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- Human_visual_system_model abstract "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 behaviours of what is a very complex system. As our knowledge of the true visual system improves, the model is updated.It is common to think of "taking advantage" of the HVS model to produce desired effects. Examples of taking advantage of an HVS model include colour television. Originally it was thought that colour television required too high a bandwidth for the then available technology. Then it was noticed that the colour resolution of the HVS was much lower than the brightness resolution; this allowed colour to be squeezed into the signal by chroma subsampling. Another example is image compression, like JPEG. Our HVS model says that we cannot see high frequency detail so in JPEG we can quantise these components without a perceptible loss of quality. Similar concepts are applied in audio compression, where sound frequencies inaudible to humans are bandstop filtered.Several HVS features are derived from evolution, when we needed to defend ourselves or hunt for food. We often see demonstrations of HVS features when we are looking at optical illusions.".
- Human_visual_system_model wikiPageID "15728786".
- Human_visual_system_model wikiPageRevisionID "546519927".
- Human_visual_system_model hasPhotoCollection Human_visual_system_model.
- Human_visual_system_model notable "October 2008".
- Human_visual_system_model refimprove "October 2008".
- Human_visual_system_model subject Category:Image_processing.
- Human_visual_system_model comment "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 behaviours of what is a very complex system. As our knowledge of the true visual system improves, the model is updated.It is common to think of "taking advantage" of the HVS model to produce desired effects.".
- Human_visual_system_model label "Human visual system model".
- Human_visual_system_model sameAs m.03nrdpm.
- Human_visual_system_model sameAs Q5939193.
- Human_visual_system_model sameAs Q5939193.
- Human_visual_system_model wasDerivedFrom Human_visual_system_model?oldid=546519927.
- Human_visual_system_model isPrimaryTopicOf Human_visual_system_model.