Dears:
I find the normalization to a rectangle of Viola-Jones object detection discard one pixel from all boundary, as below.
bool HaarEvaluator::read(const FileNode& node, Size _origWinSize) {
....
normrect = Rect(1, 1, origWinSize.width - 2, origWinSize.height - 2);
Do you know why to do it?
How to prove it is better than taking the whole rectangle into consideration?
Thanks