HSV三维直方图反向投影

最新推荐文章于 2022-01-25 19:17:31 发布

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#image #include #float

#include <cv.h>
#include <highgui.h>
#include <stdio.h>

IplImage *Image1,*Image2;
IplImage *HSV;
IplImage *HueImage,*SaturationImage,*ValueImage;
IplImage *ImageArray[3];
IplImage *BackProjectImage;
CvHistogram *Histogram1;
IplImage *HistogramImage1;
CvPoint Point1,Point2;

int HueValue=0;

int HistogramBins[3] ={180,256,256};
int HistogramBinWidth;
float HistogramRange1[6]={0,180,0,255,0,255};
float *HistogramRange[3]={&HistogramRange1[0],&HistogramRange1[2],&HistogramRange1[4]};
void onTrackbar(int position);

int main()
{

    Image1 =cvLoadImage("lena.jpg",1);
    HSV = cvCreateImage( cvGetSize(Image1),8,3 );
    HueImage = cvCreateImage( cvGetSize(Image1),8,1 );
    SaturationImage = cvCreateImage( cvGetSize(Image1),8,1 );
    ValueImage = cvCreateImage( cvGetSize(Image1),8,1);
    ImageArray[0]=HueImage;
    ImageArray[1]=SaturationImage;
    ImageArray[2]=ValueImage;

BackProjectImage = cvCreateImage( cvGetSize(Image1),8,3 );

Histogram1 = cvCreateHist(3,HistogramBins,CV_HIST_SPARSE,HistogramRange);

cvCvtColor( Image1, HSV, CV_BGR2HSV );
cvSplit(HSV,HueImage,SaturationImage,ValueImage,0);

cvCalcHist( ImageArray, Histogram1);

    cvNamedWindow("Riverbank",1 );
    cvCreateTrackbar("Hue Thresh","Riverbank",&HueValue,200,onTrackbar);
    cvShowImage("Riverbank",Image1);
    cvWaitKey(0);
return 0;

}

void onTrackbar(int position)
{
    CvHistogram *Histogram2= cvCreateHist(3,HistogramBins,CV_HIST_SPARSE,HistogramRange);
    IplImage *Image2=cvCreateImage( cvGetSize(Image1),8,3 );
    IplImage *BackProjectImage = cvCreateImage( cvGetSize(Image1),8,1 );

cvCopyHist(Histogram1,&Histogram2);

    cvThreshHist(Histogram2,position);
    cvCalcBackProject( ImageArray, BackProjectImage, Histogram2);
    cvCopy(Image1,Image2,BackProjectImage);

cvShowImage("Riverbank",Image2);
}