Method and apparatus for pre-processing mixed raster content planes to improve the quality of a decompressed image and increase document compression ratios

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6272255
APP PUB NO 20010000711A1
SERIAL NO

09731585

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An improved technique for processing a color or gray scale pixel map representing a document is disclosed. The pixel map is decomposed into a three-plane representation, a reduced-resolution 'upper' plane, a reduced-resolution 'lower' plane, and a high-resolution binary selector plane. The 'upper' and 'lower' planes contain the color or gray scale for the page as well as the continuous tone pictures that are contained on the page. The selector plane stores information for selecting from either the foreground plane or background plane during decompression. Information contained in the selector plane is first used to pre-process the upper and lower planes to reduce the amount of data on each of the other two planes that will be subjected to further processing. Each of the pre-processed planes is compressed using a compression technique optimal for the type of data that resides upon it.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
XEROX CORPORATIONSTAMFORD, CT13750

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Buckley, Robert R Rochester, NY 41 768
de, Queiroz Ricardo L Pittsford, NY 44 752
Eschbach, Reiner Webster, NY 209 3885
Fuss, William A Rochester, NY 40 1133

Cited Art Landscape

Patent Info (Count) # Cites Year
 
MASSACHUSETTS INSTITUTE OF TECHNOLOGY (2)
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NUANCE COMMUNICATIONS, INC. (1)
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XEROX CORPORATION (1)
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CANON KABUSHIKI KAISHA (1)
* 5864638 Image data processing using bi-level and multi-level value data 18 1996
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
ADOBE SYSTEMS INCORPORATED (2)
* 7333657 Recognizing text in a multicolor image 2 2004
7505626 Recognizing background in a multicolor image 2 2007
 
SHARP KABUSHIKI KAISHA (9)
8411319 Methods and systems for concurrent rendering of graphic-list elements 1 2009
8339653 Methods and systems for rendering data based on overlap characteristics 2 2009
8339670 Methods and systems for rendering data based on graphic-list partitioning 0 2009
8339671 Methods and systems for rendering data by partitioning a graphics list 1 2009
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INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
9445108 Document compression with neighborhood biased pixel labeling 0 2015
 
SEIKO EPSON CORPORATION (1)
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KONICA MINOLTA BUSINESS TECHNOLOGIES, INC. (2)
* 7796306 Image processing apparatus with a deleting portion, image processing method for deleting image data, and image processing program product with image data deleting function 0 2004
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GOOGLE TECHNOLOGY HOLDINGS LLC (1)
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XEROX CORPORATION (6)
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9230161 Multiple layer block matching method and system for image denoising 0 2013
 
COGNEX CORPORATION (1)
6490375 Methods for finding peaks in a characteristic surface of an image 4 2001
 
GOOGLE TECHNOLOGY HOLDINGS LLC (1)
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NOKIA TECHNOLOGIES OY (2)
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