Similarity measure is usually used to study the similar degree between multisource data, which is the basis of patternrecognition on spatial data.
相似性度量是用于研究多源数据之间相似程度的，是对空间数据进行模式识别的基础。
2
In this paper, two methods of realizing optical patternrecognition, spatial matched filter correlation and joint transform correlation (JTC), were discussed first with the emphasis on the JTC.
本文首先论述了实现光学模式识别的两种方案，空间匹配滤波相关识别和联合变换相关识别的原理和技术。
3
The fractional Fourier transform contains the spatial information and the spatial-frequency information simultaneously. The fractional correlation can be used to optical patternrecognition too.