#include <opencv2corecore.hpp> #include <opencv2highguihighgui.hpp> #include <opencv2imgprocimgproc.hpp> #include <iostream> using namespace cv;
using namespace std;
Mat inputImage;
Mat inputImage_mosaic;
Mat inputImage_clone;
//马赛克的大小 int neightbourhood = 20;
//记录鼠标的状态，0为鼠标左键未按下或弹起，1为鼠标左键按下 int mouseStatus = 0;
void onMouse(int events, int x, int y, int flag, void* ustg);
//创建马赛克图片 void createMosaicImage(Mat inputMat, Mat& outputMat, int size);
//设置马赛克区域 void setMosaic(Mat& inputMat, Rect rect);
int main(void){
inputImage = imread("test2.jpg");
inputImage_clone = inputImage.clone();
createMosaicImage(inputImage, inputImage_mosaic, neightbourhood);
namedWindow("showImage", 0);
setMouseCallback("showImage", onMouse);
waitKey();
return 0;
}
void createMosaicImage(Mat inputMat, Mat& outputMat, int size){
RNG rng;
int height = inputMat.rows;
int width = inputMat.cols;
Mat padding;
Mat tempMat;
//为了方便后面的计算，将输入的图像大小扩充到宽高都是size的倍数 copyMakeBorder(inputMat, padding, 0, size - inputMat.rows % size, 0, size - inputMat.cols % size, BORDER_REPLICATE);
tempMat = padding.clone();
for (int row = 0;
row < padding.rows;
row += size){
for (int col = 0;
col < padding.cols;
col += size){
int rand_x = rng.uniform(0, size);
int rand_y = rng.uniform(0, size);
Rect rect = Rect(col, row, size, size);
Mat roi = tempMat(rect);
Scalar color = Scalar(padding.at<Vec3b>(row + rand_y, col + rand_x)[0], padding.at<Vec3b>(row + rand_y, col + rand_x)[1], padding.at<Vec3b>(row + rand_y, col + rand_x)[2]);
roi.setTo(color);
}
}
outputMat = tempMat(Rect(0, 0, width, height)).clone();
}
void setMosaic(Mat& inputMat, Rect rect){
Mat roi = inputMat(rect);
Mat tempRoi = inputImage_mosaic(rect);
tempRoi.copyTo(roi);
}
void onMouse(int events, int x, int y, int flag, void* ustg){
//当鼠标移除图片区域的时候，不做操作 if (x < 0 || x > inputImage.cols || y < 0 || y > inputImage.rows){
return;
}
//马赛克块的位置信息 int x_left, x_right, y_top, y_bottom;
x - neightbourhood <= 0 ? x_left = 0 : x_left = x - neightbourhood;
x + neightbourhood > inputImage.cols ? x_right = inputImage.cols: x_right = x + neightbourhood;
y - neightbourhood <= 0 ? y_top = 0 : y_top = y - neightbourhood;
y + neightbourhood > inputImage.rows ? y_bottom = inputImage.rows: y_bottom = y + neightbourhood;
if (events == CV_EVENT_LBUTTONDOWN){
mouseStatus = 1;
setMosaic(inputImage_clone, Rect(x_left, y_top, x_right - x_left, y_bottom - y_top));
}
else if (events == CV_EVENT_MOUSEMOVE){
if (mouseStatus == 1){
setMosaic(inputImage_clone, Rect(x_left, y_top, x_right - x_left, y_bottom - y_top));
}
else{
//nothing }
}
else if (events == CV_EVENT_LBUTTONUP){
mouseStatus = 0;
}
else {
//cout << "nothing" << endl;
}
imshow("showImage", inputImage_clone);
}