外文题目: On the difference between single- and double-sided bandpass filtering of spatial frequencies
作者: Yang, Xin; Jia, Wei; Wu, Di; Poon, Ting-Chung
刊名: Opt. Commun.
年: 2017 卷: 384 页： 71--77
英文关键词:
Spatial filtering; Analog optical image processing; Image enhancement
HILBERT TRANSFORM; OBJECTS
英文摘要:
It is well-known that bandpass filtering will lead to edge extraction in image processing. However, the difference between single-and double-sided bandpass filtering has never been compared and investigated in the literature. We investigate the difference between single-and double-sided bandpass spatial filtering in a 4-f coherent optical image processing system. We find that single-sided filtering can approximate the operation of a first-order derivative, while double-sided filtering gives a second-order derivative. Simulations and optical experiments confirm our findings.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1016/j.optcom.2016.10.010


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