|
|
Colour reproduction accuracy of stochastic spectral sampling: an experimental evaluation.
Hencz, Attila ; Wilkie, Alexander (advisor) ; Křivánek, Jaroslav (referee)
Title: Colour reproduction accuracy of stochastic spectral sampling: an experi- mental evaluation Author: Bc. Attila Hencz �attila.hencz@matfyz.cz� Department: Department of Software and Computer Science Education Supervisor: doc. Alexander Wilkie, Dr. �wilkie@cgg.mff.cuni.cz�, Department of Software and Computer Science Education Abstract: We investigate the colorimetric accuracy of stochastic sampling in the wavelength domain for realistic rendering purposes. In particular, we consider the impact of three specific design choices in a rendering system on the accuracy of the overall result: how exactly spectral samples are splatted into the final result spectrum, how many spectral channels one uses in the result images, and the impact of Hero Wavelength Spectral Sampling (HWSS) compared to the stand- ard monochrome technique. We provide experimental results, comparisons and evaluation of sampling high-resolution spectra that originate from measurements of real paint samples found in colour atlases, and normed light sources defined by the CIE. The latter include both smooth and spiky spectra, so the used com- bination of reflectances and light spectra provides a representative body of input values that allows to draw conclusions that are relevant for practical rendering work. Keywords: physically based image...
|
|
|
Colour reproduction accuracy of stochastic spectral sampling: an experimental evaluation.
Hencz, Attila ; Wilkie, Alexander (advisor) ; Křivánek, Jaroslav (referee)
Title: Colour reproduction accuracy of stochastic spectral sampling: an experi- mental evaluation Author: Bc. Attila Hencz �attila.hencz@matfyz.cz� Department: Department of Software and Computer Science Education Supervisor: doc. Alexander Wilkie, Dr. �wilkie@cgg.mff.cuni.cz�, Department of Software and Computer Science Education Abstract: We investigate the colorimetric accuracy of stochastic sampling in the wavelength domain for realistic rendering purposes. In particular, we consider the impact of three specific design choices in a rendering system on the accuracy of the overall result: how exactly spectral samples are splatted into the final result spectrum, how many spectral channels one uses in the result images, and the impact of Hero Wavelength Spectral Sampling (HWSS) compared to the stand- ard monochrome technique. We provide experimental results, comparisons and evaluation of sampling high-resolution spectra that originate from measurements of real paint samples found in colour atlases, and normed light sources defined by the CIE. The latter include both smooth and spiky spectra, so the used com- bination of reflectances and light spectra provides a representative body of input values that allows to draw conclusions that are relevant for practical rendering work. Keywords: physically based image...
|
|
|
A Colour Matching Application for Mobile Devices
Zikmund, Martin ; Wilkie, Alexander (advisor) ; Beneš, Jan (referee)
A mobile application that provides matching functionality between different industrially used colour atlases is presented. The focus of the application is not accurate display of the colours in the atlases, although this is attempted to within the limits of mobile device display technology. Rather, for a given entry into one particular colour atlas, an easy and intuitive way of choosing the closest possible colour from some other colour system is provided. This sort of functionality, which is not available elsewhere, is based on spectral measurements of several thousand colour atlas samples that are available to the app developer. This unique dataset makes such an application possible, which has the potential to be a highly useful niche tool for designers who work with such industrial colour atlas systems. Powered by TCPDF (www.tcpdf.org)
|
guest ::
