图像扭曲之锯齿

源码：

void wave_sawtooth(cv::Mat& src,cv::Mat& dst,double amplitude,double wavelength)
{dst.create(src.rows, src.cols, CV_8UC3);dst.setTo(0);double xAmplitude = amplitude;double yAmplitude = amplitude;int xWavelength = wavelength;int yWavelength = wavelength;for (int h = 0; h < dst.rows; h ++) {double fh = 1.0 * (h % yWavelength) / yWavelength;fh = h + yAmplitude * fh;int nh = floor(fh);if (nh < 0 || nh > dst.rows - 1)nh = h;for (int w = 0; w < dst.cols; w ++) {double fw  = 1.0 * (w % xWavelength) / xWavelength;fw = w + xAmplitude * fw;int nw = floor(fw);if (nw < 0 || nw > dst.cols - 1)nw = w;dst.at<Vec3b>(h, w)[0] = src.at<Vec3b>(nh, nw)[0];dst.at<Vec3b>(h, w)[1] = src.at<Vec3b>(nh, nw)[1];dst.at<Vec3b>(h, w)[2] = src.at<Vec3b>(nh, nw)[2];}}
}

源图像：

 当amplitude=50，wavelength = 50时的效果：