EAN: 9789812875426

SPRINGERBRIEFS IN ELECTRICAL AND COMPUTER ENGIN...

This book first introduces classic as well as recent computational models for
just-noticeable-difference (JND) applications. Since the discrete cosine transform (DCT) is
applied in many image and video standards (JPEG  MPEG-1 2 4  H.261 3)  the book also includes a
comprehensive survey of computational models for JND that are based on DCT. The visual factors
used in these computational models are reviewed in detail. Further  an extensive comparative
analysis of these models using quantitative and qualitative performance criteria is presented 
which compares the noise shaping performance of these models with subjective evaluation and the
accuracy between the estimated JND thresholds and subjective evaluation. There are many surveys
available on computational models for JND  however  these surveys seldom compare the
performance of computational models that are based on DCT. The authors' survey of the
computational models and their in-depth review of the visual factors used in them will help
readers understand perceptual image coding based on DCT. The book also provides a comparative
analysis of several perceptual image coders that are based on DCT  which are compatible with
the highly popular and widely adopted JPEG standard.

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