/*

 * 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;

}

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