Image correction method and device

By defining a preset area in the image acquisition device and calculating the motion distance to determine the smoothing angle, the trapezoidal distortion problem caused by camera tilt is solved, improving the OCR recognition accuracy and document positioning precision.

CN120932244APending Publication Date: 2025-11-11HEFEI IFLYTEK TOYCLOUD TECH
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Patent Information

Application Number
CN202511119042.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-11
Publication Date
2025-11-11

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Abstract

The invention provides an image correction method and device, and the method comprises the steps: determining at least two preset image regions in a current frame image; calculating the movement distance of each image area relative to the previous frame of image; determining a target smoothing angle of the current frame image based on the motion distance of each image area; according to the target smoothing angle, determining a transformation parameter used for correcting the current frame image; and correcting the current frame image by using the transformation parameter to generate a corrected image. According to the image correction method and device provided by the invention, the problems that the accuracy of subsequent OCR (Optical Character Recognition) character recognition is reduced due to trapezoidal distortion of the image, the positioning of key fields in the document is deviated and the like are solved.
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Citation Information

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