()
original_image, image, label = input_preprocess.preprocess_image_and_label(
image=image,
label=label,
crop_height=self.crop_size[0],
crop_width=self.crop_size[1],
min_resize_value=self.min_resize_value,
max_resize_value=self.max_resize_value,
resize_factor=self.resize_factor,
min_scale_factor=self.min_scale_factor,
max_scale_factor=self.max_scale_factor,
scale_factor_step_size=self.scale_factor_step_size,
ignore_label=self.ignore_label,
is_training=self.is_training,
model_variant=self.model_variant)
sample[common.IMAGE] = image
if not self.is_training:
# Original image is only used during visualization.
sample[common.ORIGINAL_IMAGE] = original_image
if label is not None:
sample[common.LABEL] = label
# Remove common.LABEL_CLASS key in the sample since it is only used to
# derive label and not used in training and evaluation.
sample.pop(common.LABELS_CLASS, None)
return sample
def preprocess_image(image_buffer):
decode = tf.image.decode_png(image_buffer, channels=3)
original_image, image, _ = input_preprocess.preprocess_image_and_label(
decode,
label=None,
crop_height=CROP_SIZE[0],
crop_width=CROP_SIZE[1],
min_resize_value=None,
max_resize_value=None,
resize_factor=None,
ignore_label=255,
is_training=False,
model_variant="xception_65")
#image = tf.expand_dims(image, 0)
return image
def _preprocess_image(self, sample):
"""Preprocesses the image and label.
Args:
sample: A sample containing image and label.
Returns:
sample: Sample with preprocessed image and label.
Raises:
ValueError: Ground truth label not provided during training.
"""
image = sample[common.IMAGE]
label = sample[common.LABELS_CLASS]
original_image, image, label = input_preprocess.preprocess_image_and_label(
image=image,
label=label,
crop_height=self.crop_size[0],
crop_width=self.crop_size[1],
min_resize_value=self.min_resize_value,
max_resize_value=self.max_resize_value,
resize_factor=self.resize_factor,
min_scale_factor=self.min_scale_factor,
max_scale_factor=self.max_scale_factor,
scale_factor_step_size=self.scale_factor_step_size,
ignore_label=self.ignore_label,
is_training=self.is_training,
model_variant=self.model_variant)
sample[common.IMAGE] = image
if not self.is_training:
# Original image is only used during visualization.
sample[common.ORIGINAL_IMAGE] = original_image
if label is not None:
sample[common.LABEL] = label
# Remove common.LABEL_CLASS key in the sample since it is only used to
# derive label and not used in training and evaluation.
sample.pop(common.LABELS_CLASS, None)
return sample
def _construct_and_fill_model(self):
self.device_ids = sly.remap_gpu_devices(self.config['gpu_devices'])
initialized_model = namedtuple('Model',
['input_images', 'predictions', 'sess'])
with tf.get_default_graph().as_default():
img = tf.placeholder(tf.float32, shape=(None, None, 3))
input_w, input_h = self.input_size_wh
img_re = tf.image.resize_images(img, (input_h, input_w))
original_image, image, label = input_preprocess.preprocess_image_and_label(
img_re,
None,
crop_height=input_h,
crop_width=input_w,
is_training=False,
model_variant="xception_65")
image = tf.expand_dims(image, 0)
model_options = ModelOptions(
outputs_to_num_classes={'semantic': len(self.train_classes)},
crop_size=(input_h, input_w),
atrous_rates=[6, 12, 18],
output_stride=16)
predictions = model.predict_logits(tf.shape(img)[0:2],
image,
model_options=model_options,
image_pyramid=None)
predictions = predictions['semantic']
saver = tf.train.Saver(slim.get_variables_to_restore())
sess = tf.train.MonitoredTrainingSession(master='')
saver.restore(
sess,
self.helper.paths.model_dir + '/model_weights/model.ckpt')
initialized_model.input_images = img
initialized_model.predictions = predictions
initialized_model.sess = sess
self.initialized_model = initialized_model
logger.info('Weights are loaded.')
def _create_input_tensors():
"""Creates and prepares input tensors for DeepLab model.
This method creates a 4-D uint8 image tensor 'ImageTensor' with shape
[1, None, None, 3]. The actual input tensor name to use during inference is
'ImageTensor:0'.
输入图像名称：ImageTensor:0
Returns:
image: Preprocessed 4-D float32 tensor with shape [1, crop_height,
crop_width, 3].
original_image_size: Original image shape tensor [height, width].
resized_image_size: Resized image shape tensor [height, width].
