Abstract: This paper reviews the developments of the mathematical morphology and image segmentation in the processing of the crack in the soil mass. In the area of mathematical morphology, the development of the noise filtering, skeleton extraction and reconstruction methods are described; in the area of image segmentation, the methods based on the threshold, edge detection, clustering and zoning are introduced. Finally, the prospects of these image processing methods are discussed.

Key words: Soil Mass, Crack, Image Processing