official/projects/pointpillars/modeling/featurizers_test.py
# Copyright 2024 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.
"""Tests for backbones."""
from absl.testing import parameterized
import tensorflow as tf, tf_keras
from official.projects.pointpillars.modeling import featurizers
class FeaturizerTest(parameterized.TestCase, tf.test.TestCase):
@parameterized.parameters(
([32, 32], [16, 4, 2], 4, 2, 1),
([32, 16], [1, 3, 1], 2, 2, 3),
)
def test_network_creation(self, image_size, pillars_size, train_batch_size,
eval_batch_size, num_blocks):
num_channels = 3
h, w = image_size
n, _, _ = pillars_size
featurizer = featurizers.Featurizer(image_size, pillars_size,
train_batch_size, eval_batch_size,
num_blocks, num_channels)
# Train mode.
pillars = tf_keras.Input(shape=pillars_size, batch_size=train_batch_size)
indices = tf_keras.Input(
shape=[n, 2], batch_size=train_batch_size, dtype=tf.int32)
image = featurizer(pillars, indices, training=True)
self.assertAllEqual([train_batch_size, h, w, num_channels],
image.shape.as_list())
# Evaluation mode.
pillars = tf_keras.Input(shape=pillars_size, batch_size=eval_batch_size)
indices = tf_keras.Input(
shape=[n, 2], batch_size=eval_batch_size, dtype=tf.int32)
image = featurizer(pillars, indices, training=False)
self.assertAllEqual([eval_batch_size, h, w, num_channels],
image.shape.as_list())
# Test mode, batch size must be 1.
pillars = tf_keras.Input(shape=pillars_size, batch_size=1)
indices = tf_keras.Input(
shape=[n, 2], batch_size=1, dtype=tf.int32)
image = featurizer(pillars, indices, training=None)
self.assertAllEqual([1, h, w, num_channels],
image.shape.as_list())
def test_serialization(self):
kwargs = dict(
image_size=[4, 4],
pillars_size=[4, 5, 6],
train_batch_size=4,
eval_batch_size=2,
num_blocks=3,
num_channels=4,
kernel_regularizer=None,
)
net = featurizers.Featurizer(**kwargs)
expected_config = kwargs
self.assertEqual(net.get_config(), expected_config)
new_net = featurizers.Featurizer.from_config(net.get_config())
self.assertAllEqual(net.get_config(), new_net.get_config())
if __name__ == '__main__':
tf.test.main()