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OpenCV實(shí)現(xiàn)圖像轉(zhuǎn)換為漫畫(huà)效果

更新時(shí)間：2020年08月19日 15:03:03 作者：瘋狂的小豬oO

這篇文章主要為大家詳細(xì)介紹了OpenCV實(shí)現(xiàn)圖像轉(zhuǎn)換為漫畫(huà)效果，文中示例代碼介紹的非常詳細(xì)，具有一定的參考價(jià)值，感興趣的小伙伴們可以參考一下

本文實(shí)例為大家分享了OpenCV實(shí)現(xiàn)圖像轉(zhuǎn)換為漫畫(huà)的具體代碼，供大家參考，具體內(nèi)容如下

From 《OpenCV By Example》

1、先canny提取圖像的邊緣并強(qiáng)化，翻轉(zhuǎn)邊緣為黑色，將像素值轉(zhuǎn)換為0-1的值
2、將圖像進(jìn)行雙邊濾波處理，然后將像素值縮短為每10個(gè)灰度級(jí)為一個(gè)值
3、將前兩步得到的結(jié)果相乘，顯示結(jié)果

#include <iostream>
 
using namespace std;
 
#include "opencv2/core.hpp"
#include "opencv2/highgui.hpp"
#include "opencv2/imgproc.hpp"
 
using namespace cv;
 
int main()
{
 Mat img = imread("1.jpg");
 float radius = img.cols > img.rows ? (img.rows / 3) : (img.cols / 3);
 
 
 const double exponential_e = exp(1.0);
 /** EDgES **/
 // Apply median filter to remove possible noise
 Mat imgMedian;
 medianBlur(img, imgMedian, 7);
 // Detect edges with canny
 Mat imgCanny;
 Canny(imgMedian, imgCanny, 50, 150);
 // Dilate the edges
 Mat kernel = getStructuringElement(MORPH_RECT, Size(2, 2));
 dilate(imgCanny, imgCanny, kernel);
 
 // Scale edges values to 1 and invert values
 imgCanny = imgCanny / 255;
 imgCanny = 1 - imgCanny;
 // Use float values to allow multiply between 0 and 1
 Mat imgCannyf;
 imgCanny.convertTo(imgCannyf, CV_32FC3);
 // Blur the edgest to do smooth effect
 blur(imgCannyf, imgCannyf, Size(5, 5));
 
 /** COLOR **/
 // Apply bilateral filter to homogenizes color
 Mat imgBF;
 bilateralFilter(img, imgBF, 9, 150.0, 150.0);
 // truncate colors
 Mat result = imgBF / 25;
 result = result * 25;
 /** MERgES COLOR + EDgES **/
 // Create a 3 channles for edges
 Mat imgCanny3c;
 Mat cannyChannels[] = { imgCannyf, imgCannyf, imgCannyf };
 merge(cannyChannels, 3, imgCanny3c);
 // Convert color result to float
 Mat resultf;
 result.convertTo(resultf, CV_32FC3);
 // Multiply color and edges matrices
// cout << imgCanny3c << endl;
 multiply(resultf, imgCanny3c, resultf);
// cout << resultf << endl;
 // convert to 8 bits color
 resultf.convertTo(result, CV_8UC3);
 // Show image
 imshow("Result", result);
 
 waitKey(0);
 
 return 0;
}

原圖為：