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Proceedings Paper

Measuring the modulation transfer function of image capture devices: what do the numbers really mean?
Author(s): Xujie Zhang; Tamar Kashti; Dror Kella; Tal Frank; Doron Shaked; Robert Ulichney; Mani Fischer; Jan P. Allebach
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Paper Abstract

The modulation transfer function (MTF) is a fundamental tool for assessing the performance of imaging systems. It has been applied to a range of capture and output devices, including printers and even the media itself. In this paper, we consider the problem of measuring the MTF of image capture devices. We analyze the factors that limit the MTF of a capture device. Then, we examine three different approaches to this task based, respectively, on a slant-edge target, a sinewave target, and a grill pattern. We review the mathematical relationship between the three different methods, and discuss their comparative advantages and disadvantages. Finally, we present experimental results for MTF measurement with a number of different commercially available image capture devices that are specifically designed for capture of 2D reflection or transmission copy. These include camera-based systems, flat-bed scanners, and a drum scanner.

Paper Details

Date Published: 24 January 2012
PDF: 11 pages
Proc. SPIE 8293, Image Quality and System Performance IX, 829307 (24 January 2012); doi: 10.1117/12.912989
Show Author Affiliations
Xujie Zhang, Purdue Univ. (United States)
Tamar Kashti, Hewlett-Packard Indigo Ltd. (Israel)
Dror Kella, Hewlett-Packard Indigo Ltd. (Israel)
Tal Frank, Hewlett-Packard Indigo Ltd. (Israel)
Doron Shaked, Hewlett-Packard Labs. Israel Ltd. (Israel)
Robert Ulichney, Hewlett-Packard Labs. (United States)
Mani Fischer, Hewlett-Packard Labs. Israel Ltd. (Israel)
Jan P. Allebach, Purdue Univ. (United States)

Published in SPIE Proceedings Vol. 8293:
Image Quality and System Performance IX
Frans Gaykema; Peter D. Burns, Editor(s)

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