int LocalisationPupil::estimateThreshold(IplImage *im){
IplImage* im2 = cvCloneImage(im);
// supprimer les bruits
cvSmooth( im2, im2, CV_GAUSSIAN,3 ,3);
int bins = 50;
int index_min,index_max;
int hsize[] = {bins};
float max_value = 0, min_value = 0;
//ranges - grayscale 0 to 50
float xranges[] = { 0, 50 };
float* ranges[] = { xranges };
CvHistogram* hist = cvCreateHist( 1, hsize, CV_HIST_ARRAY, ranges,1);
cvCalcHist( &im2, hist, 0, NULL);
cvGetMinMaxHistValue( hist, &min_value, &max_value,&index_min,&index_max);
int thresh;
thresh = index_max+10;
cvReleaseImage( &im2);
return thresh;
}
Mask* Histogram::representInMask()
{
int h_bins = 30, s_bins = 32;
int scale = 10;
IplImage* hist_image = cvCreateImage(cvSize( h_bins * scale, s_bins * scale ),
8,
3);
cvZero( hist_image );
/* populate our visualization with little gray squares. */
float max_value = 0;
cvGetMinMaxHistValue( m_histogram, 0, &max_value, 0, 0 );
for( int h = 0; h < h_bins; h++ ) {
for( int s = 0; s < s_bins; s++ ) {
float bin_val = cvQueryHistValue_2D( m_histogram, h, s );
int intensity = cvRound( bin_val * 255 / max_value );
cvRectangle(hist_image,
cvPoint( h*scale, s*scale ),
cvPoint( (h+1)*scale - 1, (s+1)*scale - 1),
CV_RGB(intensity,intensity,intensity),
CV_FILLED);
}
}
return new Image(hist_image);
}
// startTracking()
//
void startTracking(IplImage * pImg, CvRect pHandRect,KalmanFilter &kfilter)
{
float maxVal = 0.f;
// Make sure internal data structures have been allocated
if( !pHist ) createTracker(pImg);
// Create a new hue image
updateHueImage(pImg);
if(!((pHandRect.x<0)||(pHandRect.y<0)||((pHandRect.x+pHandRect.width)>pImg->width)||((pHandRect.y+pHandRect.height)>pImg->height))) {
// Create a histogram representation for the hand
cvSetImageROI( pHueImg, pHandRect );
cvSetImageROI( pMask, pHandRect );
cvCalcHist( &pHueImg, pHist, 0, pMask );
cvGetMinMaxHistValue( pHist, 0, &maxVal, 0, 0 );
cvConvertScale( pHist->bins, pHist->bins, maxVal? 255.0/maxVal : 0, 0 );
cvResetImageROI( pHueImg );
cvResetImageROI( pMask );
}
// Store the previous hand location
prevHandRect =pHandRect;
prevHandRect2 =pHandRect;
//Pass the hand location to kalman initializer
kfilter.predictionBegin(prevHandRect);
}
IplImage* DrawHistogram(CvHistogram *hist, float scaleX=2, float scaleY=2){
float histMax = 0;
cvGetMinMaxHistValue(hist, 0, &histMax, 0, 0);
IplImage* imgHist = cvCreateImage(cvSize(256*scaleX, 64*scaleY), 8 ,1);
cvZero(imgHist); //clear all elements to be zeros.
cvSet(imgHist, cvScalar(255)); //set all to be 255; white background.
for(int i=0; i< 255; i++) {
//float histValue = cvQueryHistValue_1D(hist, i); //not working, use the one below instead.
float histValue = cvGetReal1D(hist->bins, i);
//float nextValue = cvQueryHistValue_1D(hist, i+1); //not working.
float nextValue = cvGetReal1D(hist->bins, i+1);
CvPoint pt1 = cvPoint(i*scaleX, 64*scaleY);
CvPoint pt2 = cvPoint(i*scaleX+scaleX, 64*scaleY);
CvPoint pt3 = cvPoint(i*scaleX+scaleX, (64-nextValue*64/histMax)*scaleY);
CvPoint pt4 = cvPoint(i*scaleX, (64-histValue*64/histMax)*scaleY);
int numPts = 5;
CvPoint pts[] = {pt1, pt2, pt3, pt4, pt1};
cvFillConvexPoly(imgHist, pts, numPts, cvScalar(0)); //filled with black color.
}
return imgHist;
}
// ------------------------------------------------------------------------
void LABHistogram2D::Draw(CDC* pDC) {
CPen pen(PS_SOLID, 1, RGB(0, 0, 0));
CPen* pOldPen = pDC->SelectObject(&pen);
float min_value = 0, max_value = 0;
cvGetMinMaxHistValue( h, &min_value, &max_value, 0, 0 );
CRect box;
pDC->GetWindow()->GetWindowRect(&box);
int iscale = box.Width()/a_bins;
int jscale = box.Height()/b_bins;
for(int i=0; i<a_bins;i++ )
{
for(int j=0; j<b_bins;j++ )
{
float bin_val = cvQueryHistValue_2D( h, i, j );
int intensity = cvRound((bin_val-min_value)*255/(max_value-min_value));
CBrush fill;
fill.CreateSolidBrush(RGB(0,0,intensity));
CRect r(i*iscale, j*jscale, (i+1)*iscale - 1, (j+1)*jscale - 1);
pDC->FillRect(&r, &fill);
}
}
pDC->SelectObject(pOldPen);
}
HandDetect::HandDetect()
{
numColorBins = 256;
max_val = 0.f;
hand1 = cvLoadImage("hand.png");
hand2 = cvLoadImage("hand2.png");
hist1 = cvCreateHist(1, &numColorBins, CV_HIST_ARRAY);
hist2 = cvCreateHist(1, &numColorBins, CV_HIST_ARRAY);
rad=0;
vmin=10, vmax=256, smin=30;
capture = cvCaptureFromCAM(0);
setImage();
backproject = cvCreateImage(cvGetSize(image), 8, 1);
gray = cvCreateImage(cvGetSize(image), 8, 1);
track_window = cvRect((int)image->width/2, (int)image->height/2, 1, 1);
track_box.center.x=-1;
track_box.center.y=-1;
hsvHand1 = cvCreateImage(cvGetSize(hand1), 8, 3);
mskHand1 = cvCreateImage(cvGetSize(hand1), 8, 1);
hueHand1 = cvCreateImage(cvGetSize(hand1), 8, 1);
hsvHand2 = cvCreateImage(cvGetSize(hand2), 8, 3);
mskHand2 = cvCreateImage(cvGetSize(hand2), 8, 1);
hueHand2 = cvCreateImage(cvGetSize(hand2), 8, 1);
cvCvtColor(hand1, hsvHand1, CV_RGB2HSV);
cvInRangeS(hsvHand1, cvScalar(0, smin, MIN(vmin, vmax), 0), cvScalar(180, 256, MAX(vmin, vmax), 0), mskHand1);
cvSplit(hsvHand1, hueHand1, 0, 0, 0);
cvCalcHist(&hueHand1, hist1, 0, mskHand1);
cvGetMinMaxHistValue(hist1, 0, &max_val, 0, 0);
cvConvertScale(hist1->bins, hist1->bins, max_val ? 255. / max_val : 0., 0);
cvCvtColor(hand2, hsvHand2, CV_RGB2HSV);
cvInRangeS(hsvHand2, cvScalar(0, smin, MIN(vmin, vmax), 0), cvScalar(180, 256, MAX(vmin, vmax), 0), mskHand2);
cvSplit(hsvHand2, hueHand2, 0, 0, 0);
cvCalcHist(&hueHand2, hist2, 0, mskHand2);
cvGetMinMaxHistValue(hist2, 0, &max_val, 0, 0);
cvConvertScale(hist2->bins, hist2->bins, max_val ? 255. / max_val : 0., 0);
