def testWriteAndReadPairToFile(self):
data_1 = np.array([[[-1.0, 125.0, -2.5], [14.5, 3.5, 0.0]],
[[20.0, 0.0, 30.0], [25.5, 36.0, 42.0]]])
data_2 = np.array(
[[[255, 0, 5], [10, 300, 0]], [[20, 1, 100], [255, 360, 420]]],
dtype='uint32')
filename = os.path.join(FLAGS.test_tmpdir, 'test.datum_pair')
datum_io.WritePairToFile(data_1, data_2, filename)
data_read_1, data_read_2 = datum_io.ReadPairFromFile(filename)
self.assertAllEqual(data_read_1, data_1)
self.assertAllEqual(data_read_2, data_2)
def ExtractAggregatedRepresentationsToFiles(image_names, features_dir,
aggregation_config_path,
mapping_path,
output_aggregation_dir):
"""Extracts aggregated feature representations, saving them to files.
It checks if the aggregated representation for an image already exists,
and skips computation for those.
Args:
image_names: List of image names. These are used to compose input file names
for the feature files, and the output file names for aggregated
representations.
features_dir: Directory where DELF features are located.
aggregation_config_path: Path to AggregationConfig proto text file with
configuration to be used for extraction.
mapping_path: Optional CSV file which maps each .delf file name to the index
image ID and detected box ID. If regional aggregation is performed, this
should be set. Otherwise, this is ignored.
output_aggregation_dir: Directory where aggregation output will be written
to.
Raises:
ValueError: If AggregationConfig is malformed, or `mapping_path` is
missing.
"""
num_images = len(image_names)
# Parse AggregationConfig proto, and select output extension.
config = aggregation_config_pb2.AggregationConfig()
with tf.io.gfile.GFile(aggregation_config_path, 'r') as f:
text_format.Merge(f.read(), config)
output_extension = '.'
if config.use_regional_aggregation:
output_extension += 'r'
if config.aggregation_type == _VLAD:
output_extension += _VLAD_EXTENSION_SUFFIX
elif config.aggregation_type == _ASMK:
output_extension += _ASMK_EXTENSION_SUFFIX
elif config.aggregation_type == _ASMK_STAR:
output_extension += _ASMK_STAR_EXTENSION_SUFFIX
else:
raise ValueError('Invalid aggregation type: %d' %
config.aggregation_type)
# Read index mapping path, if provided.
if mapping_path:
images_to_box_feature_files = _ReadMappingBasenameToBoxNames(
mapping_path, image_names)
# Create output directory if necessary.
if not tf.io.gfile.exists(output_aggregation_dir):
tf.io.gfile.makedirs(output_aggregation_dir)
with tf.compat.v1.Session() as sess:
extractor = feature_aggregation_extractor.ExtractAggregatedRepresentation(
sess, config)
start = time.clock()
for i in range(num_images):
if i == 0:
print('Starting to extract aggregation from images...')
elif i % _STATUS_CHECK_ITERATIONS == 0:
elapsed = (time.clock() - start)
print('Processing image %d out of %d, last %d '
'images took %f seconds' %
(i, num_images, _STATUS_CHECK_ITERATIONS, elapsed))
start = time.clock()
image_name = image_names[i]
# Compose output file name, skip extraction for this image if it already
# exists.
output_aggregation_filename = os.path.join(
output_aggregation_dir, image_name + output_extension)
if tf.io.gfile.exists(output_aggregation_filename):
print('Skipping %s' % image_name)
continue
# Load DELF features.
if config.use_regional_aggregation:
if not mapping_path:
raise ValueError(
'Requested regional aggregation, but mapping_path was not '
'provided')
descriptors_list = []
num_features_per_box = []
for box_feature_file in images_to_box_feature_files[
image_name]:
delf_filename = os.path.join(
features_dir, box_feature_file + _DELF_EXTENSION)
_, _, box_descriptors, _, _ = feature_io.ReadFromFile(
delf_filename)
# If `box_descriptors` is empty, reshape it such that it can be
# concatenated with other descriptors.
if not box_descriptors.shape[0]:
box_descriptors = np.reshape(
box_descriptors,
[0, config.feature_dimensionality])
descriptors_list.append(box_descriptors)
num_features_per_box.append(box_descriptors.shape[0])
descriptors = np.concatenate(descriptors_list)
else:
input_delf_filename = os.path.join(
features_dir, image_name + _DELF_EXTENSION)
_, _, descriptors, _, _ = feature_io.ReadFromFile(
input_delf_filename)
# If `descriptors` is empty, reshape it to avoid extraction failure.
if not descriptors.shape[0]:
descriptors = np.reshape(
descriptors, [0, config.feature_dimensionality])
num_features_per_box = None
# Extract and save aggregation. If using VLAD, only
# `aggregated_descriptors` needs to be saved.
(aggregated_descriptors,
feature_visual_words) = extractor.Extract(descriptors,
num_features_per_box)
if config.aggregation_type == _VLAD:
datum_io.WriteToFile(aggregated_descriptors,
output_aggregation_filename)
else:
datum_io.WritePairToFile(aggregated_descriptors,
feature_visual_words.astype('uint32'),
output_aggregation_filename)
def main(argv):
if len(argv) > 1:
raise RuntimeError('Too many command-line arguments.')
# Read list of images from dataset file.
print('Reading list of images from dataset file...')
query_list, index_list, _ = dataset.ReadDatasetFile(
cmd_args.dataset_file_path)
if cmd_args.use_query_images:
image_list = query_list
else:
image_list = index_list
num_images = len(image_list)
print('done! Found %d images' % num_images)
# Parse AggregationConfig proto, and select output extension.
config = aggregation_config_pb2.AggregationConfig()
with tf.gfile.GFile(cmd_args.aggregation_config_path, 'r') as f:
text_format.Merge(f.read(), config)
output_extension = '.'
if config.use_regional_aggregation:
output_extension += 'r'
if config.aggregation_type == _VLAD:
output_extension += _VLAD_EXTENSION_SUFFIX
elif config.aggregation_type == _ASMK:
output_extension += _ASMK_EXTENSION_SUFFIX
elif config.aggregation_type == _ASMK_STAR:
output_extension += _ASMK_STAR_EXTENSION_SUFFIX
else:
raise ValueError('Invalid aggregation type: %d' %
config.aggregation_type)
# Read index mapping path, if provided.
if cmd_args.index_mapping_path:
images_to_box_feature_files = _ReadMappingBasenameToBoxNames(
cmd_args.index_mapping_path, image_list)
# Create output directory if necessary.
if not os.path.exists(cmd_args.output_aggregation_dir):
os.makedirs(cmd_args.output_aggregation_dir)
with tf.Session() as sess:
extractor = feature_aggregation_extractor.ExtractAggregatedRepresentation(
sess, config)
start = time.clock()
for i in range(num_images):
if i == 0:
print('Starting to extract aggregation from images...')
elif i % _STATUS_CHECK_ITERATIONS == 0:
elapsed = (time.clock() - start)
print('Processing image %d out of %d, last %d '
'images took %f seconds' %
(i, num_images, _STATUS_CHECK_ITERATIONS, elapsed))
start = time.clock()
image_name = image_list[i]
# Compose output file name, skip extraction for this image if it already
# exists.
output_aggregation_filename = os.path.join(
cmd_args.output_aggregation_dir, image_name + output_extension)
if tf.io.gfile.exists(output_aggregation_filename):
print('Skipping %s' % image_name)
continue
# Load DELF features.
if config.use_regional_aggregation:
if not cmd_args.index_mapping_path:
raise ValueError(
'Requested regional aggregation, but index_mapping_path was not '
'provided')
descriptors_list = []
num_features_per_box = []
for box_feature_file in images_to_box_feature_files[
image_name]:
delf_filename = os.path.join(
cmd_args.features_dir,
box_feature_file + _DELF_EXTENSION)
_, _, box_descriptors, _, _ = feature_io.ReadFromFile(
delf_filename)
# If `box_descriptors` is empty, reshape it such that it can be
# concatenated with other descriptors.
if not box_descriptors.shape[0]:
box_descriptors = np.reshape(
box_descriptors,
[0, config.feature_dimensionality])
descriptors_list.append(box_descriptors)
num_features_per_box.append(box_descriptors.shape[0])
descriptors = np.concatenate(descriptors_list)
else:
input_delf_filename = os.path.join(
cmd_args.features_dir, image_name + _DELF_EXTENSION)
_, _, descriptors, _, _ = feature_io.ReadFromFile(
input_delf_filename)
num_features_per_box = None
# Extract and save aggregation. If using VLAD, only
# `aggregated_descriptors` needs to be saved.
(aggregated_descriptors,
feature_visual_words) = extractor.Extract(descriptors,
num_features_per_box)
if config.aggregation_type == _VLAD:
datum_io.WriteToFile(aggregated_descriptors,
output_aggregation_filename)
else:
datum_io.WritePairToFile(aggregated_descriptors,
feature_visual_words.astype('uint32'),
output_aggregation_filename)