"""
# input_preprocess takes 4-D image tensor as input.
input_image = tf.placeholder(tf.uint8, [1, None, None, 3],
name=_INPUT_NAME)
original_image_size = tf.shape(input_image)[1:3]
# Squeeze the dimension in axis=0 since `preprocess_image_and_label` assumes
# image to be 3-D.
image = tf.squeeze(input_image, axis=0)
resized_image, image, _ = input_preprocess.preprocess_image_and_label(
image,
label=None,
crop_height=FLAGS.crop_size[0],
crop_width=FLAGS.crop_size[1],
min_resize_value=FLAGS.min_resize_value,
max_resize_value=FLAGS.max_resize_value,
resize_factor=FLAGS.resize_factor,
is_training=False,
model_variant=FLAGS.model_variant)
resized_image_size = tf.shape(resized_image)[:2]
# Expand the dimension in axis=0, since the following operations assume the
# image to be 4-D.
image = tf.expand_dims(image, 0)
return image, original_image_size, resized_image_size
def _create_input_tensors():
"""Creates and prepares input tensors for DeepLab model.
This method creates a 4-D uint8 image tensor 'ImageTensor' with shape
[1, None, None, 3]. The actual input tensor name to use during inference is
'ImageTensor:0'.
Returns:
image: Preprocessed 4-D float32 tensor with shape [1, crop_height,
crop_width, 3].
original_image_size: Original image shape tensor [height, width].
resized_image_size: Resized image shape tensor [height, width].
"""
# input_preprocess takes 4-D image tensor as input.
input_image = tf.placeholder(tf.uint8, [1, None, None, 3], name=_INPUT_NAME)
original_image_size = tf.shape(input_image)[1:3]
# Squeeze the dimension in axis=0 since `preprocess_image_and_label` assumes
# image to be 3-D.
image = tf.squeeze(input_image, axis=0)
resized_image, image, _ = input_preprocess.preprocess_image_and_label(
image,
label=None,
crop_height=FLAGS.crop_size[0],
crop_width=FLAGS.crop_size[1],
min_resize_value=FLAGS.min_resize_value,
max_resize_value=FLAGS.max_resize_value,
resize_factor=FLAGS.resize_factor,
is_training=False,
model_variant=FLAGS.model_variant)
resized_image_size = tf.shape(resized_image)[:2]
# Expand the dimension in axis=0, since the following operations assume the
# image to be 4-D.
image = tf.expand_dims(image, 0)
return image, original_image_size, resized_image_size
def get(dataset,
crop_size,
batch_size,
min_resize_value=None,
max_resize_value=None,
resize_factor=None,
min_scale_factor=1.,
max_scale_factor=1.,
scale_factor_step_size=0,
num_readers=1,
num_threads=1,
dataset_split=None,
is_training=True,
model_variant=None):
"""Gets the dataset split for semantic segmentation.
This functions gets the dataset split for semantic segmentation. In
particular, it is a wrapper of (1) dataset_data_provider which returns the raw
dataset split, (2) input_preprcess which preprocess the raw data, and (3) the
Tensorflow operation of batching the preprocessed data. Then, the output could
be directly used by training, evaluation or visualization.
Args:
dataset: An instance of slim Dataset.
crop_size: Image crop size [height, width].
batch_size: Batch size.
min_resize_value: Desired size of the smaller image side.
max_resize_value: Maximum allowed size of the larger image side.
resize_factor: Resized dimensions are multiple of factor plus one.
min_scale_factor: Minimum scale factor value.
max_scale_factor: Maximum scale factor value.
scale_factor_step_size: The step size from min scale factor to max scale
factor. The input is randomly scaled based on the value of
(min_scale_factor, max_scale_factor, scale_factor_step_size).
num_readers: Number of readers for data provider.
num_threads: Number of threads for batching data.
dataset_split: Dataset split.
is_training: Is training or not.
model_variant: Model variant (string) for choosing how to mean-subtract the
images. See feature_extractor.network_map for supported model variants.
Returns:
A dictionary of batched Tensors for semantic segmentation.
Raises:
ValueError: dataset_split is None, failed to find labels, or label shape
is not valid.