}
int main( int argc, char** argv )
{
IplImage *src = 0;
IplImage *histimg = 0;
CvHistogram *hist = 0;
int hbins = 255; // 划分HIST的个数，越高越精确
int maxcount = 255;
float hranges_arr[] = {0,maxcount};//
float* hranges = hranges_arr;
int bin_w;
float max_val;
int i;
if((src=cvLoadImage("../cvtest/7newsample.jpg", CV_LOAD_IMAGE_GRAYSCALE)) == NULL) // force to gray image
return -1;
cvNamedWindow( "Histogram", 0 );
cvNamedWindow( "src", 0);
hist = cvCreateHist( 1, &hbins, CV_HIST_ARRAY, &hranges, 1 ); // 计算直方图
histimg = cvCreateImage( cvSize(320,200), 8, 3 );
cvZero( histimg );
cvCalcHist( &src, hist, 0, 0 ); // 计算直方图
float min_val = 0;
cvGetMinMaxHistValue( hist, &min_val, &max_val, 0, 0 ); // 只找最大值
printf("max_val:%.4f,min:%.4f\n",max_val,min_val);
cvConvertScale( hist->bins, hist->bins, max_val ? 255. / max_val : 0., 0 ); // 缩放 bin 到区间 [0,255]
cvZero( histimg );
bin_w = histimg->width / hbins; // hbins: 条的个数，则 bin_w 为条的宽度
// 画直方图
for( i = 0; i < hbins; i++ )
{
double val = ( cvGetReal1D(hist->bins,i)/*255份中的几份*/*histimg->height/maxcount );
CvScalar color = CV_RGB(255,255,0); //(hsv2rgb(i*180.f/hbins);
cvRectangle( histimg, cvPoint(i*bin_w,histimg->height),
cvPoint((i+1)*bin_w,(int)(histimg->height - val)),
color, 1, 8, 0 );
printf("(%d,%d),(%d,%d)\n",i*bin_w,histimg->height,(i+1)*bin_w,(int)(histimg->height - val));
}
cvShowImage( "src", src);
cvShowImage( "Histogram", histimg );
cvWaitKey(0);
cvDestroyWindow("src");
cvDestroyWindow("Histogram");
cvReleaseImage( &src );
cvReleaseImage( &histimg );
cvReleaseHist ( &hist );
return 0;
}
void CvAdaptiveSkinDetector::Histogram::mergeWith(CvAdaptiveSkinDetector::Histogram *source, double weight)
{
float myweight = (float)(1-weight);
float maxVal1 = 0, maxVal2 = 0, *f1, *f2, ff1, ff2;
cvGetMinMaxHistValue(source->fHistogram, NULL, &maxVal2);
if (maxVal2 > 0 )
{
cvGetMinMaxHistValue(fHistogram, NULL, &maxVal1);
if (maxVal1 <= 0)
{
for (int i = 0; i < HistogramSize; i++)
{
f1 = (float*)cvPtr1D(fHistogram->bins, i);
f2 = (float*)cvPtr1D(source->fHistogram->bins, i);
(*f1) = (*f2);
}
}
else
{
for (int i = 0; i < HistogramSize; i++)
{
f1 = (float*)cvPtr1D(fHistogram->bins, i);
f2 = (float*)cvPtr1D(source->fHistogram->bins, i);
ff1 = ((*f1)/maxVal1)*myweight;
if (ff1 < 0)
ff1 = -ff1;
ff2 = (float)(((*f2)/maxVal2)*weight);
if (ff2 < 0)
ff2 = -ff2;
(*f1) = (ff1 + ff2);
}
}
}
};
void Draw_hist(IplImage* img,CvRect Rect)
{
if(Rect.x<=0||Rect.y<=0||Rect.width<=0||Rect.height<=0)
{
return;
}
cvSetImageROI(img,Rect);
IplImage* hsv=cvCreateImage(cvGetSize(img),8,3);
IplImage* h_plane=cvCreateImage(cvGetSize(img),8,1);
IplImage* s_plane=cvCreateImage(cvSize(Rect.width,Rect.height),8,1);
IplImage* v_plane=cvCreateImage(cvSize(Rect.width,Rect.height),8,1);
IplImage* planes[]={h_plane,s_plane};
int h_bins=16,s_bins=8;
int hist_size[]={h_bins,s_bins};
float h_ranges[]={0,180};
float s_ranges[]={0,255};
float* ranges[]={h_ranges,s_ranges};
cvCvtColor(img,hsv,CV_BGR2HSV);
cvResetImageROI(img);
cvSplit(hsv,h_plane,s_plane,v_plane,0);
CvHistogram *hist=cvCreateHist(2,hist_size,CV_HIST_ARRAY,ranges,1);
cvCalcHist(planes,hist,0,0);
float max_value;
cvGetMinMaxHistValue(hist,0,&max_value,0,0);
int height=480;
int width=(h_bins*s_bins*6);
IplImage* hist_img=cvCreateImage(cvSize(width,height),8,3);
cvZero(hist_img);
IplImage* hsv_color=cvCreateImage(cvSize(1,1),8,3);
IplImage* rgb_color=cvCreateImage(cvSize(1,1),8,3);
int bin_w=width/(h_bins*s_bins);
for(int h=0;h<h_bins;h++)
{
for(int s=0;s<s_bins;s++)
{
int i=h*s_bins+s;
//获取直方图中统计的次数，计算显示在图像中的高度
float bin_val=cvQueryHistValue_2D(hist,h,s);
int intensity=cvRound(bin_val*height/max_value);
cvSet2D(hsv_color,0,0,cvScalar(h*180.f/h_bins,s*255.f/s_bins,255,0));
cvCvtColor(hsv_color,rgb_color,CV_HSV2BGR);
CvScalar color=cvGet2D(rgb_color,0,0);
cvRectangle(hist_img,cvPoint(i*bin_w,height),cvPoint((i+1)*bin_w,height-intensity),color,-1,8,0);
}
}
cvNamedWindow("H-S Histogram",1);
cvShowImage("H-S Histogram",hist_img);
}
void CV_MinMaxHistTest::run_func(void)
{
if( hist_type != CV_HIST_ARRAY && test_cpp )
{
cv::SparseMat h((CvSparseMat*)hist[0]->bins);
double _min_val = 0, _max_val = 0;
cv::minMaxLoc(h, &_min_val, &_max_val, min_idx, max_idx );
min_val = (float)_min_val;
max_val = (float)_max_val;
}
else
cvGetMinMaxHistValue( hist[0], &min_val, &max_val, min_idx, max_idx );
}
int main(int argc, char* argv[])
{
cvNamedWindow("Original",CV_WINDOW_AUTOSIZE);
cvNamedWindow("Binaria",CV_WINDOW_AUTOSIZE);
cvNamedWindow("Histograma",CV_WINDOW_AUTOSIZE);
imatge = cvLoadImage("C:\\EUPMT\\Projects\\OpenCV_Contours\\exemple03.jpg", 0);
IplImage* binaria = cvCreateImage(cvGetSize(imatge), 8, 1);
imgHistogram = 0;
int hsize[] = {bins};
float max_value = 0, min_value = 0;
float xranges[] = { 0, 256 };
float* ranges[] = { xranges };
hist = cvCreateHist( 1, hsize, CV_HIST_ARRAY, ranges,1);
cvCalcHist( &imatge, hist, 0, NULL);
cvGetMinMaxHistValue( hist, &min_value, &max_value);
dibuixarHistograma(max_value);
int llindar = llindar_gaussian(imatge, hist);
int step =imatge->widthStep;
int canals = imatge->nChannels;
uchar* imgData = (uchar*) imatge->imageData;
uchar* imgDataBinaria = (uchar*) binaria->imageData;
for( int i = 0; i < imatge->height; i++)
for( int j = 0; j < imatge->width; j++)
{
if((imgData[i*step+j*canals]) > llindar)
{
imgDataBinaria[i*binaria->widthStep+j*binaria->nChannels]=0;
}
else
{
imgDataBinaria[i*binaria->widthStep+j*binaria->nChannels]=255;
}
}
cvShowImage("Original", imatge);
