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42 lines
1.5 KiB
Python
42 lines
1.5 KiB
Python
import cv2
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import numpy as np
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from unittest import TestCase, main
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from frigate.util import yuv_region_2_rgb
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class TestYuvRegion2RGB(TestCase):
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def setUp(self):
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self.bgr_frame = np.zeros((100, 200, 3), np.uint8)
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self.bgr_frame[:] = (0, 0, 255)
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self.bgr_frame[5:55, 5:55] = (255, 0, 0)
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# cv2.imwrite(f"bgr_frame.jpg", self.bgr_frame)
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self.yuv_frame = cv2.cvtColor(self.bgr_frame, cv2.COLOR_BGR2YUV_I420)
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def test_crop_yuv(self):
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cropped = yuv_region_2_rgb(self.yuv_frame, (10, 10, 50, 50))
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# ensure the upper left pixel is blue
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assert np.all(cropped[0, 0] == [0, 0, 255])
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def test_crop_yuv_out_of_bounds(self):
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cropped = yuv_region_2_rgb(self.yuv_frame, (0, 0, 200, 200))
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# cv2.imwrite(f"cropped.jpg", cv2.cvtColor(cropped, cv2.COLOR_RGB2BGR))
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# ensure the upper left pixel is red
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# the yuv conversion has some noise
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assert np.all(cropped[0, 0] == [255, 1, 0])
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# ensure the bottom right is black
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assert np.all(cropped[199, 199] == [0, 0, 0])
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def test_crop_yuv_portrait(self):
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bgr_frame = np.zeros((1920, 1080, 3), np.uint8)
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bgr_frame[:] = (0, 0, 255)
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bgr_frame[5:55, 5:55] = (255, 0, 0)
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# cv2.imwrite(f"bgr_frame.jpg", self.bgr_frame)
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yuv_frame = cv2.cvtColor(bgr_frame, cv2.COLOR_BGR2YUV_I420)
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cropped = yuv_region_2_rgb(yuv_frame, (0, 852, 648, 1500))
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# cv2.imwrite(f"cropped.jpg", cv2.cvtColor(cropped, cv2.COLOR_RGB2BGR))
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if __name__ == "__main__":
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main(verbosity=2)
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