Discrete multidirectional geotechnical material image segmentation method considering regional features

The invention discloses a discrete multidirectional geotechnical material image segmentation method considering regional features, and belongs to the technical field of geotechnical material image processing, and the method comprises the following steps: carrying out the graying processing of a geotechnical material two-dimensional image, and obtaining a gray image; calculating gradients of the gray level image in the horizontal direction and the vertical direction through a first-order partial derivative, and obtaining gradient information of each row and each column in the gray level image; and determining a segmentation threshold according to the gradient information, and performing discrete segmentation on the grayscale image based on the segmentation threshold to obtain a geotechnical material pore segmentation map. According to the method, more accurate and comprehensive quantification is carried out on a special structure of a geotechnical material, the image can be effectively segmented into regions w