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Proceedings Paper

Description of texture loss using the dead leaves target: current issues and a new intrinsic approach
Author(s): Leonie Kirk; Philip Herzer; Uwe Artmann; Dietmar Kunz
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Paper Abstract

The computing power in modern digital imaging devices allows complex denoising algorithms. The negative in uence of denoising on the reproduction of low contrast, ne details is also known as texture loss. Using the dead leaves structure is a common technique to describe the texture loss which is currently discussed as a standard method in workgroups of ISO and CPIQ. We present our experience using this method. Based on real camera data of several devices, we can point out where weak points in the SFRDeadLeaves method are and why results should be interpreted carefully. The SFRDeadLeaves approach follows the concept of a semi-reference method, so statistical characteristics of the target are compared to statistical characteristics in the image. In the case of SFRDeadLeaves, the compared characteristic is the power spectrum. The biggest disadvantage of using the power spectrum is that phase information is ignored, as only the complex modulus is used. We present a new approach, our experience with it and compare it to the SFR Dead Leaves method. The new method follows the concept of a full-reference method, which is an intrinsic comparison of image data to reference data.

Paper Details

Date Published: 7 March 2014
PDF: 9 pages
Proc. SPIE 9023, Digital Photography X, 90230C (7 March 2014); doi: 10.1117/12.2039689
Show Author Affiliations
Leonie Kirk, Image Engineering GmbH and Co. KG (Germany)
Philip Herzer, Image Engineering GmbH and Co. KG (Germany)
Uwe Artmann, Image Engineering GmbH and Co. KG (Germany)
Dietmar Kunz, Cologne Univ. of Applied Sciences (Germany)

Published in SPIE Proceedings Vol. 9023:
Digital Photography X
Nitin Sampat; Radka Tezaur; Sebastiano Battiato; Boyd A. Fowler, Editor(s)

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