cvShowImage("Histograma", imgHistogram);
cvShowImage("Binaria", binaria);
cvWaitKey(0);
cvDestroyAllWindows();
return 0;
}
void maxHSV(IplImage *img, No *imagem){
/* variaveis do histograma */
int numBins = 256;
float range[] = {0, 255};
float *ranges[] = {range};
/* cria um histograma */
CvHistogram *hist = cvCreateHist(1, &numBins, CV_HIST_ARRAY, ranges, 1);
cvClearHist(hist);
/* aloca as imagens auxiliares */
IplImage *imgHSV = cvCreateImage(cvGetSize(img), 8, 3);
IplImage *imgH = cvCreateImage(cvGetSize(img), 8, 1);
IplImage *imgS = cvCreateImage(cvGetSize(img), 8, 1);
IplImage *imgV = cvCreateImage(cvGetSize(img), 8, 1);
cvCvtColor(img, imgHSV, CV_BGR2HSV); // converte a img (RGB) para imgHSV (HSV)
cvSplit(imgHSV, imgH, imgS, imgV, NULL); // separa os canais da imgHSV
cvCalcHist(&imgH, hist, 0, 0); // calcula o histograma da imgH
cvGetMinMaxHistValue(hist, NULL, NULL, NULL, &imagem->max_h); // coleta a cor dominante
cvClearHist(hist);
cvCalcHist(&imgS, hist, 0, 0);
cvGetMinMaxHistValue(hist, NULL, NULL, NULL, &imagem->max_s);
cvClearHist(hist);
cvCalcHist(&imgV, hist, 0, 0);
cvGetMinMaxHistValue(hist, NULL, NULL, NULL, &imagem->max_v);
cvClearHist(hist);
/* libera as imagens auxiliares */
cvReleaseImage(&imgHSV);
cvReleaseImage(&imgH);
cvReleaseImage(&imgS);
cvReleaseImage(&imgV);
}
IplImage* CamShiftPatch::drawHistImg(CvRect selectROI, CvScalar maskRange)
{
IplImage* hue = 0;
hue = cvCreateImage(cvGetSize(originImage), 8, 1);
IplImage *mask = getInRangeMask(maskRange, hue);//CvScalar 0->Vmin 1->Vmax 2->Smin
//---設定ROI和畫出直方圖---
float max_val = 0.f;
cvSetImageROI(hue, selectROI);
cvSetImageROI(mask, selectROI);
int hdims = 48; //劃分HIST的個數，越高越精確
float hranges_arr[] = { 0, 180 }; //直方圖範圍
float* hranges = hranges_arr;//指向值方圖範圍
histogram = cvCreateHist(1, &hdims, CV_HIST_ARRAY, &hranges, 1); //設定直方圖的格式
cvCalcHist(&hue, histogram, 0, mask); //以hue資訊 得到直方圖 (只有ROI部分的資訊)
cvGetMinMaxHistValue(histogram, 0, &max_val, 0, 0); //只找最大值
cvConvertScale(histogram->bins, histogram->bins, max_val ? 255. / max_val : 0., 0); //縮放bin到區間[0,255]
//input output 尺度放大或縮小 全部顏色的增減
cvResetImageROI(hue); // remove ROI
cvResetImageROI(mask);
//track_window = selectROI; //搜索窗即一開始ROI框
//----畫直方圖hist to histimg------------------
IplImage* histimg = cvCreateImage(cvSize(320, 200), 8, 3); //直方圖顯示空間，三通道
cvZero(histimg); //置背景為黑色
int bin_w = 0;
bin_w = histimg->width / hdims; // hdims:條的個數，則bin_w為條的寬度
for (int i = 0; i < hdims; i++)
{
int val = cvRound(cvGetReal1D(histogram->bins, i)*histimg->height / 255); //cvGetReal1D(直方條高度，第幾條)
CvScalar color = hsv2rgb(i*180.f / hdims); //在RGB空間上，直方圖每條的顏色計算 180/hdims表示每一格多寬 ， i*180/hdims代表到橫軸的哪個位置了 由那個位置的顏色資訊轉換成RGB
cvRectangle(histimg, cvPoint(i*bin_w, histimg->height), cvPoint((i + 1)*bin_w, histimg->height - val), color, -1, 8, 0);//畫出不同顏色的直方長條來
}
//---設定ROI和畫出直方圖 end---
IplImage* returnImg = nullptr;
returnImg = cvCloneImage(histimg);
cvReleaseImage(&hue);
cvReleaseImage(&mask);
cvReleaseImage(&histimg);
return returnImg;
}
void COpenCVMFCView::OnImageHistogram()
{
// TODO: Add your command handler code here
IplImage *src;
IplImage *histimg = 0;
CvHistogram *hist = 0;
int hdims = 256; // Divide Number of HIST, the more the accurator
float hranges_arr[] = {0,255};
float* hranges = hranges_arr;
int bin_w;
float max_val;
int i;
src = workImg;
cvNamedWindow( "Histogram", 0 );
hist = cvCreateHist( 1, &hdims, CV_HIST_ARRAY, &hranges, 1 ); // Create Hist
histimg = cvCreateImage( cvSize(320,200), 8, 3 );
cvZero( histimg );
cvCalcHist( &src, hist, 0, 0 ); // Caculate Hist
cvGetMinMaxHistValue( hist, 0, &max_val, 0, 0 ); // just wanna the Max
cvConvertScale( hist->bins, hist->bins,
max_val ? 255. / max_val : 0., 0 ); // resize bin to [0,255]
cvZero( histimg );
bin_w = histimg->width / hdims;
// Draw It
for( i = 0; i < hdims; i++ )
{
double val = ( cvGetReal1D(hist->bins,i)*histimg->height/255 );
CvScalar color = CV_RGB(255,255,0); //(hsv2rgb(i*180.f/hdims);
cvRectangle( histimg, cvPoint(i*bin_w,histimg->height),
cvPoint((i+1)*bin_w,(int)(histimg->height - val)),
color, 1, 8, 0 );
}
cvShowImage( "Histogram", histimg );
cvReleaseImage( &histimg );
cvReleaseHist ( &hist );
cvWaitKey(0);
cvDestroyWindow("Histogram");
}
void Widget::zhifangtu(IplImage *hist_img)
{
IplImage *histimg = 0;
CvHistogram *hist = 0; //直方图
int hdims=255;
float hranges_arr[] = {0,255};
float* hranges = hranges_arr;
int bin_w;
float max_val,min_val;
int i;
cvNamedWindow( "Histogram", 0 );
// cvNamedWindow( "src", 0);
hist = cvCreateHist( 1, &hdims, CV_HIST_ARRAY, &hranges, 1 ); //创建直方图
histimg = cvCreateImage( cvSize(320,200), 8, 3 );
cvZero( histimg ); //清零
cvCalcHist( &hist_img, hist, 0, 0 ); // 计算直方图,即每个bin的大小
cvGetMinMaxHistValue( hist, &min_val, &max_val, 0, 0 ); // 只找最大值
cvThreshHist(hist,50);
//qDebug("max:%4.2f",max_val);
//qDebug("min:%4.2f",min_val);
cvConvertScale( hist->bins,hist->bins, max_val ? 255. / max_val : 0., 0 ); // 缩放 bin 到区间 [0,255]
cvZero( histimg );
bin_w = histimg->width / hdims; // hdims: 直方图竖条的个数，则 bin_w 为条的宽度
// 画直方图
for( i = 0; i < hdims; i++ )
{
double val = ( cvGetReal1D(hist->bins,i)*histimg->height/255 );
CvScalar color = CV_RGB(255,255,0); //(hsv2rgb(i*180.f/hdims);
cvRectangle( histimg, cvPoint(i*bin_w,histimg->height),
cvPoint((i+1)*bin_w,(int)(histimg->height - val)),
color, 1, 8, 0 );
}
// cvShowImage( "src", hue);
cvShowImage( "Histogram", histimg );
cv::waitKey(0);
// cvDestroyWindow("src");
cvDestroyWindow("Histogram");
//cvReleaseImage( &src );
cvReleaseImage( &histimg );
