Image analysis – Image compression or coding – Parallel coding architecture
Patent
1999-09-15
2000-09-12
Au, Amelia
Image analysis
Image compression or coding
Parallel coding architecture
341107, 382247, G06K 936, G06K 946
Patent
active
061189006
ABSTRACT:
Disclosed herein are easy-to-realize multivalued image coding and decoding devices, each of which is capable of reducing memories in number while the accuracy of calculations necessary upon coding and decoding is being held and relaxing a probability estimate. An image disassembler disassembles a bit string indicative of pixels into a plurality of parts in response to image data inputted from an image input unit. Further, the image disassembler sends the value of each disassembled pixel to be coded and the value of each disassembled pixel for reference to an image analyzer as disassembled image data. The image analyzer sends the value of each disassembled pixel to be coded to a coding unit as disassembled pixel-value data and transmits the value of the reference pixel to a probability estimate unit as status data. The probability estimate unit sends probability estimate data corresponding to the status data to the coding unit. The coding unit creates a codeword for each disassembled part from the probability estimate data and the disassembled pixel-value data and sends it to a code output unit as coded data.
REFERENCES:
patent: 4745473 (1988-05-01), Hall
patent: 5086488 (1992-02-01), Kato et al.
patent: 5291282 (1994-03-01), Nakagawa et al.
patent: 5414527 (1995-05-01), Koshi et al.
patent: 5432769 (1995-07-01), Honjo
patent: 5442458 (1995-08-01), Rabbani et al.
patent: 5543843 (1996-08-01), Kato et al.
patent: 5577132 (1996-11-01), Yokose et al.
patent: 5659631 (1997-08-01), Gormish et al.
patent: 5689589 (1997-11-01), Gormish et al.
patent: 5809176 (1998-09-01), Yajima
"A Noise Reduction Method of Transform Coding", Fukuda, The Proceedings of the 7.sup.th Picture Coding Symposium of Japan, 2-14, pp. 97-98, 1992.
Image Analytic Handbook, Takagi and Shimoda, Tokyo University Publishing Association, pp. 539-541, 1991.
"International Standard for Multimedia Coding", Hiroshi Yasuda, Maruzen, pp. 64-81.
"IBM Journal of Research and Development", W.B. Pennebaker et al., vol. 32, No. 6, pp. 715-840, Nov. 1988.
"A State Degeneration Method for Source Encoding of Multi-Level Images", Shigeo Kato et al., IEICE Technical Report, IE80-108, pp. 1-6.
"High-Efficiency Coding System for Continuous-Tone Image" by Imanaka, Ueno, Semasa and Tabe at the 1982 National Meeting of Communication Department of IECE, s3-8.
Ordentlich et al., Memory-efficient scalable line-based image coding, Mar. 1999, p. 218-227, IEEE Proceedings. DCC '99.
Kimura Shun-ichi
Koshi Yutaka
Yokose Taro
Au Amelia
Fuji 'Xerox Co., Ltd.
Johnson Timothy M.
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