def test_build_grid_anchor_generator_with_non_default_parameters(self):
anchor_generator_text_proto = """
grid_anchor_generator {
height: 128
width: 512
height_stride: 10
width_stride: 20
height_offset: 30
width_offset: 40
scales: [0.4, 2.2]
aspect_ratios: [0.3, 4.5]
}
"""
anchor_generator_proto = anchor_generator_pb2.AnchorGenerator()
text_format.Merge(anchor_generator_text_proto, anchor_generator_proto)
anchor_generator_object = anchor_generator_builder.build(
anchor_generator_proto)
self.assertTrue(
isinstance(anchor_generator_object,
grid_anchor_generator.GridAnchorGenerator))
self.assert_almost_list_equal(anchor_generator_object._scales,
[0.4, 2.2])
self.assert_almost_list_equal(anchor_generator_object._aspect_ratios,
[0.3, 4.5])
with self.test_session() as sess:
base_anchor_size, anchor_offset, anchor_stride = sess.run([
anchor_generator_object._base_anchor_size,
anchor_generator_object._anchor_offset,
anchor_generator_object._anchor_stride
])
self.assertAllEqual(anchor_offset, [30, 40])
self.assertAllEqual(anchor_stride, [10, 20])
self.assertAllEqual(base_anchor_size, [128, 512])
def test_build_ssd_anchor_generator_with_defaults(self):
anchor_generator_text_proto = """
ssd_anchor_generator {
aspect_ratios: [1.0]
}
"""
anchor_generator_proto = anchor_generator_pb2.AnchorGenerator()
text_format.Merge(anchor_generator_text_proto, anchor_generator_proto)
anchor_generator_object = anchor_generator_builder.build(
anchor_generator_proto)
self.assertTrue(
isinstance(
anchor_generator_object,
multiple_grid_anchor_generator.MultipleGridAnchorGenerator))
for actual_scales, expected_scales in zip(
list(anchor_generator_object._scales), [(0.1, 0.2, 0.2),
(0.35, 0.418),
(0.499, 0.570),
(0.649, 0.721),
(0.799, 0.871),
(0.949, 0.974)]):
self.assert_almost_list_equal(expected_scales,
actual_scales,
delta=1e-2)
for actual_aspect_ratio, expected_aspect_ratio in zip(
list(anchor_generator_object._aspect_ratios),
[(1.0, 2.0, 0.5)] + 5 * [(1.0, 1.0)]):
self.assert_almost_list_equal(expected_aspect_ratio,
actual_aspect_ratio)
with self.test_session() as sess:
base_anchor_size = sess.run(
anchor_generator_object._base_anchor_size)
self.assertAllClose(base_anchor_size, [1.0, 1.0])
def test_raise_value_error_on_empty_anchor_genertor(self):
anchor_generator_text_proto = """
"""
anchor_generator_proto = anchor_generator_pb2.AnchorGenerator()
text_format.Merge(anchor_generator_text_proto, anchor_generator_proto)
with self.assertRaises(ValueError):
anchor_generator_builder.build(anchor_generator_proto)
def test_build_ssd_anchor_generator_with_non_default_parameters(self):
anchor_generator_text_proto = """
ssd_anchor_generator {
num_layers: 2
min_scale: 0.3
max_scale: 0.8
aspect_ratios: [2.0]
height_stride: 16
height_stride: 32
width_stride: 20
width_stride: 30
height_offset: 8
height_offset: 16
width_offset: 0
width_offset: 10
}
"""
anchor_generator_proto = anchor_generator_pb2.AnchorGenerator()
text_format.Merge(anchor_generator_text_proto, anchor_generator_proto)
anchor_generator_object = anchor_generator_builder.build(
anchor_generator_proto)
self.assertTrue(
isinstance(
anchor_generator_object,
multiple_grid_anchor_generator.MultipleGridAnchorGenerator))
for actual_scales, expected_scales in zip(
list(anchor_generator_object._scales), [(0.1, 0.3, 0.3),
(0.8, 0.894)]):
