Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Journal of the Optical Society of Korea
  • Vol. 19,
  • Issue 5,
  • pp. 456-466
  • (2015)

Optimized Optomechanical Anti-Aliasing Filter for Digital Camera Photography

Open Access Open Access

Abstract

We investigated an anti-aliasing (AA) filter for digital camera photography by which the excessively high-frequency components of the image signal are suppressed to avoid the aliasing effect. Our optomechanical AA filter was implemented by applying rapid relative motions to the imaging sensor. By the engineered motion blur of the mechanical dithers, the effective point-spread function (PSF) of the imaging system could be tailored to reject the unwanted high-frequency components of the image. For optimal operations, we developed a spiral filter motion protocol that could produce a Gaussian-like PSF. We experimentally demonstrated that our AA filter provides an improved filtering characteristic with a better compromise of the rejection performance and the signal loss. We also found that the pass band characteristic can be enhanced further by a color-differential acquisition mode. Our filter scheme provides a useful method of digital photography for low-error image measurements as well as for ordinary photographic applications where annoying <TEX>$moir{\acute{e}}$</TEX> patterns must be suppressed efficiently.

© 2015 Optical Society of Korea

PDF Article
More Like This
Digital camera simulation

Joyce E. Farrell, Peter B. Catrysse, and Brian A. Wandell
Appl. Opt. 51(4) A80-A90 (2012)

Deep camera obscura: an image restoration pipeline for pinhole photography

Joshua D. Rego, Huaijin Chen, Shuai Li, Jinwei Gu, and Suren Jayasuriya
Opt. Express 30(15) 27214-27235 (2022)

Cited By

Optica participates in Crossref's Cited-By Linking service. Citing articles from Optica Publishing Group journals and other participating publishers are listed here.


Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved