Local region image retrieval(LRIR) is a special type of image retrieval(IR), the aim is to find an image that con- tains the same or similar region with the query region from a database.In a regular IR system, global descriptors lack the ability to find patch-level matches between images. As a result, it is difficult to retrieve images based on partial matching.这句话有错吗？

这句话没有错误。Local region image retrieval(LRIR) 是一种特殊的图像检索(IR)，目的是在数据库中找到与查询区域相同或相似的区域的图像。在常规 IR 系统中，全局描述符缺乏寻找图像之间块级匹配的能力。因此，基于部分匹配检索图像是困难的。