inline float HOGEvaluator::Feature :: calc( int offset ) const
{
float res = CALC_SUM(pF, offset);
float normFactor = CALC_SUM(pN, offset);
res = (res > 0.001f) ? (res / ( normFactor + 0.001f) ) : 0.f;
return res;
}
inline float HaarEvaluator::Feature :: calc( int offset ) const
{
float ret = rect[0].weight * CALC_SUM(p[0], offset) + rect[1].weight * CALC_SUM(p[1], offset);
if( rect[2].weight != 0.0f )
ret += rect[2].weight * CALC_SUM(p[2], offset);
return ret;
}
bool HaarEvaluator::setWindow( Point pt )
{
if( pt.x < 0 || pt.y < 0 ||
pt.x + origWinSize.width >= sum.cols ||
pt.y + origWinSize.height >= sum.rows )
return false;
size_t pOffset = pt.y * (sum.step/sizeof(int)) + pt.x;
size_t pqOffset = pt.y * (sqsum.step/sizeof(double)) + pt.x;
int valsum = CALC_SUM(p, pOffset);
double valsqsum = CALC_SUM(pq, pqOffset);
double nf = (double)normrect.area() * valsqsum - (double)valsum * valsum;
if( nf > 0. )
nf = std::sqrt(nf);
else
nf = 1.;
varianceNormFactor = 1./nf;
offset = (int)pOffset;
return true;
}
