ofVec2f Simple3DTracker::_predictNextPosition(ofVec2f currentPosition, float* minCost)
{
int bestx = currentPosition.x, besty = currentPosition.y;
float bestcost = 9999999, cost, distance;
const float alpha = _weightedMatchingCoefficient;
if(!_template || !_tmp || !_tmp2)
return currentPosition;
// template matching
IplImage* haystack = _cameraImage();
cvMatchTemplate(haystack, _template->getCvImage(), _tmp2, CV_TM_CCOEFF);
cvNormalize(_tmp2, _tmp2, 1.0, 0.0, CV_MINMAX);
// find the best match
for(int y = 0; y < _tmp2->height; y++) {
const float *src = (const float*)(_tmp2->imageData + y * _tmp2->widthStep);
unsigned char *dst = (unsigned char*)(_tmp->getCvImage()->imageData + y * _tmp->getCvImage()->widthStep);
for(int x = 0; x < _tmp2->width; x++) {
dst[x] = (unsigned char)(src[x] * 255.0f);
distance = currentPosition.distance(ofVec2f(x, y));
if(distance <= _lookupRadius) {
cost = (alpha * (1.0f - src[x])) + ((1.0f - alpha) * distance / _lookupRadius);
if(cost <= bestcost) { // weighted matching
bestx = x;
besty = y;
bestcost = cost;
}
}
}
}
_tmp->flagImageChanged();
// get the resulting position...
ofVec2f result(bestx + _template->width/2, besty + _template->height/2);
// return the min cost?
if(minCost)
*minCost = bestcost;
// update the template?
if(result.distance(currentPosition) >= UPDATETPL_MINDIST)
_setTemplate(result);
// done!
return result;
}
SpinBoxField::SpinBoxField() : AbstractField(),
_fieldLabel(new Wt::WText("Campo")),
_fieldInvalidMessage(new Wt::WText("Dados incorretos")),
_fieldInput(new Wt::WSpinBox()){
setEmptyValidator();
_fieldInput->setMinimum(0);
_fieldInput->setWidth(100);
setInvalidMessage("Selecione/Digite um numero valido");
_setTemplate();
_fieldInput->setStyleClass("form-control");
_fieldInvalidMessage->hide();
bindWidget("label", _fieldLabel);
bindWidget("info", _fieldInvalidMessage);
bindWidget("field", _fieldInput);
}
void Simple3DTracker::beginFeatureTracking(ofVec2f featurePosition)
{
_trackedFeatureCurrentPosition = featurePosition;
_setTemplate(featurePosition);
_isTracking = true;
}
