Title:
画像品質および圧縮率を制御する装置
Document Type and Number:
Japanese Patent JP4641650
Kind Code:
B2
Abstract:
This invention relates to a method and apparatus for controlling image quality and compression ratios in image segmentation. More particularly, the invention is directed to an apparatus and method for selecting a manner in which pixel blocks of an image are to be compressed, the apparatus comprising a block analyser operative to sequentially analyse respective blocks of the image to determine values of at least two metrics for each respective block based exclusively on the analysis of the blocks and a block classifier including block mapping assignments in accord with a metric partitioning strategy based on the at least two metrics, the block classifier being operative to determine which of a plurality of compression schemes will be selected to compress each of the blocks based on the determined metric values and the block mapping assignments.
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Inventors:
Norman W. Zeck
William E. Nelson
Remo Jay Dotensio
William E. Nelson
Remo Jay Dotensio
Application Number:
JP2001128519A
Publication Date:
March 02, 2011
Filing Date:
April 26, 2001
Export Citation:
Assignee:
XEROX CORPORATION
International Classes:
H04N1/41; H04N7/26; H04N7/30
Domestic Patent References:
| JP4356873A | ||||
| JP5145768A | ||||
| JP4320160A | ||||
| JP6319133A |
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Kato Kazunori