l1benchmark程序用于解决L1范数优化问题-this l1benchmark codes is design to solve L1 constrain problem

利用GMS对特征点匹配进行约束，降低误匹配率，代码包含python版本，C++版本，matlab版本。(GMS is used to constrain the matching of feature points to reduce the error matching rate. The code includes Python version, C + + version and Matlab version.)