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32 lines
865 B
Python
32 lines
865 B
Python
import numpy as np
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from pipeline.frames import temporal_median3, box_blur3, binarize, pack_lsb
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def test_temporal_median_removes_single_frame_flash():
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a = np.zeros((4, 4), dtype=np.uint8)
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b = np.zeros((4, 4), dtype=np.uint8)
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b[1, 1] = 255
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c = np.zeros((4, 4), dtype=np.uint8)
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out = temporal_median3([a, b, c])
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assert out[1, 1] == 0
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def test_pack_lsb_is_leftmost_pixel_bit_zero():
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mask = np.zeros((1, 8), dtype=bool)
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mask[0, 0] = True
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assert pack_lsb(mask) == b"\x01"
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mask[0, 7] = True
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assert pack_lsb(mask) == b"\x81"
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def test_binarize_black_is_true():
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gray = np.array([[0, 255]], dtype=np.uint8)
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assert binarize(gray).tolist() == [[True, False]]
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def test_box_blur_softens_a_single_pixel():
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gray = np.zeros((3, 3), dtype=np.uint8)
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gray[1, 1] = 9
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out = box_blur3(gray)
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assert out[1, 1] == 1
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