计算彩色的BGR图像的直方图

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#include<opencv2/core/core.hpp>#include<opencv2/highgui/highgui.hpp>#include<opencv2/imgproc/imgproc.hpp>#include<iostream>using namespace std;using namespace cv;class ColorHistogram{private:int histSize[3];float hranges[2];const float *ranges[3];int channels[3];public:ColorHistogram();cv::MatND getHistogram(const cv::Mat &image);cv::SparseMat getSparseHistogram(const cv::Mat &image);cv::Mat getHistogramImage(const cv::Mat &image,int i);};ColorHistogram::ColorHistogram(){histSize[0]=256;histSize[1]=256;histSize[2]=256;hranges[0]=0.0;hranges[1]=255.0;ranges[0]=hranges;ranges[1]=hranges;ranges[2]=hranges;channels[0]=0;channels[1]=1;channels[2]=2;}cv::MatND ColorHistogram::getHistogram(const cv::Mat &image){cv::MatND hist;cv::calcHist(&image,1,channels,cv::Mat(),hist,3,histSize,ranges);return hist;}cv::SparseMat ColorHistogram::getSparseHistogram(const cv::Mat &image){cv::SparseMat hist(3,histSize,CV_32F);cv::calcHist(&image,1,channels,cv::Mat(),hist,3,histSize,ranges);return hist;}

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