6533b7d7fe1ef96bd1268d78
RESEARCH PRODUCT
Comparison of perceptually uniform quantisation with average error minimisation in image transform coding
Jesús V. AlbertJ. SoretJesús MaloF.j. Ferrisubject
Minimisation (psychology)Image codingbusiness.industryComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONPattern recognitionDomain (mathematical analysis)Image (mathematics)Computer Science::GraphicsComputer Science::SoundComputer Science::MultimediaMetric (mathematics)Limit (mathematics)Artificial intelligenceElectrical and Electronic EngineeringSubjective qualitybusinessTransform codingMathematicsdescription
An alternative transform coder design criterion based on restricting the maximum perceptual error of each coefficient is proposed. This perceptually uniform quantisation of the transform domain ensures that the perceptual error will be below a certain limit regardless of the particular input image. The results show that the proposed criterion improves the subjective quality of the conventional average error criterion even if it is weighted with the same perceptual metric.
year | journal | country | edition | language |
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1999-01-01 | Electronics Letters |