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Authors: Sion Hannuna ; Timo Kunkel ; Nantheera Anantrasirichai and Nishan Canagarajah

Affiliation: University of Bristol, United Kingdom

Keyword(s): Plants, Pathology, Colour, Characterisation, MacBeth ColorChecker, Mobile phone, Camera.

Related Ontology Subjects/Areas/Topics: Algorithms and Software Tools ; Bioinformatics ; Biomedical Engineering ; Image Analysis

Abstract: We describe a framework for standardising the colour of plant images taken using both mobile phones and compact cameras. This is with a view to maximising the accuracy of plant pathology diagnosis. Rather than attempt to characterise each camera, we place cheap and easily portable custom colour targets in the scene being captured. We propose a novel weighted least squares formulation for optimising the transformation function deduced for each image, where the relative contribution for each patch is proportional to the number of closely matching pixels in the image to be transformed. We also introduce our custom colour target which has been designed to preferentially map plant colours and facilitate simple automatic extraction from the image being processed. We provide subjective and objective results demonstrating the efficacy of our approach. It is anticipated that the methods described here could be applied to any application where perceptual consistency is of value.

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Paper citation in several formats:
Hannuna, S.; Kunkel, T.; Anantrasirichai, N. and Canagarajah, N. (2011). COLOUR CORRECTION FOR ASSESSING PLANT PATHOLOGY USING LOW QUALITY CAMERAS. In Proceedings of the International Conference on Bioinformatics Models, Methods and Algorithms (BIOSTEC 2011) - BIOINFORMATICS; ISBN 978-989-8425-36-2; ISSN 2184-4305, SciTePress, pages 326-331. DOI: 10.5220/0003291303260331

@conference{bioinformatics11,
author={Sion Hannuna. and Timo Kunkel. and Nantheera Anantrasirichai. and Nishan Canagarajah.},
title={COLOUR CORRECTION FOR ASSESSING PLANT PATHOLOGY USING LOW QUALITY CAMERAS},
booktitle={Proceedings of the International Conference on Bioinformatics Models, Methods and Algorithms (BIOSTEC 2011) - BIOINFORMATICS},
year={2011},
pages={326-331},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003291303260331},
isbn={978-989-8425-36-2},
issn={2184-4305},
}

TY - CONF

JO - Proceedings of the International Conference on Bioinformatics Models, Methods and Algorithms (BIOSTEC 2011) - BIOINFORMATICS
TI - COLOUR CORRECTION FOR ASSESSING PLANT PATHOLOGY USING LOW QUALITY CAMERAS
SN - 978-989-8425-36-2
IS - 2184-4305
AU - Hannuna, S.
AU - Kunkel, T.
AU - Anantrasirichai, N.
AU - Canagarajah, N.
PY - 2011
SP - 326
EP - 331
DO - 10.5220/0003291303260331
PB - SciTePress

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