Image analysis – Image compression or coding
Patent
1993-06-30
1995-07-11
Boudreau, Leo H.
Image analysis
Image compression or coding
382260, 358432, G06K 936
Patent
active
054328705
ABSTRACT:
A method and apparatus for compressing images having a binary extractor, a binary compressor and a JPEG compressor. The binary extractor produces a binary image representing an estimate of the binary information in the original image. The binary image is compressed by the binary compressor. The binary image is also subtracted from the original image to produce a difference image representing the continuous-tone information in the original image. The difference image is then compressed using the JPEG compressor. In this manner, the present invention compresses a document image without having to perform segmentation on the image.
REFERENCES:
patent: 4266249 (1981-05-01), Chai et al.
patent: 4578704 (1986-03-01), Gharavi
patent: 4924521 (1990-05-01), Dinan et al.
patent: 4945351 (1990-07-01), Naiman
Kuwata, Naoki et al., "A New Bi-Level Quantizing Method For Document Images", IEEE Transactions on Consumer Electronics, vol. 38, No. 3, Aug. 1992 pp. 718-724.
Rollins, Michael et al., "Possible Harmonic-Wavelet Hybrids In Image Compression", IEEE, 1992, pp. 191-198.
JAPIO-Patent Abstracts of Japan Oct./1976-Oct. 1992.
Boudreau Leo H.
Ricoh Company LTD
Ricoh Corporation
Tran Phuoc
LandOfFree
Method and apparatus for compressing and decompressing images of 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 compressing and decompressing images of, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for compressing and decompressing images of will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-509594