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| #include <iostream> #include <sstream> #include <string> using namespace std;
#include "opencv2/opencv.hpp" using namespace cv;
Mat img; bool applyGray = false; bool applyBlur = false; bool applySobel = false;
void applyFilters() { Mat result; img.copyTo(result); if (applyGray) { cvtColor(result, result, COLOR_BGR2GRAY); } if (applyBlur) { blur(result, result, Size(5, 5)); } if (applySobel) { Sobel(result, result, CV_8U, 1, 1); } imshow("Lena", result); }
void grayCallback(int state, void *userData) { applyGray = true; applyFilters(); } void bgrCallback(int state, void *userData) { applyGray = false; applyFilters(); }
void blurCallback(int state, void *userData) { applyBlur = (bool)state; applyFilters(); }
void sobelCallback(int state, void *userData) { applySobel = !applySobel; applyFilters(); }
int main(int argc, const char **argv) { img = imread("lena.jpg"); namedWindow("Lena");
createButton("Blur", blurCallback, NULL, QT_CHECKBOX, 0); createButton("Gray", grayCallback, NULL, QT_RADIOBOX, 0); createButton("RGB", bgrCallback, NULL, QT_RADIOBOX, 1); createButton("Sobel", sobelCallback, NULL, QT_PUSH_BUTTON, 0);
waitKey(0);
return 0; }
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