非常好用的利用Haar小波提取目标区域的方法，可用于人脸检测，兴趣区(ROI)提取，显著点检测等-Very useful to use Haar wavelet method of extracting the target region can be used for face detection, interest area (ROI) extraction, salient points detection

Detecting, identifying, and recognizing salient regions or feature points in images is a very important and fundamental problem to the computer vision and robotics community. Tasks like landmark detection and visual odometry, but also object re