int ImageRep::MeanHsv(const IntRect& rRect, int channel) const
{
assert(rRect.XMin() >= 0 && rRect.YMin() >= 0 && rRect.XMax() <= m_images[0].cols && rRect.YMax() <= m_images[0].rows);
int sum_v = m_integralHsvImages[channel].at<int>(rRect.YMin(), rRect.XMin()) + m_integralHsvImages[channel].at<int>(rRect.YMax(), rRect.XMax()) -
m_integralHsvImages[channel].at<int>(rRect.YMax(), rRect.XMin()) - m_integralHsvImages[channel].at<int>(rRect.YMin(), rRect.XMax());
return sum_v / rRect.Area();
}
int ImageRep::Sum(const IntRect& rRect, int channel) const
{
assert(rRect.XMin() >= 0 && rRect.YMin() >= 0 && rRect.XMax() <= m_images[0].cols && rRect.YMax() <= m_images[0].rows);
return m_integralImages[channel].at<int>(rRect.YMin(), rRect.XMin()) +
m_integralImages[channel].at<int>(rRect.YMax(), rRect.XMax()) -
m_integralImages[channel].at<int>(rRect.YMax(), rRect.XMin()) -
m_integralImages[channel].at<int>(rRect.YMin(), rRect.XMax());
}
void ImageRep::Hist(const IntRect& rRect, Eigen::VectorXd& h) const
{
assert(rRect.XMin() >= 0 && rRect.YMin() >= 0 && rRect.XMax() <= m_images[0].cols && rRect.YMax() <= m_images[0].rows);
int norm = rRect.Area();
for (int i = 0; i < kNumBins; ++i)
{
int sum = m_integralHistImages[i].at<int>(rRect.YMin(), rRect.XMin()) +
m_integralHistImages[i].at<int>(rRect.YMax(), rRect.XMax()) -
m_integralHistImages[i].at<int>(rRect.YMax(), rRect.XMin()) -
m_integralHistImages[i].at<int>(rRect.YMin(), rRect.XMax());
h[i] = (float)sum/norm;
}
}
