Journal ArticleDOI
Slant Transform Image Coding
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TLDR
A new unitary transform called the slant transform, specifically designed for image coding, has been developed, which possesses a discrete sawtoothlike basis vector which efficiently represents linear brightness variations along an image line.Abstract:
A new unitary transform called the slant transform, specifically designed for image coding, has been developed. The transformation possesses a discrete sawtoothlike basis vector which efficiently represents linear brightness variations along an image line. A fast computational algorithm has been found for the transformation. The slant transformation has been utilized in several transform image-coding systems for monochrome and color images. Computer simulation results indicate that good quality coding can be accomplished with about 1 to 2 bits/pixel for monochrome images and 2 to 3 bits/pixel for color images.read more
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Journal ArticleDOI
Discrete Cosine Transform
TL;DR: In this article, a discrete cosine transform (DCT) is defined and an algorithm to compute it using the fast Fourier transform is developed, which can be used in the area of digital processing for the purposes of pattern recognition and Wiener filtering.
Journal ArticleDOI
Image coding using vector quantization: a review
Nasser M. Nasrabadi,R.A. King +1 more
TL;DR: First, the concept of vector quantization is introduced, then its application to digital images is explained, and the emphasis is on the usefulness of the vector quantification when it is combined with conventional image coding techniques, orWhen it is used in different domains.
Journal ArticleDOI
Image data compression: A review
TL;DR: A large variety of algorithms for image data compression are considered, starting with simple techniques of sampling and pulse code modulation (PCM) and state of the art algorithms for two-dimensional data transmission are reviewed.
Journal ArticleDOI
Picture coding: A review
Arun N. Netravali,J.O. Limb +1 more
TL;DR: This paper presents a review of techniques used for digital encoding of picture material, covering statistical models of picture signals and elements of psychophysics relevant to picture coding, followed by a description of the coding techniques.
Journal ArticleDOI
Adaptive Coding of Monochrome and Color Images
Wen-Hsiung Chen,C. Smith +1 more
TL;DR: In this article, an efficient adaptive encoding technique using a new implementation of the Fast Discrete Cosine Transform (FDCT) for bandwidth compression of monochrome and color images is described.
References
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Journal ArticleDOI
Spatial Transform Coding of Color Images
TL;DR: The transform-coding concept has been applied to the coding of color images represented by three primary color planes of data and it is shown that, by transform coding, the chrominance content of a color image can be coded with an average of 1.0 bits per element or less without serious degradation.
Journal ArticleDOI
Performance Measures for Transform Data Coding
Judea Pearl,H. Andrews,W. Pratt +2 more
TL;DR: This paper develops performance criteria for evaluating transform data coding schemes under computational constraints characterized by a rate-distortion relation R(D) similar in form to the theoretical rate- Distortion function.