DE69415853D1 - Bilddatenhalbtonrasterung durch Fehlerdiffusion gemäss einer definierten Gewichtenmatrix - Google Patents

Bilddatenhalbtonrasterung durch Fehlerdiffusion gemäss einer definierten Gewichtenmatrix

Info

Publication number
DE69415853D1
DE69415853D1 DE69415853T DE69415853T DE69415853D1 DE 69415853 D1 DE69415853 D1 DE 69415853D1 DE 69415853 T DE69415853 T DE 69415853T DE 69415853 T DE69415853 T DE 69415853T DE 69415853 D1 DE69415853 D1 DE 69415853D1
Authority
DE
Germany
Prior art keywords
image data
weight matrix
error diffusion
halftone image
data screening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69415853T
Other languages
English (en)
Other versions
DE69415853T2 (de
Inventor
David C Barton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hewlett Packard Development Co LP
Original Assignee
Hewlett Packard Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of DE69415853D1 publication Critical patent/DE69415853D1/de
Application granted granted Critical
Publication of DE69415853T2 publication Critical patent/DE69415853T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
    • H04N1/4051—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size
    • H04N1/4052—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size by error diffusion, i.e. transferring the binarising error to neighbouring dot decisions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
    • H04N1/4055—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2044—Display of intermediate tones using dithering
    • G09G3/2051—Display of intermediate tones using dithering with use of a spatial dither pattern
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2059—Display of intermediate tones using error diffusion
DE69415853T 1993-04-30 1994-04-26 Bilddatenhalbtonrasterung durch Fehlerdiffusion gemäss einer definierten Gewichtenmatrix Expired - Fee Related DE69415853T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/055,628 US5313287A (en) 1993-04-30 1993-04-30 Imposed weight matrix error diffusion halftoning of image data

Publications (2)

Publication Number Publication Date
DE69415853D1 true DE69415853D1 (de) 1999-02-25
DE69415853T2 DE69415853T2 (de) 1999-05-27

Family

ID=21999122

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69415853T Expired - Fee Related DE69415853T2 (de) 1993-04-30 1994-04-26 Bilddatenhalbtonrasterung durch Fehlerdiffusion gemäss einer definierten Gewichtenmatrix

Country Status (4)

Country Link
US (1) US5313287A (de)
EP (1) EP0622950B1 (de)
JP (1) JPH0757081A (de)
DE (1) DE69415853T2 (de)

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Also Published As

Publication number Publication date
EP0622950A2 (de) 1994-11-02
EP0622950A3 (de) 1995-02-22
US5313287A (en) 1994-05-17
JPH0757081A (ja) 1995-03-03
EP0622950B1 (de) 1999-01-13
DE69415853T2 (de) 1999-05-27

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: HEWLETT-PACKARD CO. (N.D.GES.D.STAATES DELAWARE),

8327 Change in the person/name/address of the patent owner

Owner name: HEWLETT-PACKARD DEVELOPMENT CO., L.P., HOUSTON, TE

8339 Ceased/non-payment of the annual fee