def _create_tfrecord_dataset(tmpdir):
if not gfile.Exists(tmpdir):
gfile.MakeDirs(tmpdir)
data_sources = test_utils.create_tfrecord_files(tmpdir, num_files=1)
keys_to_features = {
'image/encoded':
parsing_ops.FixedLenFeature(shape=(),
dtype=dtypes.string,
default_value=''),
'image/format':
parsing_ops.FixedLenFeature(shape=(),
dtype=dtypes.string,
default_value='jpeg'),
'image/class/label':
parsing_ops.FixedLenFeature(shape=[1],
dtype=dtypes.int64,
default_value=array_ops.zeros(
[1], dtype=dtypes.int64))
}
items_to_handlers = {
'image': tfexample_decoder.Image(),
'label': tfexample_decoder.Tensor('image/class/label'),
}
decoder = tfexample_decoder.TFExampleDecoder(keys_to_features,
items_to_handlers)
return dataset.Dataset(data_sources=data_sources,
reader=io_ops.TFRecordReader,
decoder=decoder,
num_samples=100,
items_to_descriptions=None)
def testDecodeExampleWithTensor(self):
tensor_shape = (2, 3, 1)
np_array = np.random.rand(2, 3, 1)
example = example_pb2.Example(features=feature_pb2.Features(
feature={
'image/depth_map': self._EncodedFloatFeature(np_array),
}))
serialized_example = example.SerializeToString()
with self.test_session():
serialized_example = array_ops.reshape(serialized_example,
shape=[])
keys_to_features = {
'image/depth_map':
parsing_ops.FixedLenFeature(
tensor_shape,
dtypes.float32,
default_value=array_ops.zeros(tensor_shape))
}
items_to_handlers = {
'depth': tfexample_decoder.Tensor('image/depth_map')
}
decoder = tfexample_decoder.TFExampleDecoder(
keys_to_features, items_to_handlers)
[tf_depth] = decoder.decode(serialized_example, ['depth'])
depth = tf_depth.eval()
self.assertAllClose(np_array, depth)
def testDecodeExampleWithFixLenTensorWithShape(self):
np_array = np.array([[1, 2, 3], [4, 5, 6]])
example = example_pb2.Example(features=feature_pb2.Features(
feature={
'labels': self._EncodedInt64Feature(np_array),
}))
serialized_example = example.SerializeToString()
with self.test_session():
serialized_example = array_ops.reshape(serialized_example,
shape=[])
keys_to_features = {
'labels':
parsing_ops.FixedLenFeature(np_array.shape,
dtype=dtypes.int64),
}
items_to_handlers = {
'labels': tfexample_decoder.Tensor('labels',
shape=np_array.shape),
}
decoder = tfexample_decoder.TFExampleDecoder(
keys_to_features, items_to_handlers)
[tf_labels] = decoder.decode(serialized_example, ['labels'])
labels = tf_labels.eval()
self.assertAllEqual(labels, np_array)
def testDecodeExampleWithStringTensor(self):
tensor_shape = (2, 3, 1)
np_array = np.array([[['ab'], ['cd'], ['ef']],
[['ghi'], ['jkl'], ['mnop']]])
example = example_pb2.Example(features=feature_pb2.Features(
feature={
'labels': self._BytesFeature(np_array),
}))
serialized_example = example.SerializeToString()
with self.test_session():
serialized_example = array_ops.reshape(serialized_example,
shape=[])
keys_to_features = {
'labels':
parsing_ops.FixedLenFeature(tensor_shape,
dtypes.string,
default_value=constant_op.constant(
'',
shape=tensor_shape,
dtype=dtypes.string))
}
items_to_handlers = {
'labels': tfexample_decoder.Tensor('labels'),
}
decoder = tfexample_decoder.TFExampleDecoder(
keys_to_features, items_to_handlers)
[tf_labels] = decoder.decode(serialized_example, ['labels'])
labels = tf_labels.eval()
labels = labels.astype(np_array.dtype)
self.assertTrue(np.array_equal(np_array, labels))
def testDecodeExampleMultiShapeKeyTensor(self):
np_image = np.random.rand(2, 3, 1).astype('f')
np_labels = np.array([[[1], [2], [3]], [[4], [5], [6]]])
height, width, depth = np_labels.shape
example = example_pb2.Example(features=feature_pb2.Features(
feature={
'image': self._EncodedFloatFeature(np_image),
'image/shape': self._EncodedInt64Feature(
np.array(np_image.shape)),
'labels': self._EncodedInt64Feature(np_labels),
'labels/height': self._EncodedInt64Feature(np.array([height])),
'labels/width': self._EncodedInt64Feature(np.array([width])),
'labels/depth': self._EncodedInt64Feature(np.array([depth])),
}))
serialized_example = example.SerializeToString()
with self.test_session():
serialized_example = array_ops.reshape(serialized_example,
shape=[])
keys_to_features = {
'image': parsing_ops.VarLenFeature(dtype=dtypes.float32),
'image/shape': parsing_ops.VarLenFeature(dtype=dtypes.int64),
'labels': parsing_ops.VarLenFeature(dtype=dtypes.int64),
'labels/height': parsing_ops.VarLenFeature(dtype=dtypes.int64),
'labels/width': parsing_ops.VarLenFeature(dtype=dtypes.int64),
'labels/depth': parsing_ops.VarLenFeature(dtype=dtypes.int64),
}
items_to_handlers = {
'image':
tfexample_decoder.Tensor('image', shape_keys='image/shape'),
'labels':
tfexample_decoder.Tensor('labels',
shape_keys=[
'labels/height', 'labels/width',
'labels/depth'
]),
}
decoder = tfexample_decoder.TFExampleDecoder(
keys_to_features, items_to_handlers)
[tf_image, tf_labels] = decoder.decode(serialized_example,
['image', 'labels'])
self.assertAllEqual(tf_image.eval(), np_image)
self.assertAllEqual(tf_labels.eval(), np_labels)
def get_split_genome(name, root_dir, reader_class=tf.TFRecordReader):
"""Produces data split.
