OpenCV图像的基础叠加

/*
 * FileName : blend.cpp
 * Author   : xiahouzuoxin @163.com
 * Version  : v1.0
 * Date     : Mon 28 Jul 2014 08:47:59 PM CST
 * Brief    : 
 * 
 * Copyright (C) MICL,USTB
 */
#include <cv.h>
#include <highgui.h>
#include <stdio.h>

using namespace std;
using namespace cv;

int main(int argc, char *argv[])
{
    double alpha = 0.5;
    double beta;
    double input;

    Mat src1, src2, dst;

    // User input alpha
    cout<<"Simple Linear Blender" << endl;
    cout<<"---------------------" << endl;
    cout<<"Enter alpha [0-1]: ";
    cin>>input;

    if (alpha >=0 && alpha <=1) {
        alpha = input;
    }

    // Read images
    src1 = imread("../test_imgs/KeNan.jpg");
    src2 = imread("../test_imgs/Background.jpg");

    if (!src1.data) {
        cout<<"Error loading src1\n"<<endl;
        return -1;
    }
    if (!src2.data) {
        cout<<"Error loading src2\n"<<endl;
        return -1;
    }

    // Create WIndows
    namedWindow("Linear Blend", 1);

    beta = (1.0 - alpha);
    addWeighted(src1, alpha, src2, beta, 0.0, dst);

    imshow("Linear Blend", dst);
    waitKey(0);

    return 0;
}