A table frame line detection method based on region growth

[0036] The present invention is mainly based on processing methods such as image tilt correction, image preprocessing, adaptive binarization processing and line search based on region generation.

[0037] For a picture of a financial statement downloaded from the server, specifically:

[0038] First of all, it is necessary to perform image tilt correction processing on the obtained financial statement picture, as follows:

[0039] S2-1. In order to reduce the amount of calculation for searching for a straight line, use the canny edge detection algorithm to perform edge detection on the financial statement picture to obtain an edge detection map;

[0040] S2-2, using hough transform to detect straight lines on the edge detection map;

[0041] S2-3. Screen the straight lines that meet the conditions, and record their inclination angles;

[0042] S2-4. Use a voting mechanism to determine the tilt angle with the most votes as the tilt angle of the image;

[0043] S2-5. Using affin