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 | 1 | initial version |
In the following code you have to call bhDisplayHSVHistogram for display HSI channel histogram.
IplImage* bhGet8Depth(const IplImage* srcImage,int zeroFlag)
{
IplImage* resultImg = cvCreateImage(cvGetSize(srcImage),8,1);
if (zeroFlag == 1)
cvZero(resultImg);
else if (zeroFlag == 2)
{
if (srcImage->depth == 8 )
{
if ( srcImage->nChannels == 3)
cvCvtColor(srcImage,resultImg,CV_BGR2GRAY);
else if( srcImage->nChannels == 1)
cvCopyImage(srcImage,resultImg);
}
else if (srcImage->depth == IPL_DEPTH_32F && srcImage->nChannels ==1)
{
cvNormalize(srcImage,resultImg,0,255,CV_MINMAX);
}
}
return resultImg;
}
void bhGet1DHistogram(IplImage* srcImage ,CvHistogram** hist, int size, IplImage* mask)
{
int sizes[] = {size};
float ranges1[] = {0,float(size)};
float* ranges[] = {ranges1};
*hist = cvCreateHist(1,sizes,CV_HIST_ARRAY,ranges,1);
if (mask != 0)
cvCalcHist(&srcImage,*hist,0,mask);
else cvCalcHist(&srcImage,*hist,0);
}
void bhShow1DHistogram( CvHistogram* hist,IplImage** histImage,int height)
{
*histImage = cvCreateImage(cvSize(hist->mat.dim[0].size,height),8,1);
cvZero(*histImage);
float min_value, max_value;
cvGetMinMaxHistValue(hist,&min_value,&max_value);
float* pHist = hist->mat.data.fl;
for (int j=0; j < hist->mat.dim[0].size; j++)
{
int value = cvRound( pHist[j] / max_value * height);
cvLine(*histImage,cvPoint(j,height),cvPoint(j,height- value),cvScalarAll(255)) ;
}
}
void bhDisplayHSVHistogram(IplImage* srcImage)
{
IplImage* hsvImg = cvCreateImage(cvGetSize(srcImage),8,3);
cvCvtColor(srcImage,hsvImg,CV_BGR2HSV);
IplImage* hImg = bhGet8Depth(srcImage);
IplImage* sImg = bhGet8Depth(srcImage);
IplImage* vImg = bhGet8Depth(srcImage);
cvSplit(hsvImg,hImg,sImg,vImg,0);
CvHistogram *histH,*histS,*histI;
bhGet1DHistogram(hImg,&histH,256,maskImage);
bhGet1DHistogram(sImg,&histS,256,maskImage);
bhGet1DHistogram(vImg,&histI,256,maskImage);
IplImage *histImgH ,*histImgS,*histImgI;
bhShow1DHistogram(histH,&histImgH,100);
bhShow1DHistogram(histS,&histImgS,100);
bhShow1DHistogram(histI,&histImgI,100);
cvShowImage("Hue Histogram",histImgH);
cvShowImage("Saturation Histogram",histImgS);
cvShowImage("Intensity Histogram",histImgI);
cvWaitKey(0);
cvDestroyWindow("Hue Histogram");
cvDestroyWindow("Saturation Histogram");
cvDestroyWindow("Intensity Histogram");
cvReleaseHist(&histH);
cvReleaseHist(&histS);
cvReleaseHist(&histI);
cvReleaseImage(&histImgH);
cvReleaseImage(&histImgS);
cvReleaseImage(&histImgI);
cvReleaseImage(&hImg);
cvReleaseImage(&sImg);
cvReleaseImage(&vImg);
cvReleaseImage(&hsvImg);
}
| | 2 | No.2 Revision |
In the following code you have to call bhDisplayHSVHistogram for display HSI channel channels histogram.
IplImage* bhGet8Depth(const IplImage* srcImage,int zeroFlag)
{
IplImage* resultImg = cvCreateImage(cvGetSize(srcImage),8,1);
if (zeroFlag == 1)
cvZero(resultImg);
else if (zeroFlag == 2)
{
if (srcImage->depth == 8 )
{
if ( srcImage->nChannels == 3)
cvCvtColor(srcImage,resultImg,CV_BGR2GRAY);
else if( srcImage->nChannels == 1)
cvCopyImage(srcImage,resultImg);
}
else if (srcImage->depth == IPL_DEPTH_32F && srcImage->nChannels ==1)
{
cvNormalize(srcImage,resultImg,0,255,CV_MINMAX);
}
}
return resultImg;
}
void bhGet1DHistogram(IplImage* srcImage ,CvHistogram** hist, int size, IplImage* mask)
{
int sizes[] = {size};
float ranges1[] = {0,float(size)};
float* ranges[] = {ranges1};
*hist = cvCreateHist(1,sizes,CV_HIST_ARRAY,ranges,1);
if (mask != 0)
cvCalcHist(&srcImage,*hist,0,mask);
else cvCalcHist(&srcImage,*hist,0);
}
void bhShow1DHistogram( CvHistogram* hist,IplImage** histImage,int height)
{
*histImage = cvCreateImage(cvSize(hist->mat.dim[0].size,height),8,1);
cvZero(*histImage);
float min_value, max_value;
cvGetMinMaxHistValue(hist,&min_value,&max_value);
float* pHist = hist->mat.data.fl;
for (int j=0; j < hist->mat.dim[0].size; j++)
{
int value = cvRound( pHist[j] / max_value * height);