cvReleaseHist ( &hist );
}
void initTracking(camshift * cs, IplImage * img, CvRect * faceRect)
{
float maxVal = 0.f;
updateHueImage(cs, img);
cvSetImageROI( cs->hueImg, *faceRect );
cvSetImageROI( cs->mask, *faceRect );
cvCalcHist( &cs->hueImg, cs->hist, 0, cs->mask );
cvGetMinMaxHistValue( cs->hist, 0, &maxVal, 0, 0 );
cvConvertScale( cs->hist->bins, cs->hist->bins,
maxVal? 255.0/maxVal : 0, 0 );
cvResetImageROI( cs->hueImg );
cvResetImageROI( cs->mask );
cs->prevFaceRect = *faceRect;
}
IplImage* drawHistogram(CvHistogram* hist)
{
// Scale
int scaleX = 2;
int scaleY = 2;
float histMax = 0;
cvGetMinMaxHistValue(hist, 0, &histMax, 0, 0);
// create blank image
IplImage* imgHist = cvCreateImage(cvSize(256*scaleX, 64*scaleY), 8 ,1);
cvZero(imgHist);
// iterate thro' bins and render out graphics...
int i=0;
for(i=0;i<255;i++)
{
float histValue = cvQueryHistValue_1D(hist, i);
float nextValue = cvQueryHistValue_1D(hist, i+1);
CvPoint pt1 = cvPoint(i*scaleX, 64*scaleY);
CvPoint pt2 = cvPoint(i*scaleX+scaleX, 64*scaleY);
CvPoint pt3 = cvPoint(i*scaleX+scaleX, (64-nextValue*64/histMax)*scaleY);
CvPoint pt4 = cvPoint(i*scaleX, (64-histValue*64/histMax)*scaleY);
int numPts = 5;
CvPoint pts[] = {pt1, pt2, pt3, pt4, pt1};
cvFillConvexPoly(imgHist, pts, numPts, cvScalar(255,0,0,0),8,0);
}
return imgHist;
}
// ######################################################################
void VisualTracker::setTargets(const Image<byte>& grey, const Image<byte>& target)
{
#ifdef HAVE_OPENCV
if (itsInitTracker)
initTracker(grey.getDims());
IplImage* currentImg = img2ipl(grey);
cvCalcHist( ¤tImg, itsObjectHist );
float max_val = 0.f;
cvGetMinMaxHistValue(itsObjectHist, 0, &max_val, 0, 0 );
cvConvertScale( itsObjectHist->bins, itsObjectHist->bins, max_val ? 255. / max_val : 0., 0 );
itsTargetTempl = target;
#endif
}
/* Create a camshift tracked object from a region in image. */
TrackedObj* FaceBl0r::create_tracked_object (IplImage* image, CvRect* region) {
TrackedObj* obj;
//allocate memory for tracked object struct
if((obj = (TrackedObj *) malloc(sizeof *obj)) != NULL) {
//create-image: size(w,h), bit depth, channels
obj->hsv = cvCreateImage(cvGetSize(image), 8, 3);
obj->mask = cvCreateImage(cvGetSize(image), 8, 1);
obj->hue = cvCreateImage(cvGetSize(image), 8, 1);
obj->prob = cvCreateImage(cvGetSize(image), 8, 1);
int hist_bins = 30; //number of histogram bins
float hist_range[] = {0,180}; //histogram range
float* range = hist_range;
obj->hist = cvCreateHist(1, //number of hist dimensions
&hist_bins, //array of dimension sizes
CV_HIST_ARRAY, //representation format
&range, //array of ranges for bins
1); //uniformity flag
}
//create a new hue image
update_hue_image(image, obj);
float max_val = 0.f;
//create a histogram representation for the face
cvSetImageROI(obj->hue, *region);
cvSetImageROI(obj->mask, *region);
cvCalcHist(&obj->hue, obj->hist, 0, obj->mask);
cvGetMinMaxHistValue(obj->hist, 0, &max_val, 0, 0 );
cvConvertScale(obj->hist->bins, obj->hist->bins,
max_val ? 255.0/max_val : 0, 0);
cvResetImageROI(obj->hue);
cvResetImageROI(obj->mask);
//store the previous face location
obj->prev_rect = *region;
return obj;
}
void CamShift::CalcHistogram(const ImgBgr& img, const CRect& sel)
{
selection.x = sel.left;
selection.y = img.Height()-sel.bottom-1;
selection.width = sel.Width();
selection.height = sel.Height();
cvCopy(ImgIplImage(img), image, 0 );
cvCvtColor( image, hsv, CV_BGR2HSV );
cvFlip(hsv,hsv,0);
//cvSaveImage("hsv.bmp", hsv);
//cvSaveImage("img.bmp", image);
int _vmin = vmin, _vmax = vmax;
cvInRangeS( hsv, cvScalar(0,smin,MIN(_vmin,_vmax),0),
cvScalar(180,256,MAX(_vmin,_vmax),0), mask );
cvSplit( hsv, hue, 0, 0, 0 );
float max_val = 0.f;
cvSetImageROI(hue, selection );
cvSetImageROI( mask, selection );
cvCalcHist( &hue, hist, 0, mask );
cvGetMinMaxHistValue( hist, 0, &max_val, 0, 0 );
cvConvertScale( hist->bins, hist->bins, max_val ? 255. / max_val : 0., 0 );
cvResetImageROI( hue );
cvResetImageROI( mask );
track_window = selection;
// cvZero( histimg );
// int bin_w = histimg->width / hdims;
// for(int i = 0; i < hdims; i++ )
// {
// int a = cvGetReal1D(hist->bins,i);
// int val = cvRound( cvGetReal1D(hist->bins,i)*histimg->height/255 );
// CvScalar color = hsv2rgb(i*180.f/hdims);
// cvRectangle( histimg, cvPoint(i*bin_w,histimg->height),
// cvPoint((i+1)*bin_w,histimg->height - val),
// color, -1, 8, 0 );
// }
// cvNamedWindow( "Histogram", 1 );
//
// cvShowImage( "Histogram", histimg );
}
//////////////////////////////////
// startTracking()
//
void startTracking(IplImage * pImg, CvRect * pFaceRect)
{
float maxVal = 0.f;
// Make sure internal data structures have been allocated
if( !pHist ) createTracker(pImg);
// Create a new hue image
updateHueImage(pImg);
// Create a histogram representation for the face
cvSetImageROI( pHueImg, *pFaceRect );
cvSetImageROI( pMask, *pFaceRect );
cvCalcHist( &pHueImg, pHist, 0, pMask );
cvGetMinMaxHistValue( pHist, 0, &maxVal, 0, 0 );
cvConvertScale( pHist->bins, pHist->bins, maxVal? 255.0/maxVal : 0, 0 );
cvResetImageROI( pHueImg );
cvResetImageROI( pMask );
// Store the previous face location
prevFaceRect = *pFaceRect;
}
IplImage* th_plot_hist(CvHistogram* hist, int bins, const char* windowName, CvScalar lineColor) {
th_create_image(&histImg, cvSize(512, 512 * 0.6), 8, 3);
float xStep = histImg->width / bins;
CvPoint p0, p1;
cvSet(histImg, th_black, 0x0);
float max_value = 0;
cvGetMinMaxHistValue(hist, 0, &max_value, 0, 0);
int i;
for (i = 1; i < bins; i++) {
