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校正后的图片部分像素不见 #9

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Suarez0124 opened this issue Jun 8, 2022 · 1 comment
Open

校正后的图片部分像素不见 #9

Suarez0124 opened this issue Jun 8, 2022 · 1 comment

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@Suarez0124
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def _get_camera_mat_dst(self, camera_mat):
    camera_mat_dst = camera_mat.copy()
    camera_mat_dst[0][0] *= args.FOCAL_SCALE
    camera_mat_dst[1][1] *= args.FOCAL_SCALE
    camera_mat_dst[0][2] = args.FRAME_WIDTH / 2 * args.SIZE_SCALE
    camera_mat_dst[1][2] = args.FRAME_HEIGHT / 2 * args.SIZE_SCALE
    return camera_mat_dst

请问这部分为什么改变焦距与光轴获得新的内参矩阵,我没调用这个函数,直接用原内参,就少了部分像素。
然后我新加了cv2.getOptimalNewCameraMatrix这个获取新的内参矩阵,设置α值
newCameraMatrix, roi = cv2.getOptimalNewCameraMatrix(camera_mat,
dist_coeff,
(int(args.width), int(args.height)),
0.13)
这个函数与博主的函数是同一个原理吗?

@Quentin-xue
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image

一样的,根据我的测试

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