Inesperadas sombras coloreadasmás allá de la simples mezclas aditivas de color
- J.L. Nieves 1
- J. A. García 1
- J. Romero 1
- 1 Universidad de Granada
ISSN: 2171-8814
Year of publication: 2015
Issue Title: International Year of Light
Volume: 48
Issue: 2
Pages: 153-158
Type: Article
More publications in: Óptica pura y aplicada
Abstract
The aim of this work was to clarify the difference between two color phenomena: the shadow color, which adds color to the shadows, and the colored shadows, which appears due to the context effect on the color perception. A laboratory photograph is introduced to illustrate the colored shadow effect and how this perceptual effect cannot be explained using classical colorimetry. A yellow colored shadow is observed when two separate white and blue lights illuminate a blank screen and an obstacle occludes part of the light impinging on the screen, and the Retinex Theory is used to explain that phenomenon.