JCIPRNET
Method of separating, identifying and characterizing cracks in 3D space
The present invention discloses a method of separating, identifying and characterizing cracks in rocks or other materials in three-dimensional (3D) space, which processes as follows to a volumetric digital image: 1) preprocessing digital image; 2) statistically analyzing basic information of the image including porosity, connectivity of each pore, and position, size, orientation and anisotropy of each pore-structure; 3) filtration: removing non-crack structures; 4) smoothening: smoothening and mending the image; 5) thinning: thinning the void structure into a thickness d (2 to 3 voxels recommended) in a direction with shortest extension; 6) separation: separating intersected cracks in a crack network by breaking the connections; 7) combination: combining those elongated cracks that are disconnected in the last step, and restoring cracks to the thickness before thinning, and eventually giving out the characterization of the cracks.
SUN YAT-SEN UNIVERSITY
G G G G
G01N G06T G01N G06T
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Jincheng Jie
Huang Liu