OpenCV 对两幅图像求和（求混合(blending)）

 1 #include <cv.h>
 2 #include <highgui.h>
 3 #include <iostream>
 4 
 5 using namespace cv;
 6 
 7 int main( int argc, char** argv )
 8 {
 9  double alpha = 0.5; double beta; double input;
10 
11  Mat src1, src2, dst;
12 
13  /// Ask the user enter alpha
14  std::cout<<" Simple Linear Blender "<<std::endl;
15  std::cout<<"-----------------------"<<std::endl;
16  std::cout<<"* Enter alpha [0-1]: ";
17  std::cin>>input;
18 
19  /// We use the alpha provided by the user iff it is between 0 and 1
20  if( alpha >= 0 && alpha <= 1 )
21    { alpha = input; }
22 
23  /// Read image ( same size, same type )
24  src1 = imread("../../images/LinuxLogo.jpg");
25  src2 = imread("../../images/WindowsLogo.jpg");
26 
27  if( !src1.data ) { printf("Error loading src1 \n"); return -1; }
28  if( !src2.data ) { printf("Error loading src2 \n"); return -1; }
29 
30  /// Create Windows
31  namedWindow("Linear Blend", 1);
32 
33  beta = ( 1.0 - alpha );
34  addWeighted( src1, alpha, src2, beta, 0.0, dst);
35 
36  imshow( "Linear Blend", dst );
37 
38  waitKey(0);
39  return 0;
40 }