这是一篇基于局部不变映射的特征描述器算法文章，文章详细介绍了算法原理及应用，对图像图形处理专业人员的重要参考价值！-This is a descr iption of the algorithms based on local invariant map features articles, the article describes in detail the algorithm and applications, an important reference value for the image graphics professionals!