/**
Sets the unit for the length
*/
void cwUnitValue::setUnit(int unit) {
if(Data->Unit != unit) {
if(isUpdatingValue()) {
//Update the value with a new value
convertToUnit(unit);
}
Data->Unit = unit;
emit unitChanged();
}
}
bool FacemarkKazemiImpl::calcMeanShape (vector< vector<Point2f> >& trainlandmarks,vector<Mat>& trainimages,std::vector<Rect>& faces){
//clear the loaded meanshape
if(trainimages.empty()||trainlandmarks.size()!=trainimages.size()) {
// throw error if no data (or simply return -1?)
CV_ErrorNoReturn(Error::StsBadArg, "Number of images is not equal to corresponding landmarks. Aborting...");
}
meanshape.clear();
vector<Mat> finalimages;
vector< vector<Point2f> > finallandmarks;
float xmean[200] = {0.0};
//array to store mean of y coordinates
float ymean[200] = {0.0};
size_t k=0;
//loop to calculate mean
Mat warp_mat,src,C,D;
vector<Rect> facesp;
Rect face;
for(size_t i = 0;i < trainimages.size();i++){
src = trainimages[i].clone();
//get bounding rectangle of image for reference
//function from facemark class
facesp.clear();
if(!getFaces(src,facesp)){
continue;
}
if(facesp.size()>1||facesp.empty())
continue;
face = facesp[0];
convertToUnit(face,warp_mat);
//loop to bring points to a common reference and adding
for(k=0;k<trainlandmarks[i].size();k++){
Point2f pt=trainlandmarks[i][k];
C = (Mat_<double>(3,1) << pt.x, pt.y, 1);
D = warp_mat*C;
pt.x = float(D.at<double>(0,0));
pt.y = float(D.at<double>(1,0));
trainlandmarks[i][k] = pt;
xmean[k] = xmean[k]+pt.x;
ymean[k] = ymean[k]+pt.y;
}
finalimages.push_back(trainimages[i]);
finallandmarks.push_back(trainlandmarks[i]);
faces.push_back(face);
}
//dividing by size to get mean and initialize meanshape
for(size_t i=0;i<k;i++){
xmean[i]=xmean[i]/finalimages.size();
ymean[i]=ymean[i]/finalimages.size();
if(xmean[i]>maxmeanx)
maxmeanx = xmean[i];
if(xmean[i]<minmeanx)
minmeanx = xmean[i];
if(ymean[i]>maxmeany)
maxmeany = ymean[i];
if(ymean[i]<minmeany)
minmeany = ymean[i];
meanshape.push_back(Point2f(xmean[i],ymean[i]));
}
trainimages.clear();
trainlandmarks.clear();
trainimages = finalimages;
trainlandmarks = finallandmarks;
finalimages.clear();
finallandmarks.clear();
return true;
}
