带滚动条的线性混合示例：
#include "stdafx.h" #include<iostream> #include<thread> #include<vector> #include <opencv2/core/core.hpp> #include <opencv2/contrib/contrib.hpp> #include <opencv2/highgui/highgui.hpp> #include <opencv2/imgproc/imgproc.hpp> #include <opencv2/objdetect/objdetect.hpp>
using namespace cv; using namespace std;
int g_slider_position = 0; double alpha = 0.5; double beta; Mat src1, src2, dst;
void onTrackingbarSlide(int pos) { alpha = (double)pos / 100; beta = (1.0 - alpha); addWeighted(src1, alpha, src2, beta, 0.0, dst); imshow("Linear Blend", dst); }
int _tmain(int argc, _TCHAR* argv[]) { double input;
/// Ask the user enter alpha std::cout << " Simple Linear Blender " << std::endl; std::cout << "-----------------------" << std::endl; std::cout << "* Enter alpha [0-1]: "; std::cin >> input;
/// We use the alpha provided by the user iff it is between 0 and 1 if (alpha >= 0 && alpha <= 1) { alpha = input; }
/// Read image ( same size, same type ) src1 = imread("E:\myImage\sql.png"); src2 = imread("E:\myImage\network26.png");
if (!src1.data) { printf("Error loading src1 "); return -1; } if (!src2.data) { printf("Error loading src2 "); return -1; }
/// Create Windows namedWindow("Linear Blend", 1);
cvCreateTrackbar("Linear Blend", "Linear Blend", &g_slider_position, 100, onTrackingbarSlide);
beta = (1.0 - alpha); addWeighted(src1, alpha, src2, beta, 0.5, dst);
imshow("Linear Blend", dst);
waitKey(0); return 0; } |
