void DrawRectangle(uint8_t *frame,unsigned int *initialCoordinates,char colour)
{
//colour 0-red,1-green,2-blue;
unsigned int StartYpoint,StartXpoint;
unsigned int r=0,c=0;
StartYpoint=MyRound(initialCoordinates[0]-windowSize/2);
StartXpoint=MyRound(initialCoordinates[1]-windowSize/2);
for(r=StartYpoint;r<=StartYpoint+windowSize;r++)
for(c=StartXpoint;c<=StartXpoint+windowSize;c++)
if ((r==StartYpoint)||(r==StartYpoint+windowSize)||(c==StartXpoint)||(c==StartXpoint+windowSize))
{
*(frame+(r*QVGA_WIDTH+c)*3+colour)=255;
*(frame+(r*QVGA_WIDTH+c)*3+colour+1)=0;
*(frame+(r*QVGA_WIDTH+c)*3+colour+2)=0;
}
}
void GrabImage(uint8_t *frame,unsigned int *initialCoordinates,unsigned char *rgbCropedImage)
{
unsigned int StartYpoint;
unsigned int StartXpoint;
unsigned int r,rl;
unsigned int c,cl;
unsigned int pixGlobalImage;
unsigned int pixLocalImage;
StartYpoint=MyRound(initialCoordinates[0]-windowSize/2);
StartXpoint=MyRound(initialCoordinates[1]-windowSize/2);
for(r=StartYpoint,rl=0;r<StartYpoint+windowSize;r++,rl++)
for(c=StartXpoint,cl=0;c<StartXpoint+windowSize;c++,cl++)
{
pixGlobalImage=(r*QVGA_WIDTH+c)*3;
pixLocalImage=(rl*windowSize+cl)*3;
*(rgbCropedImage+pixLocalImage)=*(frame+pixGlobalImage);
*(rgbCropedImage+pixLocalImage+1)=*(frame+pixGlobalImage+1);
*(rgbCropedImage+pixLocalImage+2)=*(frame+pixGlobalImage+2);
}
}
void MeanShiftVectEstimate(unsigned int *initialCoordinates,unsigned int *currentCoordinates,unsigned int *templateHistogram,unsigned int *candidateHistogram,unsigned char *filteredCandidateImage)
{
unsigned char CenterY=(windowSize/2);
unsigned char CenterX=(windowSize/2);
unsigned char r,c;
unsigned char PixValue;
unsigned int pixValTempl;
unsigned int pixValCand;
double wi;
double Wi[windowSize*windowSize]={0};
double SumWiY=0;
double SumWiX=0;
double WiSum=0;
double MhY=0;
double MhX=0;
for(r=1;r<windowSize;r++) //niama smisul da izchisliawam stoinostite za r=0 i c=0 sled kato niama da giizpolzwam sled towa
for(c=1;c<windowSize;c++)
{
wi=0;
PixValue=*(filteredCandidateImage+r*windowSize+c);
pixValTempl=templateHistogram[PixValue];
pixValCand=candidateHistogram[PixValue];
if(pixValCand==0)
{
wi=0;
}
else
{
wi=sqrt((float)pixValTempl/(float)pixValCand);
}
*(Wi+r*windowSize+c)=wi;
}
for(r=1;r<windowSize;r++) // celta e simetria (1:39) wmesto (0:39) ili (1:40)(ako ciklite zapochwat s r=0 i c=0 i izpozlwam (CenterY-r+1) i (c-CenterX+1))
{
for(c=1;c<windowSize;c++)
{
SumWiY+=(*(Wi+r*windowSize+c))*(CenterY-r);//(CenterY-r)
SumWiX+=(*(Wi+r*windowSize+c))*(c-CenterX);//(c-CenterX)
}
}
for(r=1;r<windowSize;r++) // sled kato w predhodnia cikul izchisliawam SumWiY i SumWiX ot r=1 i c=1 triabwa i WiSum da se izchisliawa ot r=1 i c=1
for(c=1;c<windowSize;c++) // dori ne samo che e logichno a i rezultatite ot proslediawaneto sa po-dobri
{
WiSum+=(*(Wi+r*windowSize+c));
}
if(WiSum==0)
{
MhY=0;
MhX=0;
}
else
{
//MhY=SumWiY/WiSum;
//MhX=SumWiX/WiSum;
//printf("SumWiY/WiSum: %f\n",SumWiY/WiSum);
//printf("SumWiX/WiSum: %f\n",SumWiX/WiSum);
if((SumWiY/WiSum<0.1)||(SumWiX/WiSum<0.1))
{
MhY=10*SumWiY/WiSum;
MhX=10*SumWiX/WiSum;
}
if((SumWiY/WiSum>0.1)||(SumWiX/WiSum>0.1))
{
MhY=30*SumWiY/WiSum;
MhX=30*SumWiX/WiSum;
}
}
*currentCoordinates=MyRound((*initialCoordinates)-MhY);//-
*(currentCoordinates+1)=MyRound((*(initialCoordinates+1))+MhX);//+
}
us10 us10::operator*(double _l) {us10 ret; ret.v=MyRound(v*_l); return ret;};
