
Proceedings Paper
A study of slanted-edge MTF stability and repeatabilityFormat | Member Price | Non-Member Price |
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Paper Abstract
The slanted-edge method of measuring the spatial frequency response (SFR) as an approximation of the modulation transfer function (MTF) has become a well known and widely used image quality testing method over
the last 10 years. This method has been adopted by multiple international standards including ISO and IEEE.
Nearly every commercially available image quality testing software includes the slanted-edge method and there
are numerous open-source algorithms available. This method is one of the most important image quality algorithms in use today. This paper explores test conditions and the impacts they have on the stability and precision
of the slanted-edge method as well as details of the algorithm itself. Real world and simulated data are used
to validate the characteristics of the algorithm. Details of the target such as edge angle and contrast ratio are
tested to determine the impact on measurement under various conditions. The original algorithm defines a near
vertical edge so that errors introduced are minor but the theory behind the algorithm requires a perfectly vertical
edge. A correction factor is introduced as a way to compensate for this problem. Contrast ratio is shown to have
no impact on results in an absence of noise.
Paper Details
Date Published: 8 February 2015
PDF: 9 pages
Proc. SPIE 9396, Image Quality and System Performance XII, 93960L (8 February 2015); doi: 10.1117/12.2077755
Published in SPIE Proceedings Vol. 9396:
Image Quality and System Performance XII
Mohamed-Chaker Larabi; Sophie Triantaphillidou, Editor(s)
PDF: 9 pages
Proc. SPIE 9396, Image Quality and System Performance XII, 93960L (8 February 2015); doi: 10.1117/12.2077755
Show Author Affiliations
Jackson K. M. Roland, Imatest LLC (United States)
Published in SPIE Proceedings Vol. 9396:
Image Quality and System Performance XII
Mohamed-Chaker Larabi; Sophie Triantaphillidou, Editor(s)
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