X-shaped corner extraction method based on image contour
A corner extraction and image contour technology, applied in the field of visual inspection, can solve the problems of missed detection, multiple inspections, multiple false corners, complex image scenes, etc., to improve the success rate, reduce the influence of illumination, and improve coordinate accuracy Effect
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[0028] An embodiment of the present invention will be further described below in conjunction with the accompanying drawings.
[0029] In the embodiment of the present invention, the X-shaped corner point extraction method based on the image contour, such as figure 1 shown, including the following steps:
[0030] Step 1, obtain the image to be processed, and use the Harris corner point extraction method to extract all Harris corner points in the image;
[0031] In the example of the present invention, such as figure 2 The image to be processed is shown, and the coordinate position of the X-shaped corner is determined by the Harris operator. The specific steps are as follows:
[0032] Establish a coordinate system with any point in the image as the origin, preferably any one of the four corners in the image as the origin, wherein the horizontal direction of the image is the X axis, the vertical direction of the image is the Y axis, and the process is performed by the Harris o...
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