人脸识别SDK 采用C++编写，支持两张照片进行比对1:1，以及1：N 人脸搜索，SDK内部自己维护人脸特征数据，支持增、删、查找等操作，上层应用程序只需要关注自己的业务逻辑即可(Face recognition SDK is written in C++, supporting two photos to compare 1:1, and 1:N face search. SDK maintains its face feature data internally, and supports operation such as add, delete, search and so on. The upper application program only needs to focus on its business logic.)