float v0 = cvGetReal1D(hist->bins, i - 1) / max_value * histImg->height;
float v1 = cvGetReal1D(hist->bins, i) / max_value * histImg->height;
p0 = cvPoint((i - 1) * xStep, histImg->height - v0);
p1 = cvPoint(i * xStep, histImg->height - v1);
cvLine(histImg, p0, p1, lineColor, 2, 8, 0);
}
//cvhPutText(histImg, "hello", cvPoint(33, 33), cvScalar(0xff, 0, 0xff, 0));
cvShowImage(windowName, histImg);
return histImg;
}
void BoatDetecting::startTrackObject(){
cvInRangeS(hsv, cvScalar(0, smin, MIN(vmin, vmax), 0), cvScalar(180, 256, MAX(vmin, vmax), 0), mask);
// 10,256,30
cvSplit(hsv, hue, 0, 0, 0);
if (!isTrackingInitialized){ // 如果跟踪窗口未初始化
float max_val = 0.f;
cvSetImageROI(hue, selection);
cvSetImageROI(mask, selection);
cvCalcHist(&hue, hist, 0, mask);
cvGetMinMaxHistValue(hist, 0, &max_val, 0, 0);
cvConvertScale(hist->bins, hist->bins, max_val ? 255. / max_val : 0., 0);
cvResetImageROI(hue);
cvResetImageROI(mask);
trackWindow = selection;
isTrackingInitialized = true;
}
cvCalcBackProject(&hue, backproject, hist);
//cvShowImage("Hue Channel",backproject);
cvAnd(backproject, mask, backproject, 0);
//if (trackWindow.x + trackWindow.width/2< allfWidth &&trackWindow.y + trackWindow.height/2< allfHeight &&trackWindow.x>0)
if (trackWindow.x + trackWindow.width< allfWidth &&trackWindow.y + trackWindow.height< allfHeight &&trackWindow.x>0)
cvCamShift(backproject, trackWindow, cvTermCriteria(CV_TERMCRIT_EPS | CV_TERMCRIT_ITER, 20, 1), &trackComp, 0);//初始化跟踪窗口以后直接用trackWindow做跟踪，每帧都会更新
//if (trackComp.rect.width<90 && trackComp.rect.y<200){
// trackWindow = trackComp.rect;
//}
//if (trackComp.rect.y>200)
//{
// trackWindow = trackComp.rect;
//}
trackWindow = trackComp.rect;
}
// ------------------------------------------------------------------------
void LABHistogram2D::Draw(IplImage* frame, int scale, CvPoint p) {
int iscale = scale, jscale = scale;
if (scale == 0) {
iscale = frame->width/a_bins;
jscale = frame->height/b_bins;
}
else {
iscale = scale; jscale = scale;
}
float min_val = 0, max_val = 0;
cvGetMinMaxHistValue( h, &min_val, &max_val, 0, 0 );
for(int i=0; i<a_bins;i++ )
{
for(int j=0; j<b_bins;j++ )
{
float bin_val = cvQueryHistValue_2D( h, i, j );
int index = (int)(NTEMPERATURES*(bin_val-min_val-1)/(max_val-min_val));
cvRectangle( frame, cvPoint( p.x+i*iscale, p.y+j*jscale ),
cvPoint( (i+1)*iscale - 1 + p.x, (j+1)*jscale - 1 + p.y),
CV_RGB(HEAT_COLOR[index].R, HEAT_COLOR[index].G, HEAT_COLOR[index].B), CV_FILLED );
}
}
}
void CamShift::Track(IplImage *frame, CvRect &selection, bool calc_hist)
{
int i, bin_w, c;
cvCvtColor( frame, _hsv, CV_BGR2HSV );
cvInRangeS( _hsv, cvScalar(0,_smin,MIN(_vmin,_vmax),0),
cvScalar(180,256,MAX(_vmin,_vmax),0), _mask );
cvSplit( _hsv, _hue, 0, 0, 0 );
if(calc_hist)
{
float max_val = 0.f;
cvSetImageROI( _hue, selection );
cvSetImageROI( _mask, selection );
cvCalcHist( &_hue, _hist, 0, _mask );
cvGetMinMaxHistValue( _hist, 0, &max_val, 0, 0 );
cvConvertScale( _hist->bins, _hist->bins, max_val ? 255. / max_val : 0., 0 );
cvResetImageROI( _hue );
cvResetImageROI( _mask );
_track_window = selection;
}
cvCalcBackProject( &_hue, _backproject, _hist );
cvAnd( _backproject, _mask, _backproject, 0 );
cvCamShift( _backproject, _track_window,
cvTermCriteria( CV_TERMCRIT_EPS | CV_TERMCRIT_ITER, 10, 1 ),
&_track_comp, &_track_box );
_track_window = _track_comp.rect;
if( frame->origin )
_track_box.angle = -_track_box.angle;
selection = cvRect(_track_box.center.x-_track_box.size.width/2, _track_box.center.y-_track_box.size.height/2,
selection.width, selection.height);
}
QRect WebCamData::detectFace(const char* faceData)
{
if (d->hasFace) {
trackFace();
return QRect();
}
if (!d->mCascade) {
qDebug() << Q_FUNC_INFO << ": " << "Error incorrect Haar classifier cascade";
return QRect();
}
CvRect* rect = 0;
int faceSize = d->data->width / 5;
d->mFaceSeq = cvHaarDetectObjects(d->data,
d->mCascade, d->mFaceStore, 1.1, 6,
CV_HAAR_DO_CANNY_PRUNING,
cvSize(faceSize, faceSize));
// qDebug() << "Number of Faces Detected" << d->mFaceSeq->total;
if (d->mFaceSeq && d->mFaceSeq->total) {
rect = (CvRect*) cvGetSeqElem(d->mFaceSeq, 0);
d->hasFace = true;
int radius = cvRound((rect->width + rect->height) * 0.25);
CvPoint center;
center.x = cvRound(rect->x + rect->width * 0.5);
center.y = cvRound(rect->y + rect->height * 0.5);
//qDebug() << "Radius : " << radius << " X: " << center.x << "Y : " << center.y;
//histogram
float max = 0.f;
float range[] = {0, 180};
float* ranges = range;
int bins = 30;
d->hsvImage = cvCreateImage(cvGetSize(d->data), 8, 3);
d->hueImage = cvCreateImage(cvGetSize(d->data), 8, 1);
d->mask = cvCreateImage(cvGetSize(d->data), 8, 1);
d->prob = cvCreateImage(cvGetSize(d->data), 8, 1);
d->histogram = cvCreateHist(1, &bins, CV_HIST_ARRAY, &ranges, 1);
updateHugeImage(d->data);
cvSetImageROI(d->hueImage, *rect);
cvSetImageROI(d->mask, *rect);
cvCalcHist(&d->hueImage, d->histogram, 0, d->mask);
cvGetMinMaxHistValue(d->histogram, 0, &max, 0, 0);
cvConvertScale(d->histogram->bins, d->histogram->bins, max ? 255.0 / max : 0, 0);
cvResetImageROI(d->hueImage);
cvResetImageROI(d->mask);
d->faceRect = *rect;
/*
*/
}
return QRect();
}
CV_IMPL double
cvCalcGlobalOrientation( const void* orientation, const void* maskimg, const void* mhiimg,
double curr_mhi_timestamp, double mhi_duration )
{
int hist_size = 12;
cv::Ptr<CvHistogram> hist;
CvMat mhistub, *mhi = cvGetMat(mhiimg, &mhistub);
CvMat maskstub, *mask = cvGetMat(maskimg, &maskstub);
CvMat orientstub, *orient = cvGetMat(orientation, &orientstub);
