opencv笔记（二十一）——骨骼去毛刺

图像细化多用于机器人视觉，OCR字符识别等领域，细化后的图像经过去毛刺就成为了我们常说的图像的骨架。

　该图像细化代码依据论文： T. Y. ZHANG and C. Y. SUEN  A Fast Parallel Algorithm for Thinning Digital Patterns

代码如下：

void ThinSubiteration1(Mat & pSrc, Mat & pDst) {
        int rows = pSrc.rows;
        int cols = pSrc.cols;
        pSrc.copyTo(pDst);
        for(int i = 0; i < rows; i++) {
                for(int j = 0; j < cols; j++) {
                        if(pSrc.at<float>(i, j) == 1.0f) {
                                /// get 8 neighbors
                                /// calculate C(p)
                                int neighbor0 = (int) pSrc.at<float>( i-1, j-1);
                                int neighbor1 = (int) pSrc.at<float>( i-1, j);
                                int neighbor2 = (int) pSrc.at<float>( i-1, j+1);
                                int neighbor3 = (int) pSrc.at<float>( i, j+1);
                                int neighbor4 = (int) pSrc.at<float>( i+1, j+1);
                                int neighbor5 = (int) pSrc.at<float>( i+1, j);
                                int neighbor6 = (int) pSrc.at<float>( i+1, j-1);
                                int neighbor7 = (int) pSrc.at<float>( i, j-1);
                                int C = int(~neighbor1 & ( neighbor2 | neighbor3)) +
                                                 int(~neighbor3 & ( neighbor4 | neighbor5)) +
                                                 int(~neighbor5 & ( neighbor6 | neighbor7)) +
                                                 int(~neighbor7 & ( neighbor0 | neighbor1));
    

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