University College London
Display technology is advancing quickly with peak luminance increasing significantly, enabling high-dynamic-range displays. However, perceptual color appearance under extended luminance levels has not been studied, mainly due to the unavailability of psychophysical data. Therefore, we conduct a psychophysical study in order to acquire appearance data for many different luminance levels (up to 16,860 cd/m2 ) covering most of the dynamic range of the human visual system. These experimental data allow us to quantify human color perception under extended luminance levels, yielding a generalized color appearance model. Our proposed appearance model is efficient, accurate and invertible. It can be used to adapt the tone and color of images to different dynamic ranges for cross-media reproduction while maintaining appearance that is close to human perception.
Min H. Kim, Tim Weyrich, Jan Kautz.
ACM Transactions on Graphics (Proc. SIGGRAPH), Vol. 28, No. 3, pp. 27:1–27:9, New Orleans, LA, 2009.Min H. Kim, Tim Weyrich, and Jan Kautz. Modeling human color perception under extended luminance levels. ACM Trans. on Graphics (Proc. SIGGRAPH), 28(3):27:1–27:9, 2009.Kim, M. H., Weyrich, T., and Kautz, J. 2009. Modeling human color perception under extended luminance levels. ACM Trans. on Graphics (Proc. SIGGRAPH) 28, 3, 27:1–27:9.M. H. Kim, T. Weyrich, and J. Kautz, “Modeling human color perception under extended luminance levels,” ACM Trans. on Graphics (Proc. SIGGRAPH), vol. 28, no. 3, pp. 27:1–27:9, 2009. [Online]. Available: http://doi.acm.org/10.1145/1531326.1531333
We would like to thank our participants for their tremendous effort, Prof. Zhaoping Li for the use of her laboratory, and Martin Parsley and James Tompkin for proof-reading. We would like to express gratitude to the anonymous reviewers for their valuable comments.