void* _orient;
float _ranges[] = { 0, 360 };
float* ranges = _ranges;
int base_orient;
float shift_orient = 0, shift_weight = 0;
float a, b, fbase_orient;
float delbound;
CvMat mhi_row, mask_row, orient_row;
int x, y, mhi_rows, mhi_cols;
if( !CV_IS_MASK_ARR( mask ))
CV_Error( CV_StsBadMask, "" );
if( CV_MAT_TYPE( mhi->type ) != CV_32FC1 || CV_MAT_TYPE( orient->type ) != CV_32FC1 )
CV_Error( CV_StsUnsupportedFormat,
"MHI and orientation must be single-channel floating-point images" );
if( !CV_ARE_SIZES_EQ( mhi, mask ) || !CV_ARE_SIZES_EQ( orient, mhi ))
CV_Error( CV_StsUnmatchedSizes, "" );
if( mhi_duration <= 0 )
CV_Error( CV_StsOutOfRange, "MHI duration must be positive" );
if( orient->data.ptr == mhi->data.ptr )
CV_Error( CV_StsInplaceNotSupported, "orientation image must be different from MHI" );
// calculate histogram of different orientation values
hist = cvCreateHist( 1, &hist_size, CV_HIST_ARRAY, &ranges );
_orient = orient;
cvCalcArrHist( &_orient, hist, 0, mask );
// find the maximum index (the dominant orientation)
cvGetMinMaxHistValue( hist, 0, 0, 0, &base_orient );
fbase_orient = base_orient*360.f/hist_size;
// override timestamp with the maximum value in MHI
cvMinMaxLoc( mhi, 0, &curr_mhi_timestamp, 0, 0, mask );
// find the shift relative to the dominant orientation as weighted sum of relative angles
a = (float)(254. / 255. / mhi_duration);
b = (float)(1. - curr_mhi_timestamp * a);
delbound = (float)(curr_mhi_timestamp - mhi_duration);
mhi_rows = mhi->rows;
mhi_cols = mhi->cols;
if( CV_IS_MAT_CONT( mhi->type & mask->type & orient->type ))
{
mhi_cols *= mhi_rows;
mhi_rows = 1;
}
cvGetRow( mhi, &mhi_row, 0 );
cvGetRow( mask, &mask_row, 0 );
cvGetRow( orient, &orient_row, 0 );
/*
a = 254/(255*dt)
b = 1 - t*a = 1 - 254*t/(255*dur) =
(255*dt - 254*t)/(255*dt) =
(dt - (t - dt)*254)/(255*dt);
--------------------------------------------------------
ax + b = 254*x/(255*dt) + (dt - (t - dt)*254)/(255*dt) =
(254*x + dt - (t - dt)*254)/(255*dt) =
((x - (t - dt))*254 + dt)/(255*dt) =
(((x - (t - dt))/dt)*254 + 1)/255 = (((x - low_time)/dt)*254 + 1)/255
*/
for( y = 0; y < mhi_rows; y++ )
{
mhi_row.data.ptr = mhi->data.ptr + mhi->step*y;
mask_row.data.ptr = mask->data.ptr + mask->step*y;
orient_row.data.ptr = orient->data.ptr + orient->step*y;
for( x = 0; x < mhi_cols; x++ )
if( mask_row.data.ptr[x] != 0 && mhi_row.data.fl[x] > delbound )
{
/*
orient in 0..360, base_orient in 0..360
-> (rel_angle = orient - base_orient) in -360..360.
rel_angle is translated to -180..180
*/
float weight = mhi_row.data.fl[x] * a + b;
float rel_angle = orient_row.data.fl[x] - fbase_orient;
rel_angle += (rel_angle < -180 ? 360 : 0);
rel_angle += (rel_angle > 180 ? -360 : 0);
if( fabs(rel_angle) < 45 )
{
shift_orient += weight * rel_angle;
shift_weight += weight;
}
}
}
// add the dominant orientation and the relative shift
if( shift_weight == 0 )
shift_weight = 0.01f;
fbase_orient += shift_orient / shift_weight;
fbase_orient -= (fbase_orient < 360 ? 0 : 360);
fbase_orient += (fbase_orient >= 0 ? 0 : 360);
return fbase_orient;
}
// A Simple Camera Capture Framework
int main() {
CvCapture* capture = cvCaptureFromCAM( 0 );
if( !capture ) {
fprintf( stderr, "ERROR: capture is NULL \n" );
return -1;
}
#ifdef HALF_SIZE_CAPTURE
cvSetCaptureProperty(capture, CV_CAP_PROP_FRAME_WIDTH, 352/2);
cvSetCaptureProperty(capture, CV_CAP_PROP_FRAME_HEIGHT, 288/2);
#endif
// Create a window in which the captured images will be presented
cvNamedWindow( "Source Image Window", CV_WINDOW_AUTOSIZE );
cvNamedWindow( "Back Projected Image", CV_WINDOW_AUTOSIZE );
cvNamedWindow( "Brightness and Contrast Window", CV_WINDOW_AUTOSIZE );
cvNamedWindow( "Blob Output Window", CV_WINDOW_AUTOSIZE );
cvNamedWindow( "Histogram Window", 0);
cvNamedWindow( "Rainbow Window", CV_WINDOW_AUTOSIZE );
// Capture one frame to get image attributes:
source_frame = cvQueryFrame( capture );
if( !source_frame ) {
fprintf( stderr, "ERROR: frame is null...\n" );
return -1;
}
cvCreateTrackbar("histogram\nnormalization", "Back Projected Image", &normalization_sum, 6000, NULL);
cvCreateTrackbar("brightness", "Brightness and Contrast Window", &_brightness, 200, NULL);
cvCreateTrackbar("contrast", "Brightness and Contrast Window", &_contrast, 200, NULL);
cvCreateTrackbar("threshold", "Blob Output Window", &blob_extraction_threshold, 255, NULL);
cvCreateTrackbar("min blob size", "Blob Output Window", &min_blob_size, 2000, NULL);
cvCreateTrackbar("max blob size", "Blob Output Window", &max_blob_size, source_frame->width*source_frame->height/4, NULL);
inputImage = cvCreateImage(cvGetSize(source_frame), IPL_DEPTH_8U, 1);
histAdjustedImage = cvCreateImage(cvGetSize(source_frame), IPL_DEPTH_8U, 1);
outputImage = cvCreateImage(cvGetSize(source_frame), IPL_DEPTH_8U, 3 );
hist_image = cvCreateImage(cvSize(320,200), 8, 1);
rainbowImage = cvCreateImage(cvGetSize(source_frame), IPL_DEPTH_8U, 3 );
// object that will contain blobs of inputImage
CBlobResult blobs;
CBlob my_enumerated_blob;
cvInitFont(&font, CV_FONT_HERSHEY_SIMPLEX|CV_FONT_ITALIC, hScale, vScale, 0, lineWidth);
// Some brightness/contrast stuff:
bright_cont_image = cvCloneImage(inputImage);
lut_mat = cvCreateMatHeader( 1, 256, CV_8UC1 );
cvSetData( lut_mat, lut, 0 );
while( 1 ) {
// Get one frame
source_frame = cvQueryFrame( capture );
if( !source_frame ) {
fprintf( stderr, "ERROR: frame is null...\n" );
getchar();
break;
}
cvShowImage( "Source Image Window", source_frame );
// Do not release the frame!
