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#include <opencv2/opencv.hpp>
#include <opencv2/highgui/highgui.hpp>
using namespace cv;
#define WINDOW_NAME "【线性混合示例】"
//申明全局变量
const int g_nMaxAlphaValue = 100;
int g_nAlphaValueSlider;
double g_dAlphaValue;
double g_dBetaValue;
Mat g_srcImage1;
Mat g_srcImage2;
Mat g_dstImage;
//回调函数
void On_Trackbar(int, void*)
{
g_dAlphaValue = (double)g_nAlphaValueSlider / g_nMaxAlphaValue;
g_dBetaValue = (1.0 - g_dAlphaValue);
addWeighted(g_srcImage1, g_dAlphaValue, g_srcImage2, g_dBetaValue, 0.0, g_dstImage);
imshow(WINDOW_NAME, g_dstImage);
waitKey(30);
}
//主函数
int main(int argc, char** argv)
{
g_srcImage1 = imread("1.jpg");
g_srcImage2 = imread("2,jpg");
g_nAlphaValueSlider = 70;
namedWindow(WINDOW_NAME, 1);
char TrackbarName[50];
sprintf_s(TrackbarName, "透明值 %d", g_nMaxAlphaValue);
createTrackbar(TrackbarName, WINDOW_NAME, &g_nAlphaValueSlider, g_nMaxAlphaValue, On_Trackbar);
On_Trackbar(g_nAlphaValueSlider, 0);
waitKey();
return 0;
}