opencv c++图像混合

#include<opencv2\opencv.hpp>
#include<iostream>
#include<math.h>

using namespace cv;
int main()
{
	Mat dst;
	Mat src1 = imread("C:/Users/asus/Desktop/tupian/3.jpg");
	Mat src2 = imread("C:/Users/asus/Desktop/tupian/4.jpg");
	if (!src1.data)
	{
		printf("could not load image...\n");
		return -1;
	}
	if (!src2.data)
	{
		printf("could not load image...\n");
		return -1;
	}
	double alpha = 0.5;
	if (src1.rows==src2.rows&&src1.cols==src2.cols&&src1.type()==src2.type())
	{
		addWeighted(src1, alpha, src2, (1.0 - alpha), 0.0, dst);
		//add(src1, src2, dst, Mat());
		//multiply(src1, src2, dst, 1.0);
		imshow("1", src1);
		imshow("2", src2);
		imshow("3", dst);

	}
	else
	{
		printf("could not blend images");
		return -1;
	}
	waitKey(0);
	return 0;

}