Decompressor and compressor for simultaneously decompressing and

Details Decompressor and compressor for simultaneously decompressing and Decompressor and compressor for simultaneously decompressing and

1994-11-14

1997-05-20

Cosimano, Edward R.

Boots, shoes, and leggings

382233, 375244, 348410, H04N 1104

Patent

active

056318499

ABSTRACT:
A digital image differential pulse code modulation decompressor for simultaneously generating, during a cycle of operation of said decompressor, a decompressed value for a plurality of selected pixels located on a diagonal of an array of pixels. A storage stores an error value for each selected pixel to be processed during a cycle of operation of the decompressor. A processor simultaneously generates a decompressed value for each selected pixel where the decompressed value is derived from the error value for each selected pixel and a predicted value generated by the processor for each selected pixel. The predicted value is derived from a predictor which is at least a second order, two dimensional predictor.
A digital image differential pulse code modulation compressor for simultaneously generating, during a cycle of operation of said compressor, a decompressed value and a encoded quantized error value for each of a plurality of selected pixels located on a diagonal of an array of pixels where the encoded quantized error values will be used in generating an image represented by said array of pixels.

REFERENCES:
patent: 4864397 (1989-09-01), Zehner et al.
Rabbani et al., Digital Image Techniques, Tutorial Texts in Optical Engineering, vol. TT7, Eastman Kodak Company, Ch. 9 Lossy Predictive Coding, pp. 79-94.
U.S. application No. 08/060,613, Miller et al., filed May 12, 1993.
Gregory K. Wallace et al., The JPEG Still Picture Compression Standard, IEEE Transactions on Consumer Electronics, vol. 38, No. 1, Feb. 1992, pp. xvii-xxiv.
Majid Rabbani et al., Digital Image Compression Techniques,Tutorial Texts in Optical Engineering, vol. TT7, Eastman Kodak Company, Ch. 9 Lossy Predictive Coding, pp. 79-94.

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