self.assert_almost_list_equal(expected_scales,
actual_scales,
delta=1e-2)
for actual_aspect_ratio, expected_aspect_ratio in zip(
list(anchor_generator_object._aspect_ratios), [(1.0, 2.0, 0.5),
(2.0, 1.0)]):
self.assert_almost_list_equal(expected_aspect_ratio,
actual_aspect_ratio)
for actual_strides, expected_strides in zip(
list(anchor_generator_object._anchor_strides), [(16, 20),
(32, 30)]):
self.assert_almost_list_equal(expected_strides, actual_strides)
for actual_offsets, expected_offsets in zip(
list(anchor_generator_object._anchor_offsets), [(8, 0),
(16, 10)]):
self.assert_almost_list_equal(expected_offsets, actual_offsets)
with self.test_session() as sess:
base_anchor_size = sess.run(
anchor_generator_object._base_anchor_size)
self.assertAllClose(base_anchor_size, [1.0, 1.0])
def test_build_ssd_anchor_generator_with_custom_interpolated_scale(self):
anchor_generator_text_proto = """
ssd_anchor_generator {
aspect_ratios: [0.5]
interpolated_scale_aspect_ratio: 0.5
reduce_boxes_in_lowest_layer: false
}
"""
anchor_generator_proto = anchor_generator_pb2.AnchorGenerator()
text_format.Merge(anchor_generator_text_proto, anchor_generator_proto)
anchor_generator_object = anchor_generator_builder.build(
anchor_generator_proto)
self.assertTrue(
isinstance(
anchor_generator_object,
multiple_grid_anchor_generator.MultipleGridAnchorGenerator))
for actual_aspect_ratio, expected_aspect_ratio in zip(
list(anchor_generator_object._aspect_ratios),
6 * [(0.5, 0.5)]):
self.assert_almost_list_equal(expected_aspect_ratio,
actual_aspect_ratio)
def test_build_grid_anchor_generator_with_defaults(self):
anchor_generator_text_proto = """
grid_anchor_generator {
}
"""
anchor_generator_proto = anchor_generator_pb2.AnchorGenerator()
text_format.Merge(anchor_generator_text_proto, anchor_generator_proto)
anchor_generator_object = anchor_generator_builder.build(
anchor_generator_proto)
self.assertTrue(
isinstance(anchor_generator_object,
grid_anchor_generator.GridAnchorGenerator))
self.assertListEqual(anchor_generator_object._scales, [])
self.assertListEqual(anchor_generator_object._aspect_ratios, [])
with self.test_session() as sess:
base_anchor_size, anchor_offset, anchor_stride = sess.run([
anchor_generator_object._base_anchor_size,
anchor_generator_object._anchor_offset,
anchor_generator_object._anchor_stride
])
self.assertAllEqual(anchor_offset, [0, 0])
self.assertAllEqual(anchor_stride, [16, 16])
self.assertAllEqual(base_anchor_size, [256, 256])
def test_build_ssd_anchor_generator_with_custom_scales(self):
anchor_generator_text_proto = """
ssd_anchor_generator {
aspect_ratios: [1.0]
scales: [0.1, 0.15, 0.2, 0.4, 0.6, 0.8]
reduce_boxes_in_lowest_layer: false
}
"""
anchor_generator_proto = anchor_generator_pb2.AnchorGenerator()
text_format.Merge(anchor_generator_text_proto, anchor_generator_proto)
anchor_generator_object = anchor_generator_builder.build(
anchor_generator_proto)
self.assertTrue(
isinstance(
anchor_generator_object,
multiple_grid_anchor_generator.MultipleGridAnchorGenerator))
for actual_scales, expected_scales in zip(
list(anchor_generator_object._scales),
[(0.1, math.sqrt(0.1 * 0.15)), (0.15, math.sqrt(0.15 * 0.2)),
(0.2, math.sqrt(0.2 * 0.4)), (0.4, math.sqrt(0.4 * 0.6)),
(0.6, math.sqrt(0.6 * 0.8)), (0.8, math.sqrt(0.8 * 1.0))]):
self.assert_almost_list_equal(expected_scales,
actual_scales,
delta=1e-2)