cvCvtColor(source_frame, inputImage, CV_RGB2GRAY);
// Histogram Stuff!
my_hist = cvCreateHist(1, hist_size_array, CV_HIST_ARRAY, ranges, 1);
cvCalcHist( &inputImage, my_hist, 0, NULL );
cvNormalizeHist(my_hist, normalization_sum);
// NOTE: First argument MUST have an ampersand, or a segmentation fault will result
cvCalcBackProject(&inputImage, histAdjustedImage, my_hist);
// Histogram Picture
int bin_w;
float max_value = 0;
cvGetMinMaxHistValue( my_hist, 0, &max_value, 0, 0 );
cvScale( my_hist->bins, my_hist->bins, ((double)hist_image->height)/max_value, 0 );
cvSet( hist_image, cvScalarAll(255), 0 );
bin_w = cvRound((double)hist_image->width/hist_size);
for(int i = 0; i < hist_size; i++ )
cvRectangle( hist_image, cvPoint(i*bin_w, hist_image->height), cvPoint((i+1)*bin_w, hist_image->height - cvRound(cvGetReal1D(my_hist->bins,i))), cvScalarAll(0), -1, 8, 0 );
cvShowImage( "Histogram Window", hist_image );
cvShowImage("Back Projected Image", histAdjustedImage);
// Brightness/contrast loop stuff:
int brightness = _brightness - 100;
int contrast = _contrast - 100;
/*
* The algorithm is by Werner D. Streidt
* (http://visca.com/ffactory/archives/5-99/msg00021.html)
*/
if( contrast > 0 ) {
double delta = 127.*contrast/100;
double a = 255./(255. - delta*2);
double b = a*(brightness - delta);
for(int i = 0; i < 256; i++ )
{
int v = cvRound(a*i + b);
if( v < 0 ) v = 0;
if( v > 255 ) v = 255;
lut[i] = (uchar)v;
}
}
else {
double delta = -128.*contrast/100;
double a = (256.-delta*2)/255.;
double b = a*brightness + delta;
for(int i = 0; i < 256; i++ ) {
int v = cvRound(a*i + b);
if( v < 0 )
v = 0;
if( v > 255 )
v = 255;
lut[i] = (uchar)v;
}
}
cvLUT( inputImage, bright_cont_image, lut_mat );
cvShowImage( "Brightness and Contrast Window", bright_cont_image);
// ---------------
// Blob Manipulation Code begins here:
// Extract the blobs using a threshold of 100 in the image
blobs = CBlobResult( bright_cont_image, NULL, blob_extraction_threshold, true );
// discard the blobs with less area than 5000 pixels
// ( the criteria to filter can be any class derived from COperadorBlob )
blobs.Filter( blobs, B_INCLUDE, CBlobGetArea(), B_GREATER_OR_EQUAL, min_blob_size);
blobs.Filter( blobs, B_EXCLUDE, CBlobGetArea(), B_GREATER, max_blob_size);
// build an output image equal to the input but with 3 channels (to draw the coloured blobs)
cvMerge( bright_cont_image, bright_cont_image, bright_cont_image, NULL, outputImage );
// plot the selected blobs in a output image
for (int i=0; i < blobs.GetNumBlobs(); i++) {
blobs.GetNthBlob( CBlobGetArea(), i, my_enumerated_blob );
// Color 5/6 of the color wheel (300 degrees)
my_enumerated_blob.FillBlob( outputImage, cv_hsv2rgb((float)i/blobs.GetNumBlobs() * 300, 1, 1));
}
// END Blob Manipulation Code
// ---------------
sprintf(str, "Count: %d", blobs.GetNumBlobs());
cvPutText(outputImage, str, cvPoint(50, 25), &font, cvScalar(255,0,255));
cvShowImage("Blob Output Window", outputImage);
/*
// Rainbow manipulation:
for (int i=0; i < CV_CAP_PROP_FRAME_WIDTH; i++) {
for (int j=0; j < CV_CAP_PROP_FRAME_HEIGHT; j++) {
// This line is not figure out yet...
// pixel_color_set = ((uchar*)(rainbowImage->imageData + rainbowImage->widthStep * j))[i * 3]
((uchar*)(rainbowImage->imageData + rainbowImage->widthStep * j))[i * 3] = 30;
((uchar*)(rainbowImage->imageData + rainbowImage->widthStep * j))[i * 3 + 1] = 30;
((uchar*)(rainbowImage->imageData + rainbowImage->widthStep * j))[i * 3 + 2] = 30;
}
}
cvShowImage("Rainbow Window", rainbowImage);
*/
//If ESC key pressed, Key=0x10001B under OpenCV 0.9.7(linux version),
//remove higher bits using AND operator
if( (cvWaitKey(10) & 255) == 27 ) break;
}
cvReleaseImage(&inputImage);
cvReleaseImage(&histAdjustedImage);
cvReleaseImage(&hist_image);
cvReleaseImage(&bright_cont_image);
cvReleaseImage(&outputImage);
cvReleaseImage(&rainbowImage);
// Release the capture device housekeeping
cvReleaseCapture( &capture );
cvDestroyAllWindows();
return 0;
}
//=========================================
CvRect camKalTrack(IplImage* frame, camshift_kalman_tracker& camKalTrk) {
//=========================================
if (!frame)
printf("Input frame empty!\n");
cvCopy(frame, camKalTrk.image, 0);
cvCvtColor(camKalTrk.image, camKalTrk.hsv, CV_BGR2HSV); // BGR to HSV
if (camKalTrk.trackObject) {
int _vmin = vmin, _vmax = vmax;
cvInRangeS(camKalTrk.hsv, cvScalar(0, smin, MIN(_vmin,_vmax), 0), cvScalar(180, 256, MAX(_vmin,_vmax), 0), camKalTrk.mask); // MASK
cvSplit(camKalTrk.hsv, camKalTrk.hue, 0, 0, 0); // HUE
if (camKalTrk.trackObject < 0) {
float max_val = 0.f;
boundaryCheck(camKalTrk.originBox, frame->width, frame->height);
cvSetImageROI(camKalTrk.hue, camKalTrk.originBox); // for ROI
cvSetImageROI(camKalTrk.mask, camKalTrk.originBox); // for camKalTrk.mask
cvCalcHist(&camKalTrk.hue, camKalTrk.hist, 0, camKalTrk.mask); //
cvGetMinMaxHistValue(camKalTrk.hist, 0, &max_val, 0, 0);
cvConvertScale(camKalTrk.hist->bins, camKalTrk.hist->bins, max_val ? 255. / max_val : 0., 0); // bin [0,255]
cvResetImageROI(camKalTrk.hue); // remove ROI
cvResetImageROI(camKalTrk.mask);
camKalTrk.trackWindow = camKalTrk.originBox;
camKalTrk.trackObject = 1;
camKalTrk.lastpoint = camKalTrk.predictpoint = cvPoint(camKalTrk.trackWindow.x + camKalTrk.trackWindow.width / 2,