cvLine(*histImage,cvPoint(j,height),cvPoint(j,height- value),cvScalarAll(255)) ;
}
}
void bhDisplayHSVHistogram(IplImage* srcImage)
{
IplImage* hsvImg = cvCreateImage(cvGetSize(srcImage),8,3);
cvCvtColor(srcImage,hsvImg,CV_BGR2HSV);
IplImage* hImg = bhGet8Depth(srcImage);
IplImage* sImg = bhGet8Depth(srcImage);
IplImage* vImg = bhGet8Depth(srcImage);
cvSplit(hsvImg,hImg,sImg,vImg,0);
CvHistogram *histH,*histS,*histI;
bhGet1DHistogram(hImg,&histH,256,maskImage);
bhGet1DHistogram(sImg,&histS,256,maskImage);
bhGet1DHistogram(vImg,&histI,256,maskImage);
IplImage *histImgH ,*histImgS,*histImgI;
bhShow1DHistogram(histH,&histImgH,100);
bhShow1DHistogram(histS,&histImgS,100);
bhShow1DHistogram(histI,&histImgI,100);
cvShowImage("Hue Histogram",histImgH);
cvShowImage("Saturation Histogram",histImgS);
cvShowImage("Intensity Histogram",histImgI);
cvWaitKey(0);
cvDestroyWindow("Hue Histogram");
cvDestroyWindow("Saturation Histogram");
cvDestroyWindow("Intensity Histogram");
cvReleaseHist(&histH);
cvReleaseHist(&histS);
cvReleaseHist(&histI);
cvReleaseImage(&histImgH);
cvReleaseImage(&histImgS);
cvReleaseImage(&histImgI);
cvReleaseImage(&hImg);
cvReleaseImage(&sImg);
cvReleaseImage(&vImg);
cvReleaseImage(&hsvImg);
}
| | 3 | No.3 Revision |
In the following code you have to call bhDisplayHSVHistogram for display HSI channels histogram.
IplImage* bhGet8Depth(const IplImage* srcImage,int zeroFlag)
{
IplImage* resultImg = cvCreateImage(cvGetSize(srcImage),8,1);
if (zeroFlag == 1)
cvZero(resultImg);
else if (zeroFlag == 2)
{
if (srcImage->depth == 8 )
{
if ( srcImage->nChannels == 3)
cvCvtColor(srcImage,resultImg,CV_BGR2GRAY);
else if( srcImage->nChannels == 1)
cvCopyImage(srcImage,resultImg);
}
else if (srcImage->depth == IPL_DEPTH_32F && srcImage->nChannels ==1)
{
cvNormalize(srcImage,resultImg,0,255,CV_MINMAX);
}
}
return resultImg;
}
void bhGet1DHistogram(IplImage* srcImage ,CvHistogram** hist, int size, IplImage* mask)
{
int sizes[] = {size};
float ranges1[] = {0,float(size)};
float* ranges[] = {ranges1};
*hist = cvCreateHist(1,sizes,CV_HIST_ARRAY,ranges,1);
if (mask != 0)
cvCalcHist(&srcImage,*hist,0,mask);
else cvCalcHist(&srcImage,*hist,0);
}
void bhShow1DHistogram( CvHistogram* hist,IplImage** histImage,int height)
{
*histImage = cvCreateImage(cvSize(hist->mat.dim[0].size,height),8,1);
cvZero(*histImage);
float min_value, max_value;
cvGetMinMaxHistValue(hist,&min_value,&max_value);
float* pHist = hist->mat.data.fl;
for (int j=0; j < hist->mat.dim[0].size; j++)
{
int value = cvRound( pHist[j] / max_value * height);
cvLine(*histImage,cvPoint(j,height),cvPoint(j,height- value),cvScalarAll(255)) ;
}
}
void bhDisplayHSVHistogram(IplImage* srcImage)
{
IplImage* hsvImg = cvCreateImage(cvGetSize(srcImage),8,3);
cvCvtColor(srcImage,hsvImg,CV_BGR2HSV);
IplImage* hImg = bhGet8Depth(srcImage);
IplImage* sImg = bhGet8Depth(srcImage);
IplImage* vImg = bhGet8Depth(srcImage);
cvSplit(hsvImg,hImg,sImg,vImg,0);
CvRect ROI = cvGetImageROI(srcImage);
maskImage = bhGet8Depth(srcImage,1);
cvRectangleR(maskImage,ROI,cvScalarAll(255),-1);
CvHistogram *histH,*histS,*histI;
bhGet1DHistogram(hImg,&histH,256,maskImage);
bhGet1DHistogram(sImg,&histS,256,maskImage);
bhGet1DHistogram(vImg,&histI,256,maskImage);
cvReleaseImage(&maskImage);
IplImage *histImgH ,*histImgS,*histImgI;
bhShow1DHistogram(histH,&histImgH,100);
bhShow1DHistogram(histS,&histImgS,100);
bhShow1DHistogram(histI,&histImgI,100);
cvShowImage("Hue Histogram",histImgH);
cvShowImage("Saturation Histogram",histImgS);
cvShowImage("Intensity Histogram",histImgI);
cvWaitKey(0);
cvDestroyWindow("Hue Histogram");
cvDestroyWindow("Saturation Histogram");
cvDestroyWindow("Intensity Histogram");
cvReleaseHist(&histH);
cvReleaseHist(&histS);
cvReleaseHist(&histI);
cvReleaseImage(&histImgH);
cvReleaseImage(&histImgS);
cvReleaseImage(&histImgI);
cvReleaseImage(&hImg);
cvReleaseImage(&sImg);
cvReleaseImage(&vImg);
cvReleaseImage(&hsvImg);
}