1. Accurate display gamma functions based on human observation
- Author
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Alessandro Artusi, Attila Neumann, Werner Purgathofer, László Neumann, Georg Zotti, and Ministerio de Ciencia y Tecnología (Espanya)
- Subjects
Scale (ratio) ,business.industry ,Computer science ,General Chemical Engineering ,Human Factors and Ergonomics ,Terminals de pantalla de visualització ,General Chemistry ,Display device ,Information display systems ,Measurement device ,Video display terminals ,Human visual system model ,Visualització (Informàtica) ,Computer vision ,Tone reproduction ,Artificial intelligence ,Gamma function ,business ,Numerical stability - Abstract
This article describes an accurate method to obtain the tone reproduction curve of display devices without using a measurement device. It is an improvement of an existing technique based on human observation, solving its problem of numerical instability and resulting in functions in log - log scale which correspond better to the nature of display devices. We demonstrate the efficiency of our technique on different monitor technologies, comparing it with direct measurements using a spectrophotometer Contract grant sponsor: European Union (Real Reflect Project); Contract grant number: IST-2001-34744. Contract grant sponsor: Spanish Government; Contract grant number: TIC2001-2416-C03-01. Contract grant sponsor: Research Promotion Foundation (Cyprus IPE Project); Contract grant number: PLHRO/1104/21
- Published
- 2007