128 lines
5.6 KiB
Python
128 lines
5.6 KiB
Python
# Copyright (c) OpenMMLab. All rights reserved.
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import pytest
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import torch
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from mmdet.core.bbox.coder import (DeltaXYWHBBoxCoder, DistancePointBBoxCoder,
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TBLRBBoxCoder, YOLOBBoxCoder)
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def test_yolo_bbox_coder():
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coder = YOLOBBoxCoder()
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bboxes = torch.Tensor([[-42., -29., 74., 61.], [-10., -29., 106., 61.],
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[22., -29., 138., 61.], [54., -29., 170., 61.]])
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pred_bboxes = torch.Tensor([[0.4709, 0.6152, 0.1690, -0.4056],
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[0.5399, 0.6653, 0.1162, -0.4162],
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[0.4654, 0.6618, 0.1548, -0.4301],
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[0.4786, 0.6197, 0.1896, -0.4479]])
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grid_size = 32
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expected_decode_bboxes = torch.Tensor(
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[[-53.6102, -10.3096, 83.7478, 49.6824],
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[-15.8700, -8.3901, 114.4236, 50.9693],
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[11.1822, -8.0924, 146.6034, 50.4476],
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[41.2068, -8.9232, 181.4236, 48.5840]])
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assert expected_decode_bboxes.allclose(
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coder.decode(bboxes, pred_bboxes, grid_size))
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def test_delta_bbox_coder():
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coder = DeltaXYWHBBoxCoder()
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rois = torch.Tensor([[0., 0., 1., 1.], [0., 0., 1., 1.], [0., 0., 1., 1.],
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[5., 5., 5., 5.]])
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deltas = torch.Tensor([[0., 0., 0., 0.], [1., 1., 1., 1.],
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[0., 0., 2., -1.], [0.7, -1.9, -0.5, 0.3]])
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expected_decode_bboxes = torch.Tensor([[0.0000, 0.0000, 1.0000, 1.0000],
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[0.1409, 0.1409, 2.8591, 2.8591],
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[0.0000, 0.3161, 4.1945, 0.6839],
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[5.0000, 5.0000, 5.0000, 5.0000]])
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out = coder.decode(rois, deltas, max_shape=(32, 32))
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assert expected_decode_bboxes.allclose(out, atol=1e-04)
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out = coder.decode(rois, deltas, max_shape=torch.Tensor((32, 32)))
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assert expected_decode_bboxes.allclose(out, atol=1e-04)
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batch_rois = rois.unsqueeze(0).repeat(2, 1, 1)
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batch_deltas = deltas.unsqueeze(0).repeat(2, 1, 1)
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batch_out = coder.decode(batch_rois, batch_deltas, max_shape=(32, 32))[0]
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assert out.allclose(batch_out)
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batch_out = coder.decode(
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batch_rois, batch_deltas, max_shape=[(32, 32), (32, 32)])[0]
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assert out.allclose(batch_out)
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# test max_shape is not equal to batch
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with pytest.raises(AssertionError):
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coder.decode(
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batch_rois, batch_deltas, max_shape=[(32, 32), (32, 32), (32, 32)])
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rois = torch.zeros((0, 4))
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deltas = torch.zeros((0, 4))
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out = coder.decode(rois, deltas, max_shape=(32, 32))
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assert rois.shape == out.shape
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# test add_ctr_clamp
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coder = DeltaXYWHBBoxCoder(add_ctr_clamp=True, ctr_clamp=2)
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rois = torch.Tensor([[0., 0., 6., 6.], [0., 0., 1., 1.], [0., 0., 1., 1.],
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[5., 5., 5., 5.]])
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deltas = torch.Tensor([[1., 1., 2., 2.], [1., 1., 1., 1.],
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[0., 0., 2., -1.], [0.7, -1.9, -0.5, 0.3]])
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expected_decode_bboxes = torch.Tensor([[0.0000, 0.0000, 27.1672, 27.1672],
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[0.1409, 0.1409, 2.8591, 2.8591],
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[0.0000, 0.3161, 4.1945, 0.6839],
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[5.0000, 5.0000, 5.0000, 5.0000]])
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out = coder.decode(rois, deltas, max_shape=(32, 32))
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assert expected_decode_bboxes.allclose(out, atol=1e-04)
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def test_tblr_bbox_coder():
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coder = TBLRBBoxCoder(normalizer=15.)
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rois = torch.Tensor([[0., 0., 1., 1.], [0., 0., 1., 1.], [0., 0., 1., 1.],
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[5., 5., 5., 5.]])
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deltas = torch.Tensor([[0., 0., 0., 0.], [1., 1., 1., 1.],
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[0., 0., 2., -1.], [0.7, -1.9, -0.5, 0.3]])
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expected_decode_bboxes = torch.Tensor([[0.5000, 0.5000, 0.5000, 0.5000],
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[0.0000, 0.0000, 12.0000, 13.0000],
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[0.0000, 0.5000, 0.0000, 0.5000],
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[5.0000, 5.0000, 5.0000, 5.0000]])
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out = coder.decode(rois, deltas, max_shape=(13, 12))
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assert expected_decode_bboxes.allclose(out)
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out = coder.decode(rois, deltas, max_shape=torch.Tensor((13, 12)))
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assert expected_decode_bboxes.allclose(out)
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batch_rois = rois.unsqueeze(0).repeat(2, 1, 1)
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batch_deltas = deltas.unsqueeze(0).repeat(2, 1, 1)
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batch_out = coder.decode(batch_rois, batch_deltas, max_shape=(13, 12))[0]
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assert out.allclose(batch_out)
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batch_out = coder.decode(
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batch_rois, batch_deltas, max_shape=[(13, 12), (13, 12)])[0]
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assert out.allclose(batch_out)
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# test max_shape is not equal to batch
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with pytest.raises(AssertionError):
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coder.decode(batch_rois, batch_deltas, max_shape=[(13, 12)])
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rois = torch.zeros((0, 4))
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deltas = torch.zeros((0, 4))
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out = coder.decode(rois, deltas, max_shape=(32, 32))
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assert rois.shape == out.shape
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def test_distance_point_bbox_coder():
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coder = DistancePointBBoxCoder()
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points = torch.Tensor([[74., 61.], [-29., 106.], [138., 61.], [29., 170.]])
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gt_bboxes = torch.Tensor([[74., 61., 75., 62.], [0., 104., 0., 112.],
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[100., 90., 100., 120.], [0., 120., 100., 120.]])
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expected_distance = torch.Tensor([[0., 0., 1., 1.], [0., 2., 29., 6.],
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[38., 0., 0., 50.], [29., 50., 50., 0.]])
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out_distance = coder.encode(points, gt_bboxes, max_dis=50, eps=0)
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assert expected_distance.allclose(out_distance)
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distance = torch.Tensor([[0., 0, 1., 1.], [1., 2., 10., 6.],
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[22., -29., 138., 61.], [54., -29., 170., 61.]])
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out_bbox = coder.decode(points, distance, max_shape=(120, 100))
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assert gt_bboxes.allclose(out_bbox)
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