Modified slanted-edge method and multidirectional modulation transfer function estimation | Zendy

Kenichiro Masaoka | Zendy; Takayuki Yamashita | Zendy; Yukihiro Nishida | Zendy; Masayuki Sugawara | Zendy

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Modified slanted-edge method and multidirectional modulation transfer function estimation

Author(s) -

Kenichiro Masaoka,

Takayuki Yamashita,

Yukihiro Nishida,

Masayuki Sugawara

Publication year - 2014

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.22.006040

Subject(s) - optical transfer function , optics , robustness (evolution) , enhanced data rates for gsm evolution , pixel , point spread function , noise (video) , transfer function , computer science , modulation (music) , image (mathematics) , physics , artificial intelligence , acoustics , biochemistry , chemistry , electrical engineering , gene , engineering

The slanted-edge method specified in ISO Standard 12233, which measures the modulation transfer function (MTF) by analyzing an image of a slightly slanted knife-edge target, is not robust against noise because it takes the derivative of each data line in the edge-angle estimation. We propose here a modified method that estimates the edge angle by fitting a two-dimensional function to the image data. The method has a higher accuracy, precision, and robustness against noise than the ISO 12233 method and is applicable to any arbitrary pixel array, enabling a multidirectional MTF estimate in a single measurement of a starburst image.

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