learnopencv/NonPhotorealisticRendering/npr.cpp

/* 
 * OpenCV Non-Photorealistic Rendering C++ Example
 * 
 * Copyright 2015 by Satya Mallick <spmallick@gmail.com> 
 *
 */

#include "opencv2/opencv.hpp"

using namespace cv;
using namespace std;

int main(int argc, char* argv[])
{

    // Read image
	Mat im = imread("cow.jpg");
	Mat imout, imout_gray; 

    // Edge preserving filter with two different flags.
	edgePreservingFilter(im, imout, RECURS_FILTER);
	imwrite("edge-preserving-recursive-filter.jpg", imout); 

	edgePreservingFilter(im, imout, NORMCONV_FILTER);
	imwrite("edge-preserving-normalized-convolution-filter.jpg", imout); 

    // Detail enhance filter
	detailEnhance(im,imout);
	imwrite("detail-enhance.jpg", imout); 

    // Pencil sketch filter
	pencilSketch(im, imout_gray, imout);
	imwrite("pencil-sketch.jpg", imout_gray);

    // Stylization filter
	stylization(im,imout);
	imwrite("stylization.jpg", imout);
}