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A human visual system model (HVS model) is used by image processing, video processing and computer vision experts to deal with biological and psychological processes that are not yet fully understood. Such a model is used to simplify the behaviors of what is a very complex system. As our knowledge of the true visual system improves, the model ...
The visual system also has several non-image forming visual functions, independent of visual perception, including the pupillary light reflex and circadian photoentrainment. This article describes the human visual system, which is representative of mammalian vision, and to a lesser extent the vertebrate visual system.
Visual information fidelity (VIF) is a full reference image quality assessment index based on natural scene statistics and the notion of image information extracted by the human visual system. [1] It was developed by Hamid R Sheikh and Alan Bovik at the Laboratory for Image and Video Engineering (LIVE) at the University of Texas at Austin in 2006.
The human vision system (HVS) processes color information (hue and colorfulness) at about a third of the resolution of luminance (lightness/darkness information in an image). Therefore it is possible to sample color information at a lower resolution while maintaining good image quality.
PSNR-HVS [12] is an extension of PSNR that incorporates properties of the human visual system such as contrast perception. PSNR-HVS-M improves on PSNR-HVS by additionally taking into account visual masking. [13] In a 2007 study, it delivered better approximations of human visual quality judgements than PSNR and SSIM by large margin.
Chromatic adaptation is the human visual system’s ability to adjust to changes in illumination in order to preserve the appearance of object colors. It is responsible for the stable appearance of object colors despite the wide variation of light which might be reflected from an object and observed by our eyes.
A.CCTV video quality with fully integrated Human Visual System (HVS) based quality assurance that allows for a controlled degradation of Quality of Experience (QoE). — Preceding unsigned comment added by 213.182.142.242 ( talk ) 08:34, 18 December 2012 (UTC) [ reply ]
Download as PDF; Printable version; In other projects ... Human visual system model; HVS, a 1980s German human-powered aircraft; HVS Global Hospitality Services ...