· 2014· Book chapter
Personal Communication
- 3,824citations
- 2014year
Short summary
A novel two-dimensional method is presented to determine lightness from image intensity by exploiting differences in the spatial distribution of reflectance and illumination components.
AI-generated from the title and abstract; the full text is not read.
Key points
- Introduces a two-dimensional method to derive lightness from image intensity.
- Distinguishes between reflectance and illumination based on their spatial distribution.
- Method is relevant to Land's retinex theory of color vision.
- Physical models and computer simulations are presented.
AI-generated from the title and abstract; the full text is not read.
Abstract
A method lor the determination of lightness from image intensity is presented. For certain classes ot images, lightness corresponds to reflectance, while image intensity is the product of reflectance and illumination intensity. The method is two-dimensional and depends on the different spatial distribution of these two components of image intensity. Such a lightness-judging process is required for Land's retinex theory of color vision. A number of physical models are developed and computer simulation of the process is demonstrated. This work should be of interest to designers of image processing hardward, cognitive psychologists dealing with the human visual system and neurophysiologists concerned with the function of structures in the primate retina. LIGHTNESS: DEFINITION "The relative degree to which an ohject reflects light." The Random House Dictionary "The attrihute of " ohject colors by which the object appears to reflect or transmit more or less of the incident light."
The authors' abstract, as published at the source., 2014 · DOI ↗
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Field: Computational Theory and Mathematics
Computational Theory and MathematicsComputer Science