Accurate display gamma functions based on human observation

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