Patent
Apparatus and method for compressing still images
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TLDR
In this article, a method and apparatus is described whereby the image compression is done with no multiplications while still compatible with a JPEG (Joint Photographic Experts Group) Transform, and other enhancements are made to improve image quality.Abstract:
Transforms such as the DCT are useful for image compression. One close relative of the DCT is preferred for its arithmetic simplicity. A method and apparatus is described whereby the image compression is done with no multiplications while still compatible with a JPEG (Joint Photographic Experts Group) Transform. Other enhancements are made to improve image quality.read more
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References
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Patent
Adaptive block size image compression method and system
TL;DR: An image compression system and method for compressing image data for transmission each block and corresponding sub-blocks of pixel data is subjected to a discrete cosine transform (DCT) operation.
Journal ArticleDOI
VLSI implementation of a 16*16 discrete cosine transform
TL;DR: In this paper, the implementation of a 16*16 discrete cosine transform (DCT) chip using a concurrent architecture is presented, which performs an equivalent of a half billion multiplications and accumulations per second.
Patent
Two-dimensional discrete cosine transform processor.
TL;DR: In this paper, the Discrete Cosine Transform (DCT) processor can be used as part of a video bandwidth or image compression system, which is capable of real time processing of blocks of video pixel or other 2D data to yield the two-dimensional DCT thereof.
Patent
Method and apparatus for digitally processing a high definition television augmentation signal
Faramarz Azadegan,Eberhard Fisch +1 more
TL;DR: In this article, a method and apparatus for digital encoding are described for compressing the augmentation channel signals (chrominance and luminance signals for panel information and high frequency luminance and line difference signal) so that this information can be transmitted in a 3 MHz wide RF channel using a digital transmission scheme.
Journal ArticleDOI
Reconsideration of "A Fast Computational Algorithm for the Discrete Cosine Transform"
TL;DR: Some corrections are made for the original paper "A fast computational algorithm for the discrete cosine transform," 1 which contains some errors of indexes and of multiplication factors.