Args:
name: split name
root_dir: dataset directory
reader_class: reader class
Returns:
Dataset
"""
file_pattern = os.path.join(root_dir, 'VG-%s_*' % name)
num_samples = SST_COUNTS[name]
keys_to_features = {
'image/encoded': tf.FixedLenFeature(
(), tf.string, default_value=''),
'image/format': tf.FixedLenFeature(
(), tf.string, default_value='jpeg'),
'image/shape': tf.VarLenFeature(dtype=tf.int64),
'image/relations/num': tf.VarLenFeature(dtype=tf.int64),
'image/relations/predicates_raw': tf.FixedLenFeature((), tf.string),
'image/relations/predicates': tf.VarLenFeature(dtype=tf.int64),
'image/relations/predicates_label': tf.VarLenFeature(dtype=tf.int64),
'image/relations/bboxes': tf.VarLenFeature(dtype=tf.int64),
'image/relations/objects': tf.VarLenFeature(dtype=tf.int64),
'image/relations/subjects': tf.VarLenFeature(dtype=tf.int64),
}
items_to_handlers = {
'image': tfexample_decoder.Image('image/encoded'),
'shape': tfexample_decoder.Tensor('image/shape'),
'num_relations': tfexample_decoder.Tensor('image/relations/num'),
'predicates_raw': tfexample_decoder.Tensor('image/relations/'
'predicates_raw'),
'predicates': tfexample_decoder.Tensor('image/relations/predicates'),
'predicates_label': tfexample_decoder.Tensor('image/relations/predicates_label'),
'bboxes': tfexample_decoder.Tensor('image/relations/bboxes'),
'objects': tfexample_decoder.Tensor('image/relations/objects'),
'subjects': tfexample_decoder.Tensor('image/relations/subjects')
}
decoder = tfexample_decoder.TFExampleDecoder(keys_to_features,
items_to_handlers)
return dataset.Dataset(
data_sources=file_pattern,
reader=reader_class,
decoder=decoder,
num_samples=num_samples,
items_to_descriptions={})
def testDecodeExampleWithBackupHandlerLookup(self):
example1 = example_pb2.Example(features=feature_pb2.Features(
feature={
'image/object/class/text':
self._BytesFeature(np.array(['cat', 'dog', 'guinea pig'])),
'image/object/class/label':
self._EncodedInt64Feature(np.array([42, 10, 900]))
}))
example2 = example_pb2.Example(features=feature_pb2.Features(
feature={
'image/object/class/text':
self._BytesFeature(np.array(['cat', 'dog', 'guinea pig'])),
}))
example3 = example_pb2.Example(features=feature_pb2.Features(
feature={
'image/object/class/label':
self._EncodedInt64Feature(np.array([42, 10, 901]))
}))
# 'dog' -> 0, 'guinea pig' -> 1, 'cat' -> 2
table = lookup_ops.index_table_from_tensor(
constant_op.constant(['dog', 'guinea pig', 'cat']))
keys_to_features = {
'image/object/class/text':
parsing_ops.VarLenFeature(dtypes.string),
'image/object/class/label':
parsing_ops.VarLenFeature(dtypes.int64),
}
backup_handler = tfexample_decoder.BackupHandler(
handler=tfexample_decoder.Tensor('image/object/class/label'),
backup=tfexample_decoder.LookupTensor('image/object/class/text',
table))
items_to_handlers = {
'labels': backup_handler,
}
decoder = tfexample_decoder.TFExampleDecoder(keys_to_features,
items_to_handlers)
obtained_class_ids_each_example = []
with self.test_session() as sess:
sess.run(lookup_ops.tables_initializer())
for example in [example1, example2, example3]:
serialized_example = array_ops.reshape(
example.SerializeToString(), shape=[])
obtained_class_ids_each_example.append(
decoder.decode(serialized_example)[0].eval())
self.assertAllClose([42, 10, 900], obtained_class_ids_each_example[0])
self.assertAllClose([2, 0, 1], obtained_class_ids_each_example[1])
self.assertAllClose([42, 10, 901], obtained_class_ids_each_example[2])
def testDecodeExampleWithInt64Tensor(self):
np_array = np.random.randint(1, 10, size=(2, 3, 1))
example = example_pb2.Example(features=feature_pb2.Features(
feature={
'array': self._EncodedInt64Feature(np_array),
}))
serialized_example = example.SerializeToString()
with self.test_session():
serialized_example = array_ops.reshape(serialized_example,
shape=[])
keys_to_features = {
'array': parsing_ops.FixedLenFeature(np_array.shape,
dtypes.int64)
}
items_to_handlers = {
'array': tfexample_decoder.Tensor('array'),
}
decoder = tfexample_decoder.TFExampleDecoder(
keys_to_features, items_to_handlers)
[tf_array] = decoder.decode(serialized_example, ['array'])
self.assertAllEqual(tf_array.eval(), np_array)
