Image analysis – Image compression or coding – Transform coding
Patent
1997-11-14
2000-08-15
Lee, Thomas D
Image analysis
Image compression or coding
Transform coding
348403, 348408, G06K 936, H04N 712
Patent
active
061048380
ABSTRACT:
A system and method to decode encoded video images in such a manner as to maintain high quality images while reducing the computation time needed to decode the images. The system takes into account that the resultant display generated may only have a fraction (1/16) of the resolution of the original image. Thus, optimizations are realized by modifying the inverse discrete cosine transform (IDCT) and inverse weighting (IW) processes to process only the portion of the image to be displayed.
REFERENCES:
patent: 5870144 (1999-02-01), Guerrara
patent: 5957998 (1999-09-01), Ozaki
Gonzalez, R.C. et al. "Digital Image Processing," Addison-Wesley, Reading, MA (1977) pp. 102-103.
"Specifications of Consumer-Used Digital VCRs using 6.3 mm Magnetic Tape", HD Digital VCR conference, (Dec. 1994).
Chang Ching-Fang
Yanagihara Naofumi
Chen Wen Peng
Lee Thomas D
Sony Corporation
Sony Electronics Inc.
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