DE69739492D1 - Verbessertes Fehlerdiffusionsverfahren zur Farb- oder Schwarzweisswiedergabe - Google Patents

Verbessertes Fehlerdiffusionsverfahren zur Farb- oder Schwarzweisswiedergabe

Info

Publication number
DE69739492D1
DE69739492D1 DE69739492T DE69739492T DE69739492D1 DE 69739492 D1 DE69739492 D1 DE 69739492D1 DE 69739492 T DE69739492 T DE 69739492T DE 69739492 T DE69739492 T DE 69739492T DE 69739492 D1 DE69739492 D1 DE 69739492D1
Authority
DE
Germany
Prior art keywords
black
color
error diffusion
diffusion process
improved error
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
DE69739492T
Other languages
English (en)
Inventor
Victor Ostromoukhov
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of DE69739492D1 publication Critical patent/DE69739492D1/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
    • H04N1/4053—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 with threshold modulated relative to input image data or vice versa
    • 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
DE69739492T 1996-05-17 1997-05-12 Verbessertes Fehlerdiffusionsverfahren zur Farb- oder Schwarzweisswiedergabe Expired - Fee Related DE69739492D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/651,042 US5737453A (en) 1996-05-17 1996-05-17 Enhanced error-diffusion method for color or black-and-white reproduction

Publications (1)

Publication Number Publication Date
DE69739492D1 true DE69739492D1 (de) 2009-08-27

Family

ID=24611360

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69739492T Expired - Fee Related DE69739492D1 (de) 1996-05-17 1997-05-12 Verbessertes Fehlerdiffusionsverfahren zur Farb- oder Schwarzweisswiedergabe

Country Status (4)

Country Link
US (1) US5737453A (de)
EP (1) EP0808055B1 (de)
JP (1) JPH10312458A (de)
DE (1) DE69739492D1 (de)

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US10937133B2 (en) * 2016-11-16 2021-03-02 Koninklijke Philips N.V. Adaptive ringdown subtraction for coronary and peripheral intravascular ultrasound (IVUS)
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Also Published As

Publication number Publication date
EP0808055A2 (de) 1997-11-19
JPH10312458A (ja) 1998-11-24
EP0808055B1 (de) 2009-07-15
EP0808055A3 (de) 1999-01-20
US5737453A (en) 1998-04-07

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