Opencv HOG (Histogram of Orientation Gradient) training based on Dalal method. When you try to use Opencv HOG, you may not know how the training of the SVM model is done. Here is the example Linux with Opencv2.1

自己用libsvm封的svm matlab,有例子 不错的源码 很好(Own use libsvm SVM of matlab, a good example of the source code is very good)