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Colorimetric calibration of high dynamic range images with a ColorChecker chart

Varghese, D and Wanat, R. and Mantiuk, R.K. (2014) Colorimetric calibration of high dynamic range images with a ColorChecker chart. In: HDRi2014 - Second International Conference and SME Workshop on HDR imaging, Sarajevo, Bosnia and Herzegovina 4-5 March, 2014.

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Abstract

Abstract In this paper we assess the quality of colorimetric calibration of HDR images captured using the multi-exposure technique. Three cameras were used to take HDR photographs of 4 scenes containing a color checker chart (X-Rite) and custom color patches. These were also measured using a spectrometer to provide ground truth data. One of the scenes was then used as a training for 2 camera calibration models, one including and one without the black level. The parameters of the models were fitted by optimizing an error function based on the CIE2000 � Ecolor error measure. For the remaining 3 scenes, the accuracy of the fit was verified using the CIE2000 �E error between the measured and predicted color values. Our results indicate that a very good fit can be achieved, in the range of 0.8 to 2.1 �E using the model without black level.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Subjects: Research Publications
Departments: College of Physical and Applied Sciences > School of Computer Science
Date Deposited: 09 Dec 2014 16:33
Last Modified: 23 Sep 2015 02:59
URI: http://e.bangor.ac.uk/id/eprint/419
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