Image analysis – Image compression or coding – Adaptive coding
Reexamination Certificate
2005-02-08
2005-02-08
Johns, Andrew W. (Department: 2621)
Image analysis
Image compression or coding
Adaptive coding
C382S172000, C382S224000
Reexamination Certificate
active
06853755
ABSTRACT:
A method of compressing a document, includes preparing an encoded representation of a document by scanning the document to provide a scanner output; classifying the scanner output as belonging to a class of document taken from the document classes consisting of smooth, text, graphics and image; and adaptively compressing the scanner output as a function of the class of the document. A compression apparatus for compressing scanned data, includes a scanner for scanning a document and generating a scanner output; a block-based classifier for classifying the scanner output as belonging to a class of documents taken from the document classes consisting of smooth, text, graphics and image; an adaptive compressor for compressing the scanner output according to a compression mode as a function of the class of document; a storage mechanism for storing compressed scanner output and compression mode information; and a decompressor for decompressing compressed scanner output in accordance with the compression mode information.
REFERENCES:
patent: 5241395 (1993-08-01), Chen
patent: 5432870 (1995-07-01), Schwartz
patent: 5778092 (1998-07-01), MacLeod et al.
patent: 5805735 (1998-09-01), Chen et al.
patent: 5903676 (1999-05-01), Wu et al.
patent: 6115496 (2000-09-01), Nguyen et al.
patent: 6163625 (2000-12-01), Ng et al.
patent: 6215904 (2001-04-01), Lavallee
patent: 6252994 (2001-06-01), Nafarieh
patent: 6314208 (2001-11-01), Konstantinides et al.
patent: 6324305 (2001-11-01), Holladay et al.
patent: 6366705 (2002-04-01), Chiu et al.
patent: 6563955 (2003-05-01), de Queiroz
patent: 06020089 (1994-01-01), None
patent: 09238253 (1997-09-01), None
A. Said and W.A. Pearlman,An image multiresolution representation for lossless and lossy image compression, IEEE Trans. on Image Processing, vol. 5, pp. 1303—1310, Sep. 1993.
Taubman et al.,Multirate 3D subband coding of video, IEEE Trans. on Image Processing, vol. 3, No. 5, pp. 572-588, Sep. 1994.
W. Sweldens,The Lifting Scheme: A new philosophy in biorthogonal wavelet constructions, Wavelet Applications in Signal and Image Processing III, pp. 68-79, Proc. SPIE 2569, 1995.
L. Bottou et al.,High quality document image compression using DjVu, Journal of Electronic Imaging, vol.7, pp.410-425, Jul. 1998.
A. Said and A. Drukarev,Simplified segmentation for compound image compression, Proceeding of ICIP 1999.
R. L. de Queiroz et al.,Optimizing block-thresholding segmentation for multiplayer compressing of compound images, IEEE Trans. on Image Processing, vol.9, pp. 1461-1471, Sep. 2000.
M. J. Weinberger,The LOCO-I lossless image compression algorithm: principles and standardization into JPEG-LS, IEEE Trans. on Image Processing, vol.9, No.8, pp.1309-1324, Aug. 2000.
Alavi Amir
Johns Andrew W.
Robert D. Varitz, P.C.
Sharp Laboratories of America Inc.
LandOfFree
Method and apparatus for adaptive compression of scanned... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for adaptive compression of scanned..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for adaptive compression of scanned... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3500080