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Demosaicing images from colour cameras for digital image correlation

Forsey, A. and Gungor, S. (2016). Demosaicing images from colour cameras for digital image correlation. Optics and lasers in engineering, 86 pp. 20–28.

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DOI (Digital Object Identifier) Link: https://doi.org/10.1016/j.optlaseng.2016.05.006
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Abstract

Digital Image Correlation is not the intended use for consumer colour cameras, but with care they can be successfully employed in such a role. The main obstacle is the sparsely sampled colour data caused by the use of a colour filter array (CFA) to separate the colour channels. It is shown that the method used to convert consumer camera raw files into a monochrome image suitable for digital image correlation (DIC) can have a significant effect on the DIC output. A number of widely available software packages and two in-house methods are evaluated in terms of their performance when used with DIC. Using an in-plane rotating disc to produce a highly constrained displacement field, it was found that the bicubic spline based in-house demosaicing method outperformed the other methods in terms of accuracy and aliasing suppression.

Item Type: Journal Item
Copyright Holders: 2016 Elsevier
ISSN: 0143-8166
Keywords: Digital image correlation; Demosaicing; Colour filter array; Colour camera
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 46479
Depositing User: Alex Forsey
Date Deposited: 02 Jun 2016 09:21
Last Modified: 23 May 2017 09:55
URI: http://oro.open.ac.uk/id/eprint/46479
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