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A tone mapping operator based on neural and psychophysical models of visual perception
- Source :
- Recercat. Dipósit de la Recerca de Catalunya, instname, Human Vision and Electronic Imaging
- Publisher :
- Society of Photo Optical Instrumentation Engineers (SPIE)
-
Abstract
- High dynamic range imaging techniques involve capturing and storing real world radiance values that span many orders of magnitude. However, common display devices can usually reproduce intensity ranges only up to two to three orders of magnitude. Therefore, in order to display a high dynamic range image on a low dynamic range screen, the dynamic range of the image needs to be compressed without losing details or introducing artefacts, and this process is called tone mapping. A good tone mapping operator must be able to produce a low dynamic range image that matches as much as possible the perception of the real world scene. We propose a two stage tone mapping approach, in which the first stage is a global method for range compression based on a gamma curve that equalizes the lightness histogram the best, and the second stage performs local contrast enhancement and color induction using neural activity models for the visual cortex. © (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only. This work was supported by the European Research Council, Starting Grant ref. 306337, by the Spanish government, grant ref. TIN2012-38112, and by the Icrea Academia Award.
- Subjects :
- Lightness
Visual perception
Computer science
ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION
Neural model
02 engineering and technology
Tone mapping
Psychophysical model
Display device
High-dynamic-range imaging
Histogram
0202 electrical engineering, electronic engineering, information engineering
High dynamic range
Computer vision
business.industry
Dynamic range
020207 software engineering
Low dynamic range
Gamma correction
Radiance
020201 artificial intelligence & image processing
Artificial intelligence
business
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Recercat. Dipósit de la Recerca de Catalunya, instname, Human Vision and Electronic Imaging
- Accession number :
- edsair.doi.dedup.....be80dbe867d9784ced17ee55c4af1027