porting cascade model from Matlab to OpenCV

matlab,opencv,matlab-cvst,haar-classifier,cascade-classifier

Yes, you can. If you look at the resulting xml file, you should see a comment at the top telling you which version of OpenCV it is compatible with.

Defining an (initial) set of Haar Like Features

machine-learning,computer-vision,haar-classifier,cascade-classifier

I presume, you're familiar with Viola/Jones original paper on this topic ( http://en.m.wikipedia.org/wiki/Viola–Jones_object_detection_framework ). You start by manually choosing a feature type (e.g. Rectangle A). This gives you a mask with which you can train your weak classifiers. In order to avoid moving the mask pixel by pixel and retraining...

Troubles on training Haar cascade with LBP

c++,opencv,haar-classifier,cascade-classifier,lbph-algorithm

Uninstalling and rebuilding OpenCV solved the problem.