求助：haarcascade_frontalface.xml

hahacao0810

opencv目录\data\haarcascades下有四个：
haarcascade_frontalface_alt_tree.xml
haarcascade_frontalface_default.xml
haarcascade_frontalface_alt.xml
haarcascade_frontalface_alt2.xml
都应用于正面人脸吗？有什么区别呢？^_^

sweetjujube

里面都有注释，如：haarcascade_frontalface_alt_tree.xml
Stump-based 20x20 gentle adaboost frontal face detector.
    This detector uses tree of stage classifiers instead of a cascade
    Created by Rainer Lienhart.
如：haarcascade_frontalface_alt2.xml
    Tree-based 20x20 gentle adaboost frontal face detector.
    Created by Rainer Lienhart.
    stage 20
    tree 1047

hahacao0810

谢谢