camKalTrk.trackWindow.y + camKalTrk.trackWindow.height / 2);
getCurrState(camKalTrk.kalman, camKalTrk.lastpoint, camKalTrk.predictpoint);//input curent state
}
//(x,y,vx,vy),
camKalTrk.prediction = cvKalmanPredict(camKalTrk.kalman, 0);//predicton=kalman->state_post
camKalTrk.predictpoint = cvPoint(cvRound(camKalTrk.prediction->data.fl[0]), cvRound(camKalTrk.prediction->data.fl[1]));
camKalTrk.trackWindow = cvRect(camKalTrk.predictpoint.x - camKalTrk.trackWindow.width / 2, camKalTrk.predictpoint.y
- camKalTrk.trackWindow.height / 2, camKalTrk.trackWindow.width, camKalTrk.trackWindow.height);
camKalTrk.trackWindow = checkRectBoundary(cvRect(0, 0, frame->width, frame->height), camKalTrk.trackWindow);
camKalTrk.searchWindow = cvRect(camKalTrk.trackWindow.x - region, camKalTrk.trackWindow.y - region, camKalTrk.trackWindow.width + 2
* region, camKalTrk.trackWindow.height + 2 * region);
camKalTrk.searchWindow = checkRectBoundary(cvRect(0, 0, frame->width, frame->height), camKalTrk.searchWindow);
cvSetImageROI(camKalTrk.hue, camKalTrk.searchWindow);
cvSetImageROI(camKalTrk.mask, camKalTrk.searchWindow);
cvSetImageROI(camKalTrk.backproject, camKalTrk.searchWindow);
cvCalcBackProject( &camKalTrk.hue, camKalTrk.backproject, camKalTrk.hist ); // back project
cvAnd(camKalTrk.backproject, camKalTrk.mask, camKalTrk.backproject, 0);
camKalTrk.trackWindow = cvRect(region, region, camKalTrk.trackWindow.width, camKalTrk.trackWindow.height);
if (camKalTrk.trackWindow.height > 5 && camKalTrk.trackWindow.width > 5) {
// calling CAMSHIFT
cvCamShift(camKalTrk.backproject, camKalTrk.trackWindow, cvTermCriteria(CV_TERMCRIT_EPS | CV_TERMCRIT_ITER, 10, 1),
&camKalTrk.trackComp, &camKalTrk.trackBox);
/*cvMeanShift( camKalTrk.backproject, camKalTrk.trackWindow,
cvTermCriteria( CV_TERMCRIT_EPS | CV_TERMCRIT_ITER, 10, 1 ),
&camKalTrk.trackComp);*/
}
else {
camKalTrk.trackComp.rect.x = 0;
camKalTrk.trackComp.rect.y = 0;
camKalTrk.trackComp.rect.width = 0;
camKalTrk.trackComp.rect.height = 0;
}
cvResetImageROI(camKalTrk.hue);
cvResetImageROI(camKalTrk.mask);
cvResetImageROI(camKalTrk.backproject);
camKalTrk.trackWindow = camKalTrk.trackComp.rect;
camKalTrk.trackWindow = cvRect(camKalTrk.trackWindow.x + camKalTrk.searchWindow.x, camKalTrk.trackWindow.y
+ camKalTrk.searchWindow.y, camKalTrk.trackWindow.width, camKalTrk.trackWindow.height);
camKalTrk.measurepoint = cvPoint(camKalTrk.trackWindow.x + camKalTrk.trackWindow.width / 2, camKalTrk.trackWindow.y
+ camKalTrk.trackWindow.height / 2);
camKalTrk.realposition->data.fl[0] = camKalTrk.measurepoint.x;
camKalTrk.realposition->data.fl[1] = camKalTrk.measurepoint.y;
camKalTrk.realposition->data.fl[2] = camKalTrk.measurepoint.x - camKalTrk.lastpoint.x;
camKalTrk.realposition->data.fl[3] = camKalTrk.measurepoint.y - camKalTrk.lastpoint.y;
camKalTrk.lastpoint = camKalTrk.measurepoint;//keep the current real position
//measurement x,y
cvMatMulAdd( camKalTrk.kalman->measurement_matrix/*2x4*/, camKalTrk.realposition/*4x1*/,/*measurementstate*/0, camKalTrk.measurement );
cvKalmanCorrect(camKalTrk.kalman, camKalTrk.measurement);
cvRectangle(frame, cvPoint(camKalTrk.trackWindow.x, camKalTrk.trackWindow.y), cvPoint(camKalTrk.trackWindow.x
+ camKalTrk.trackWindow.width, camKalTrk.trackWindow.y + camKalTrk.trackWindow.height), CV_RGB(255,128,0), 4, 8, 0);
}
// set new selection if it exists
if (camKalTrk.selectObject && camKalTrk.selection.width > 0 && camKalTrk.selection.height > 0) {
cvSetImageROI(camKalTrk.image, camKalTrk.selection);
cvXorS(camKalTrk.image, cvScalarAll(255), camKalTrk.image, 0);
cvResetImageROI(camKalTrk.image);
}
return camKalTrk.trackWindow;
}
int main( int argc, char** argv ) {
IplImage* src;
if( argc == 2 && (src=cvLoadImage(argv[1], 1))!= 0) {
// Compute the HSV image, and decompose it into separate planes.
//
IplImage* hsv = cvCreateImage( cvGetSize(src), 8, 3 );
cvCvtColor( src, hsv, CV_BGR2HSV );
IplImage* h_plane = cvCreateImage( cvGetSize(src), 8, 1 );
IplImage* s_plane = cvCreateImage( cvGetSize(src), 8, 1 );
IplImage* v_plane = cvCreateImage( cvGetSize(src), 8, 1 );
IplImage* planes[] = { h_plane, s_plane };
cvCvtPixToPlane( hsv, h_plane, s_plane, v_plane, 0 );
// Build the histogram and compute its contents.
//
int h_bins = 30, s_bins = 32;
CvHistogram* hist;
{
int hist_size[] = { h_bins, s_bins };
float h_ranges[] = { 0, 180 }; // hue is [0,180]
float s_ranges[] = { 0, 255 };
float* ranges[] = { h_ranges, s_ranges };
hist = cvCreateHist(
2,
hist_size,
CV_HIST_ARRAY,
ranges,
1
);
}
cvCalcHist( planes, hist, 0, 0 );
// Create an image to use to visualize our histogram.
//
int scale = 10;
IplImage* hist_img = cvCreateImage(
cvSize( h_bins * scale, s_bins * scale ),
8,
3
);
cvZero( hist_img );
// populate our visualization with little gray squares.
//
float max_value = 0;
cvGetMinMaxHistValue( hist, 0, &max_value, 0, 0 );
for( int h = 0; h < h_bins; h++ ) {
for( int s = 0; s < s_bins; s++ ) {
float bin_val = cvQueryHistValue_2D( hist, h, s );
int intensity = cvRound( bin_val * 255 / max_value );
cvRectangle(
hist_img,
cvPoint( h*scale, s*scale ),
cvPoint( (h+1)*scale - 1, (s+1)*scale - 1),
CV_RGB(intensity,intensity,intensity),
CV_FILLED
);
}
}
cvNamedWindow( "Source", 1 );
cvShowImage( "Source", src );
cvNamedWindow( "H-S Histogram", 1 );
cvShowImage( "H-S Histogram", hist_img );
cvWaitKey(0);
}
}