# Copyright 2017 The TensorFlow Authors. All Rights Reserved.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

# ==============================================================================

"""Tensorflow Example proto decoder for object detection.

A decoder to decode string tensors containing serialized tensorflow.Example

protos for object detection.

"""

from __future__ import absolute_import

from __future__ import division

from __future__ import print_function

import enum

import numpy as np

from six.moves import zip

import tensorflow.compat.v1 as tf

from tf_slim import tfexample_decoder as slim_example_decoder

from object_detection.core import data_decoder

from object_detection.core import standard_fields as fields

from object_detection.protos import input_reader_pb2

from object_detection.utils import label_map_util

from object_detection.utils import shape_utils

# pylint: disable=g-import-not-at-top

try:

from tensorflow.contrib import lookup as contrib_lookup

except ImportError:

# TF 2.0 doesn't ship with contrib.

pass

# pylint: enable=g-import-not-at-top

_LABEL_OFFSET = 1

class Visibility(enum.Enum):

VISIBLE = 2

class _ClassTensorHandler(slim_example_decoder.Tensor):

self._display_name_to_id_table.lookup(unmapped_tensor))

class TfExampleDecoder(data_decoder.DataDecoder):

return new_object_field