"""
if dataset_split is None:
raise ValueError('Unknown dataset split.')
if model_variant is None:
tf.logging.warning('Please specify a model_variant. See '
'feature_extractor.network_map for supported model '
'variants.')
data_provider = dataset_data_provider.DatasetDataProvider(
dataset,
num_readers=num_readers,
num_epochs=None if is_training else 1,
shuffle=is_training)
image, label, image_name, height, width = _get_data(
data_provider, dataset_split)
if label is not None:
if label.shape.ndims == 2:
label = tf.expand_dims(label, 2)
elif label.shape.ndims == 3 and label.shape.dims[2] == 1:
pass
else:
raise ValueError('Input label shape must be [height, width], or '
'[height, width, 1].')
label.set_shape([None, None, 1])
original_image, image, label = input_preprocess.preprocess_image_and_label(
image,
label,
crop_height=crop_size[0],
crop_width=crop_size[1],
min_resize_value=min_resize_value,
max_resize_value=max_resize_value,
resize_factor=resize_factor,
min_scale_factor=min_scale_factor,
max_scale_factor=max_scale_factor,
scale_factor_step_size=scale_factor_step_size,
ignore_label=dataset.ignore_label,
is_training=is_training,
model_variant=model_variant)
#tf.Print(image_name, [image_name])
#print(image_name.get_shape().as_list())
#print(image.get_shape().as_list())
#print(label.get_shape().as_list())
print(image_name)
sample = {
common.IMAGE: image,
common.IMAGE_NAME: image_name,
common.HEIGHT: height,
common.WIDTH: width
}
if label is not None:
sample[common.LABEL] = label
if not is_training:
# Original image is only used during visualization.
sample[common.ORIGINAL_IMAGE] = original_image,
num_threads = 1
return tf.train.batch(sample,
batch_size=batch_size,
num_threads=num_threads,
capacity=32 * batch_size,
allow_smaller_final_batch=not is_training,
dynamic_pad=True)
def __call__(self, params):
"""Reads, preprocesses and batches data for TPUEstimator."""
data_provider = dataset_data_provider.DatasetDataProvider(
self._dataset,
num_readers=self._num_readers,
shuffle=self._is_training,
num_epochs=None if self._is_training else 1
)
image, label, image_name, height, width = get_data(
data_provider, self._split_name)
if label is not None:
if label.shape.ndims == 2:
label = tf.expand_dims(label, 2)
elif label.shape.ndims == 3 and label.shape.dims[2] == 1:
pass
else:
raise ValueError('Input label shape must be [height, width], or '
'[height, width, 1].')
label.set_shape([None, None, 1])
crop_height, crop_width = params['crop_size']
original_image, image, label = input_preprocess.preprocess_image_and_label(
image,
label,
crop_height=crop_height,
crop_width=crop_width,
min_resize_value=params['min_resize_value'],
max_resize_value=params['max_resize_value'],
resize_factor=params['resize_factor'],
min_scale_factor=params['min_scale_factor'],
max_scale_factor=params['max_scale_factor'],
scale_factor_step_size=params['scale_factor_step_size'],
ignore_label=self._dataset.ignore_label,
is_training=self._is_training,
model_variant=self._model_variant)
sample = {
'image': image,
'image_name': image_name,
'height': height,
'width': width
}
if label is not None:
sample['label'] = label
num_threads = self._num_threads
if not self._is_training:
# Original image is only used during visualization.
sample['original_image'] = original_image,
num_threads = 1
# TODO(shizhiw): switch to tf.data.
batch = tf.train.batch(
sample,
batch_size=params['batch_size'],
num_threads=num_threads,
capacity=32 * params['batch_size'],
allow_smaller_final_batch=False,
dynamic_pad=True)
return batch['image'], batch['label']
def main(unused_argv):
dataset = segmentation_dataset.get_dataset(FLAGS.dataset,
FLAGS.train_split,
dataset_dir=FLAGS.dataset_dir)
is_training = True
num_readers = 1
data_provider = dataset_data_provider.DatasetDataProvider(
dataset,
num_readers=num_readers,
num_epochs=None if is_training else 1,
shuffle=is_training)
# items=['image','image_name','height','width','labels_class']
# for item in items:
# print(data_provider.get([item]))
image, height, width = data_provider.get(
[common.IMAGE, common.HEIGHT, common.WIDTH])
sess = tf.Session()
init = tf.global_variables_initializer()
sess.run(init)
tf.train.start_queue_runners(sess)
np_image, np_height, np_width = sess.run([image, height, width])
print(np_image.shape, np_height, np_width)
# Some datasets do not contain image_name.
if common.IMAGE_NAME in data_provider.list_items():
image_name, = data_provider.get([common.IMAGE_NAME])
else:
image_name = tf.constant('')
label = None
if FLAGS.train_split != common.TEST_SET:
label, = data_provider.get([common.LABELS_CLASS])
if label is not None:
if label.shape.ndims == 2:
label = tf.expand_dims(label, 2)
elif label.shape.ndims == 3 and label.shape.dims[2] == 1:
pass
else:
raise ValueError('Input label shape must be [height, width], or '
'[height, width, 1].')
