Low-frequency MTF estimation for digital imaging devices using slanted-edge analysis

Don Williams; Peter D. Burns

doi:10.1117/12.532405

18 December 2003 Low-frequency MTF estimation for digital imaging devices using slanted-edge analysis

Don Williams, Peter D. Burns

Proceedings Volume 5294, Image Quality and System Performance; (2003) https://doi.org/10.1117/12.532405
Event: Electronic Imaging 2004, 2004, San Jose, California, United States

Abstract

Modulation transfer function (MTF) metrology and interpretation for digital image capture devices has usually concentrated on mid- to high-frequency information, relative to the half-sampling frequency. These regions typically quantify characteristics and operations such as sharpening, limiting resolution, and aliasing. However, a potential wealth of low-frequency, visually significant information is often masked in existing measurement results because of spatial data truncation. For print or document scanners, this influences measurements in the spatial frequency range of 0 to 2.0 cycles/mm, where the effects of veiling flare, micro flare, and integrating cavity effect (ICE) often manifest themselves. Using a form of edge-gradient analysis based on slanted edges, we present a method for measurement of these characteristics. By carefully adapting this well-established technique, these phenomena can be quantified. We also show how, in many cases, these effects can be treated as other spread-function or device-MTF components. The theory and field metrology of several devices using the adapted technique are also presented.

Citation Download Citation

Don Williams and Peter D. Burns "Low-frequency MTF estimation for digital imaging devices using slanted-edge analysis", Proc. SPIE 5294, Image Quality and System Performance, (18 December 2003); https://doi.org/10.1117/12.532405

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available