Retrieval performance includes evaluation of recall ratio, precision ratio, speed of retrieval, cost and convemence etc.

检索性能主要包括查全率、查准率、检索速度、费用与方便性等指标。

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And based on this, this paper discusses on the similarity measuring and corresponding image retrieval techniques, and gives the evaluation on the test results and the image retrieval performance.

在此基础上，讨论了图像的相似度量以及相应的图像检索技术，并给出了实验结果和图像检索性能的评价。

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