角点检测，友情链接一下，这是别人写的： http://hi.baidu.com/xiaoduo170/blog/item/2816460175c8330779ec2c64.html -Corner detection, Links about, which is written by someone else: http://hi.baidu.com/xiaoduo170/blog/item/2816460175c8330779ec2c64.html

基于SIFT+Kmeans+LDA的图片分类器的实现源码。 博文参考：http://www.cnblogs.com/freedomshe/archive/2012/04/24/2468747.html-The pictures classifier based on SIFT, Kmeans and LDA. Blog Reference: http://www.cnblogs.com/freedomshe/archive/2012/04/24/2468747.html