Title:
DOT DATA GENERATING PROCESSING WITH GRADATION REPRODUCIBILITY ENHANCED
Document Type and Number:
Japanese Patent JP2004289252
Kind Code:
A
Abstract:
To provide technology capable of reducing the capacity of a memory required at dot data generation processing while enhancing the gradation reproducibility of a highlight region.
A threshold value matrix 130 having a histogram characteristic G1 wherein appearance frequency is reduced more as a threshold value is smaller is prepared in advance. Then comparing a given input pixel value Din with a threshold value Ti selected from the threshold value matrix 130 generates dot data Dout.
Inventors:
KATSUYAMA KIMITO
Application Number:
JP2003075772A
Publication Date:
October 14, 2004
Filing Date:
March 19, 2003
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
G06T5/00; H04N1/405; (IPC1-7): H04N1/405; G06T5/00
Attorney, Agent or Firm:
Meisei International Patent Office
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