The shifting gamma perception


Besuijen, J. (2005) The shifting gamma perception. Color Research & Application, 30 (5). pp. 332-340. ISSN 0361-2317

[img] PDF
Restricted to UT campus only
: Request a copy
Abstract:True to life, color display and color management depend on a proper technical model of the display used. Current gamma models and fitting procedures are not accurate in modeling the lower part of the tone reproduction curve. The GOG- and GOGO-model used in color management standards tend to clip the luminance to zero for digital values were luminance can be seen and measured. Two improvements to the models are suggested. First, the models should be fitted by optimizing the root mean square error (RMSE) of the CIE lightness instead of the luminance. Second, a shifting gamma model is adopted, with gamma increasing in value for lower voltages. Results show that the adapted models correspond better with the luminance measurements. The clipping values are nearer to the measured zero luminance threshold, and the average RMSE and ΔEab over the whole scale are smaller
Item Type:Article
Copyright:© 2005 Wiley InterScience
Research Group:
Link to this item:
Official URL:
Export this item as:BibTeX
HTML Citation
Reference Manager


Repository Staff Only: item control page

Metis ID: 225346