label.set_shape([None, None, 1])
crop_size = FLAGS.train_crop_size
original_image, image, label = input_preprocess.preprocess_image_and_label(
image,
label,
crop_height=crop_size[0],
crop_width=crop_size[1],
min_resize_value=FLAGS.min_resize_value,
max_resize_value=FLAGS.max_resize_value,
resize_factor=FLAGS.resize_factor,
min_scale_factor=FLAGS.min_scale_factor,
max_scale_factor=FLAGS.max_scale_factor,
scale_factor_step_size=FLAGS.scale_factor_step_size,
ignore_label=dataset.ignore_label,
is_training=is_training,
model_variant=FLAGS.model_variant)
np_org_img, np_img, np_label = sess.run([original_image, image, label])
print(np_org_img.shape, np_img.shape, np_label.shape)
sample = {
common.IMAGE: image,
common.IMAGE_NAME: image_name,
common.HEIGHT: height,
common.WIDTH: width
}
if label is not None:
sample[common.LABEL] = label
num_threads = 1
if not is_training:
# Original image is only used during visualization.
sample[common.ORIGINAL_IMAGE] = original_image,
num_threads = 1
batch_size = 2
# device='/device:GPU:0' if tf.test.is_gpu_available() else '/device:CPU:0'
samples = tf.train.batch(sample,
batch_size=batch_size,
num_threads=num_threads,
capacity=2 * batch_size,
allow_smaller_final_batch=not is_training,
dynamic_pad=True)
for key in samples.keys():
print(key)
num_clones = 2
inputs_queue = prefetch_queue.prefetch_queue(samples,
capacity=2 * num_clones)
samples = inputs_queue.dequeue()
print('dequeue' + '*' * 50)
# Add name to input and label nodes so we can add to summary.
samples[common.IMAGE] = tf.identity(samples[common.IMAGE],
name=common.IMAGE)
samples[common.LABEL] = tf.identity(samples[common.LABEL],
name=common.LABEL)
print('image shape', image.shape, type(image))
print(samples[common.IMAGE].shape)
print(samples[common.LABEL].shape)
print(samples[common.IMAGE].dtype)
print(samples[common.LABEL].dtype)
tf.train.start_queue_runners(sess)
image = sess.run(samples[common.IMAGE])
label = sess.run(samples[common.LABEL])
ids = np.unique(label)
for idx in range(batch_size):
samples[common.IMAGE][idx, :, :, :] = samples[common.IMAGE][
batch_size - 1 - idx, :, :, :]
print('unique ids is: ', ids)
print('end' + '.' * 50)
edge = batch_get_edge(label)
samples[common.EDGE] = tf.convert_to_tensor(edge,
dtype=tf.int32,
name=common.EDGE)
def get(dataset,
crop_size,
batch_size,
min_resize_value=None,
max_resize_value=None,
resize_factor=None,
min_scale_factor=1.,
max_scale_factor=1.,
scale_factor_step_size=0,
num_readers=1,
num_threads=1,
dataset_split=None,
is_training=True,
model_variant=None):
"""Gets the dataset split for semantic segmentation.
This functions gets the dataset split for semantic segmentation. In
particular, it is a wrapper of (1) dataset_data_provider which returns the raw
dataset split, (2) input_preprcess which preprocess the raw data, and (3) the
Tensorflow operation of batching the preprocessed data. Then, the output could
be directly used by training, evaluation or visualization.
Args:
dataset: An instance of slim Dataset.
crop_size: Image crop size [height, width].
batch_size: Batch size.
min_resize_value: Desired size of the smaller image side.
max_resize_value: Maximum allowed size of the larger image side.
resize_factor: Resized dimensions are multiple of factor plus one.
min_scale_factor: Minimum scale factor value.
max_scale_factor: Maximum scale factor value.
scale_factor_step_size: The step size from min scale factor to max scale
factor. The input is randomly scaled based on the value of
(min_scale_factor, max_scale_factor, scale_factor_step_size).
num_readers: Number of readers for data provider.
num_threads: Number of threads for batching data.
dataset_split: Dataset split.
is_training: Is training or not.
model_variant: Model variant (string) for choosing how to mean-subtract the
images. See feature_extractor.network_map for supported model variants.
