opencv-直方图均衡化

图像进行直方图均衡化可以增强图像的对比度效果！！！

#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include <iostream>
#include <stdio.h>

using namespace cv;
using namespace std;

int main( int argc, char** argv )
{
Mat src, dst;

char* source_window = "Source image";
char* equalized_window = "Equalized Image";

//加载彩色图像
src = imread( argv[1], 1 );

if( !src.data )
{ cout<<"Usage: ./Histogram_Demo <path_to_image>"<<endl;
return -1;
}

//把彩色图像转换为灰度图像
cvtColor( src, src, CV_BGR2GRAY );

//应用直方图均衡化函数
equalizeHist( src, dst );

//创建窗口并显示输出结果
namedWindow( source_window, CV_WINDOW_AUTOSIZE );
namedWindow( equalized_window, CV_WINDOW_AUTOSIZE );

imshow( source_window, src );
imshow( equalized_window, dst );

//等待程序运行结束
waitKey(0);

return 0;

}