Image analysis – Image compression or coding – Transform coding
Patent
1997-11-17
2000-10-24
Boudreau, Leo H.
Image analysis
Image compression or coding
Transform coding
G06K 936
Patent
active
061379166
ABSTRACT:
Methods and systems for data compression and decompression are disclosed. Specifically, the method for data compression of the present invention receives eight inputs representing pixel information of an image and performs a combination of an 8-point discrete cosine transform (DCT) and weighting function to obtain eight outputs representing digital representations of an image. The method for data decompression receives eight inputs representing digital representations of an image and performs a combination of an inverse weighting function and an 8-point inverse discrete cosine transform (IDCT) to obtain pixel components of an image. The methods and systems of the present invention may be used in optimizing digital video encoders and decoders.
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Chang Ching-Fang
Lee Chuen-Chien
Yanagihara Naofumi
Boudreau Leo H.
Schirduan Paul H.
Sony Corporation
Sony Electronics Inc.
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