Opencv-Bias and Gain

Opencv-Bias and Gain

// define head function#ifndef PS_ALGORITHM_H_INCLUDED#define PS_ALGORITHM_H_INCLUDED#include 
  
   #include 
   
    #include "cv.h"#include "highgui.h"#include "cxmat.hpp"#include "cxcore.hpp"#include "math.h"using namespace std;using namespace cv;void Show_Image(Mat&, const string &);#endif // PS_ALGORITHM_H_INCLUDED/*Adjust bias and gain.*/#include "PS_Algorithm.h"float Bias(float a, float b);float Gain(float a, float b);int main(){    string  Image_name("4.jpg");    Mat Img=imread(Image_name.c_str());    Mat Img_out(Img.size(), CV_32FC3);    float gain_val = 0.75;   // 0-1    float bias_val = 0.25;   // 0-1    int width=Img.cols;    int height=Img.rows;    float val;    for (int y=0; y
    
     (y, x)[k]/255;                val=Gain(val, gain_val);                Img_out.at
     
      (y, x)[k]=Bias(val, bias_val);            }        }    }    Show_Image(Img_out, "New_img");    cout<<"All is well."<
      
        .999) return 1.0f; if (a < 0.5) return pow(2 * a, p) / 2; else return 1.0f - pow(2 * (1. - a), p) / 2; */ float c = (1.0f/b-2.0f) * (1.0f-2.0f*a); if (a < 0.5) return a/(c+1.0f); else return (c-a)/(c-1.0f);}// define the show image#include "PS_Algorithm.h"#include 
       
        #include 
        
         using namespace std;using namespace cv;void Show_Image(Mat& Image, const string& str){ namedWindow(str.c_str(),CV_WINDOW_AUTOSIZE); imshow(str.c_str(), Image);}