Title:
デジタル画像の適応量子化のための画像ブロックのタイプ判定方法
Document Type and Number:
Japanese Patent JP4355043
Kind Code:
B2
Abstract:
Pixel blocks of an input image are type classified based on an analysis of the secord differences between the values of neighboring pixels in the rows and columns of each pixel block. A histogram of these second order differences may be employed to refine this analysis
Inventors:
Pradeep S Shindu
Jean Marc Freyron
Donald jay curry
Asher nafarrier
Delon Cletter
Jean Marc Freyron
Donald jay curry
Asher nafarrier
Delon Cletter
Application Number:
JP1614999A
Publication Date:
October 28, 2009
Filing Date:
January 25, 1999
Export Citation:
Assignee:
XEROX CORPORATION
International Classes:
G06T7/00; G06T7/40; H04N7/30; G06T9/00; H04N1/40; H04N1/41
Domestic Patent References:
| JP63082347A | ||||
| JP7023227A | ||||
| JP8022546A | ||||
| JP9036752A | ||||
| JP5051223B2 | ||||
| JP8031953B2 | ||||
| JP2589298B2 |
Other References:
木村 雅樹, 村中 徳明, 今西 茂,3値方式による画像輪郭抽出,電子情報通信学会技術研究報告[情報理論],日本,電子情報通信学会,1994年 7月16日,第94巻第145号,p.11-16,IT94-24
Attorney, Agent or Firm:
Kenji Yoshida
Jun Ishida
Jun Ishida