SURF算法的原文翻译，包括特征提取和特征匹配，加入了作者的一些理解-SURF translation of the original algorithm, including feature extraction and feature matching, adding some understanding of the author

根据国外原文codebook翻译的中文版学习资料，对学习codebook动态背景建模很有帮助-According to foreign original codebook translated Chinese version of the learning materials, learning codebook dynamic background modeling helpful