Paper
7 September 2010 Hybrid raised-cosine spiral phase filter for optimized optical image processing with edge enhancement
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Abstract
The authors report experimental results of optical edge enhancement using a modified filter, i.e. hybrid raised-cosine spiral phase filter (SPF). This filter is capable to produce optimized optical image processing results. Comparing with conventional SPF, the proposed filter is able to suppress redundant noise for better contrast and resolution of the edge-enhanced image with improved efficiency. The proposed filtering process is demonstrated using off-axis holograms displayed on a spatial light modulator (SLM) and can be readily incorporated with conventional microscopic system.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ning Zhang and Xiaocong Yuan "Hybrid raised-cosine spiral phase filter for optimized optical image processing with edge enhancement", Proc. SPIE 7797, Optics and Photonics for Information Processing IV, 779717 (7 September 2010); https://doi.org/10.1117/12.861610
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Cited by 1 scholarly publication.
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KEYWORDS
Image filtering

Image enhancement

Image processing

Modulation

Optical filters

Linear filtering

Raised cosine filters

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