Edge detection and following algorithm and Hough transform are particularly applied in automatic recognition of vertical fracture and incline fracture. 针对裂缝的两种常见的形态:过井裂缝和垂直裂缝,分别采用了Hough变换和轮廓提取与跟踪算法对裂缝进行自动识别;
Using trademark image edge detection and contour following, extract each child contour feature points for the extraction of information, the contour feature information use the run-length coding compression algorithm to feature information further compression. 2. 对商标图像进行边缘检测,轮廓跟踪,然后提取每个子轮廓的特征点信息,对提取的轮廓特征信息采用游程编码压缩算法对特征信息进一步压缩。