Thinning of binary image based on stroke trend analysis
Feng Yun-qing · Optics and Precision Engineering · 2003
In order to overcome the drawbacks of thinning based on the axle wire of the original image and eight-neighborhood, which causes some straight-lines with noise to become curves, and stroke distortion at the cross or crotch of strokes, an improved thinning algorithm based on stroke trend analysis is proposed for binary image by analyzing and improving Zhang thinning algorithm, and it can make a skeleton with strictly eight-connected structure available to keep a good symmetry, and control the deformation at the cross or crotch of strakes so that each image can be quickly skeletonized more perfectly.The algorithm proposed in this paper has been successfully applied to vehicle license identifying system.