Returns:
A dictionary of batched Tensors for semantic segmentation.
Raises:
ValueError: dataset_split is None, failed to find labels, or label shape
is not valid.
"""
if dataset_split is None:
raise ValueError('Unknown dataset split.')
if model_variant is None:
tf.logging.warning('Please specify a model_variant. See '
'feature_extractor.network_map for supported model '
'variants.')
data_provider = dataset_data_provider.DatasetDataProvider(
dataset,
num_readers=num_readers,
num_epochs=None if is_training else 1,
shuffle=is_training)
image, label, image_name, height, width = _get_data(data_provider,
dataset_split)
if label is not None:
if label.shape.ndims == 2:
label = tf.expand_dims(label, 2)
elif label.shape.ndims == 3 and label.shape.dims[2] == 1:
pass
else:
raise ValueError('Input label shape must be [height, width], or '
'[height, width, 1].')
label.set_shape([None, None, 1])
original_image, image, label = input_preprocess.preprocess_image_and_label(
image,
label,
crop_height=crop_size[0],
crop_width=crop_size[1],
min_resize_value=min_resize_value,
max_resize_value=max_resize_value,
resize_factor=resize_factor,
min_scale_factor=min_scale_factor,
max_scale_factor=max_scale_factor,
scale_factor_step_size=scale_factor_step_size,
ignore_label=dataset.ignore_label,
is_training=is_training,
model_variant=model_variant)
sample = {
common.IMAGE: image,
common.IMAGE_NAME: image_name,
common.HEIGHT: height,
common.WIDTH: width
}
if label is not None:
sample[common.LABEL] = label
if not is_training:
# Original image is only used during visualization.
sample[common.ORIGINAL_IMAGE] = original_image,
num_threads = 1
return tf.train.batch(
sample,
batch_size=batch_size,
num_threads=num_threads,
capacity=32 * batch_size,
allow_smaller_final_batch=not is_training,
dynamic_pad=True)
def get(data_dict,
crop_size,
num_threads=2,
is_training=True,
model_variant=None):
batch_size = data_dict['batch_size']
# img_names, img_paths, ann_paths, labels_mapping, project_meta = structure
img_names = [sample.img_path for sample in data_dict['samples']]
img_paths = [sample.img_path for sample in data_dict['samples']]
ann_paths = [sample.ann_path for sample in data_dict['samples']]
def load_ann(ann_path,
labels_mapping=data_dict['classes_mapping'],
project_meta=data_dict['project_meta'],
out_size=crop_size):
label = ann2label(ann_path,
class_mapping=labels_mapping,
project_meta=project_meta,
out_size_wh=out_size)
return label
def read_images_and_labels(input_queue, out_size=crop_size):
value = tf.read_file(input_queue[0])
image = tf.image.decode_jpeg(value)
image = tf.image.resize_images(image, out_size)
label_part = tf.identity(input_queue[1])
label = tf.py_func(load_ann, [label_part], tf.float32, stateful=False)
label.set_shape(out_size)
label = tf.cast(label, tf.float32)
return image, label
image_name = ops.convert_to_tensor(img_names, dtype=dtypes.string)
images = ops.convert_to_tensor(img_paths)
anns = ops.convert_to_tensor(ann_paths)
input_images_and_labels_queue = tf.train.slice_input_producer(
[images, anns], shuffle=True)
image, label = read_images_and_labels(input_images_and_labels_queue)
if label is not None:
if label.shape.ndims == 2:
label = tf.expand_dims(label, 2)
elif label.shape.ndims == 3 and label.shape.dims[2] == 1:
pass
else:
raise ValueError('Input label shape must be [height, width], or '
'[height, width, 1].')
label.set_shape([None, None, 1])
original_image, image, label = input_preprocess.preprocess_image_and_label(
image,
label,
crop_height=crop_size[0],
crop_width=crop_size[1],
ignore_label=255,
is_training=is_training,
model_variant=model_variant)
# image.set_shape([crop_size[1], crop_size[0], 3])
# label.set_shape([crop_size[1], crop_size[0], 1])
# label = tf.cast(label, tf.int32)
sample = {'image': image, 'image_name': image_name, 'label': label}
return tf.train.batch(sample,
batch_size=batch_size,
num_threads=num_threads,
capacity=32 * batch_size,
allow_smaller_final_batch=is_training,
dynamic_pad=True)
