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Optical Engineering • Open Access

Sinusoidal Siemens star spatial frequency response measurement errors due to misidentified target centers
Author(s): Gabriel C. Birch; John C. Griffin

Paper Abstract

Numerous methods are available to measure the spatial frequency response (SFR) of an optical system. A recent change to the ISO 12233 photography resolution standard includes a sinusoidal Siemens star test target. We take the sinusoidal Siemens star proposed by the ISO 12233 standard, measure system SFR, and perform an analysis of errors induced by incorrectly identifying the center of a test target. We show a closed-form solution for the radial profile intensity measurement given an incorrectly determined center and describe how this error reduces the measured SFR of the system. Using the closed-form solution, we propose a two-step process by which test target centers are corrected and the measured SFR is restored to the nominal, correctly centered values.

Paper Details

Date Published: 23 July 2015
PDF: 8 pages
Opt. Eng. 54(7) 074104 doi: 10.1117/1.OE.54.7.074104
Published in: Optical Engineering Volume 54, Issue 7
Show Author Affiliations
Gabriel C. Birch, Sandia National Labs. (United States)
John C. Griffin, Sandia National Labs. (United States)

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