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Color demosaicing using structural instability
Blekinge Institute of Technology, Faculty of Computing, Department of Creative Technologies.
Blekinge Institute of Technology, Faculty of Computing, Department of Computer Science and Engineering.
Sony Mobile Communications AB, SWE.
2016 (English)In: Proceedings - 2016 IEEE International Symposium on Multimedia, ISM 2016, Institute of Electrical and Electronics Engineers (IEEE), 2016, 541-544 p.Conference paper, Published paper (Refereed)
Abstract [en]

This paper introduces a new metric for approximating structural instability in Bayer image data. We show that the metric can be used to identify and classify validity of color correlation in local image regions. The metric is used to improve interpolation performance of an existing state of-the-art single pass linear demosaicing algorithm, with virtually no impact on computational GPGPU complexity and performance. Using four different image sets, the modification is shown to outperform the original method in terms of visual quality, by having an average increase in PSNR of 0.7 dB in the red, 1.5 dB in the green and 0.6 dB in the blue channel respectively. Because of fewer high-frequency artifacts, the average output data size also decreases by 2.5%. © 2016 IEEE.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2016. 541-544 p.
Keyword [en]
Bayer, Demosaicing, GPGPU, Linear, Structural instability, Program processors
National Category
Computer Systems
Identifiers
URN: urn:nbn:se:bth-14066DOI: 10.1109/ISM.2016.0119ISI: 000399166000109Scopus ID: 2-s2.0-85015170613ISBN: 9781509045709 (print)OAI: oai:DiVA.org:bth-14066DiVA: diva2:1085819
Conference
18th IEEE International Symposium on Multimedia, (ISM), San José, USA
Available from: 2017-03-30 Created: 2017-03-30 Last updated: 2017-06-16Bibliographically approved

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Petersson, StefanGrahn, Håkan

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