METHOD AND SYSTEM FOR CCTV RADIAL DISTORTION ESTIMATION WITH LOW-COMPLEXITY

    公开(公告)号:US20250069207A1

    公开(公告)日:2025-02-27

    申请号:US18781142

    申请日:2024-07-23

    Abstract: There are provided a method and a system for CCTV radial distortion estimation with low-complexity. An image distortion estimation method according to an embodiment includes: adding a certain distortion to an inputted image; detecting outlines from the image to which the distortion is added; detecting straight lines from the detected outlines; calculating a sum of the detected straight lines; performing the above operations N times, and determining parameters of an objective function by fitting an ‘objective function resulting from modeling of a sum of detected straight lines caused by an added distortion’ to the N distortions and the N sums; and estimating a distortion on the image by using the objective function the parameters of which are determined. Accordingly, the method does not need a cumbersome process since a separate reference image is not used, and is performed fast due to low-complexity of computation and less resources are required, and furthermore, relatively accurate distortion estimation is possible only with one image.

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