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A Qualitative and Quantitative Evaluation of 8 Clear Sky Models

Abstract : We provide a qualitative and quantitative evaluation of 8 clear sky models used in Computer Graphics. We compare the models with each other as well as with measurements and with a reference model from the physics community. After a short summary of the physics of the problem, we present the measurements and the reference model, and how we " invert " it to get the model parameters. We then give an overview of each CG model, and detail its scope, its algorithmic complexity, and its results using the same parameters as in the reference model. We also compare the models with a perceptual study. Our quantitative results confirm that the less simplifications and approximations are used to solve the physical equations, the more accurate are the results. We conclude with a discussion of the advantages and drawbacks of each model, and how to further improve their accuracy.
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https://hal.archives-ouvertes.fr/hal-01417745
Contributor : Eric Bruneton <>
Submitted on : Thursday, December 15, 2016 - 8:46:53 PM
Last modification on : Monday, March 9, 2020 - 7:56:06 PM

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Eric Bruneton. A Qualitative and Quantitative Evaluation of 8 Clear Sky Models. IEEE Transactions on Visualization and Computer Graphics, Institute of Electrical and Electronics Engineers, 2017, IEEE Transactions on Visualization and Computer Graphics, 23 (12), pp.2641 - 2655. ⟨10.1109/TVCG.2016.2622272⟩. ⟨hal-01417745⟩

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