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下视景像匹配技术是项自主定位技术，良好的景像匹配算法是保证下视景像匹配系统性能的关键，如何评价下视景像匹配算法的性能是当前急需探讨的问题。文章分析了现有的评估方法及其缺陷，并对试验分析的方法进行了研究，设计了下视景像匹配算法的评估系统。
The next scene matching technology is an autonomous positioning technology. A good scene matching algorithm is the key to ensure the performance of the next scene matching system. How to evaluate the performance of the next scene matching algorithm is an urgent problem to be explored. The article analyzes the existing evaluation methods and their defects, and studies the methods of the experimental analysis, and designs the evaluation system of the next visual matching algorithm.