Die forging rigging die crack defect detection method based on image processing

The invention relates to the technical field of image processing crack detection, in particular to a die forging rigging die crack defect detection method based on image processing, and the method comprises the steps: constructing a region window and a gray scale transfer sequence of each pixel point of a forging die gray scale image; calculating a crack gray scale transfer index of each pixel point; constructing a connected domain gray scale feature sequence and a connected domain change feature sequence of each pixel point according to the gray scale of the pixel point in the region window of each pixel point so as to calculate a crack segmentation feature coefficient of each pixel point, and constructing an edge continuous feature sequence of the region window of each pixel point; and calculating an edge disorder characteristic index and an edge continuous characteristic index of the edge pixel points, finally obtaining a crack zigzag characteristic coefficient of each pixel point, obtaining a mold crack s