船用缸套材料磨合表面评价的Ostu图像分割研究

Based on Ostu threshold image-segementation, the surfaces of marine cylinder material, which were tested in simulated running-in under different rotation in CD40 lubricant, were analyzed as binary image. The ratio of high gray scale of the image, R was utilized to appraise the quality of running-in surface. Different brightness and contrast were simulated to validate the stability of the method. It was shown that the binary image-segmentation based on Ostu theory can be used to appraise the running-in surface semiquantitatively or quantitatively, and the brightness and contrast of image have little influence on the appraising result.