This disclosure provides a system for classifying images, used in image detection, image recognition, or other computer vision. The system processes directory images to obtain eigenvectors and eigenvalues, and selects a set of "smooth" basis vectors formed by linear combinations of these eigenvectors...http://www.google.com.tw/patents/US6501857?utm_source=gb-gplus-share專利 US6501857 - Method and system for detecting and classifying objects in an image
