Title:
出力装置へ出力する文書イメージを準備する処理装置
Document Type and Number:
Japanese Patent JP4248654
Kind Code:
B2
Abstract:
An error diffusion processor for preparing a document image for printing. Shadows and highlights regions stress error diffusion processes, because accumulated error cannot be easily compensated for in these regions. Edge enhancement emphasizes the problem by locally increasing error in order to maintain spatial detail of the image. The arrangement described puts an additional term into the error calculation that is a function of local intensity, with substantial value only in shadow and highlight regions to correct for edge enhancement artifacts.
More Like This:
Inventors:
David A. Mantel
Reiner Eschbach
Reiner Eschbach
Application Number:
JP2499A
Publication Date:
April 02, 2009
Filing Date:
January 04, 1999
Export Citation:
Assignee:
XEROX CORPORATION
International Classes:
G06T5/00; H04N1/405
Domestic Patent References:
| JP5199413A | ||||
| JP6030274A |
Attorney, Agent or Firm:
Minoru Nakamura
Fumiaki Otsuka
Shishido Kaichi
Hideto Takeuchi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo
Fumiaki Otsuka
Shishido Kaichi
Hideto Takeuchi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo