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Proceedings Paper

Evaluating the quality of EDOF in camera phones
Author(s): Kalin Atanassov; Sergio Goma
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Paper Abstract

Extended Depth of Focus technologies are well known in the literature, and in recent years this technology has made its way into camera phones. While the fundamental approach might have significant advantages over conventional technologies, often in practice, it turns out the results can be accompanied by undesired artifacts that are hard to quantify. In order to conduct an objective comparison with the conventional focus technology, new methods need to be devised that are able to quantify not only the quality of focus but also the artifacts introduced by the use of EDOF methods. In this paper we propose a test image and a methodology to quantify focus quality and its dependence on the distance. Our test image is created from a test image element that contains different shapes to measure frequency response.

Paper Details

Date Published: 18 January 2010
PDF: 11 pages
Proc. SPIE 7529, Image Quality and System Performance VII, 75290K (18 January 2010); doi: 10.1117/12.839101
Show Author Affiliations
Kalin Atanassov, Qualcomm, Inc. (United States)
Sergio Goma, Qualcomm, Inc. (United States)

Published in SPIE Proceedings Vol. 7529:
Image Quality and System Performance VII
Susan P. Farnand; Frans Gaykema, Editor(s)

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