?代码如下：
?
#include <opencv2/opencv.hpp>
#include"opencv2/highgui/highgui.hpp"
#include<iostream>
using namespace std;
using namespace cv;
#define WINDOW_NAME "【线性混合示例】"
const int g_nMaxAlphaValue = 100;
int g_nMaxAlphaSlider;
double g_dAlphaValue;
double g_dBetaValue;
Mat g_srcImage1;
Mat g_srcImage2;
Mat g_dstImage;
void on_Trackbar(int ,void*)
{
?? ?g_dAlphaValue = (double)g_nMaxAlphaSlider / 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);
}
int main(int argc,char** argv )
{
?? ?g_srcImage1 = imread("C:/Users/离子键/source/repos/Project8/1.jpg");
?? ?g_srcImage2 = imread("C:/Users/离子键/source/repos/Project8/3.jpg");
?? ?if (!g_srcImage1.data)
?? ?{
?? ??? ?printf("错误");
?? ??? ?return -1;
?? ?}
?? ?if (!g_srcImage2.data)
?? ?{
?? ??? ?printf("错误");
?? ??? ?return -1;
?? ?}
?? ?g_nMaxAlphaSlider = 70;
?? ?namedWindow(WINDOW_NAME,1);
?? ?char Trackbarname[50];
?? ?createTrackbar(Trackbarname, WINDOW_NAME, &g_nMaxAlphaSlider, g_nMaxAlphaValue, on_Trackbar );
?? ?on_Trackbar(g_nMaxAlphaSlider, 0);
?? ?waitKey(0);
?? ?return 0;
}
期间我遇到一点小问题：
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?这是要把这个53行注释掉：
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?这个sprintf不是这样用的，应该如下：
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?运行结果如图：
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