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JPS5778278A - Video coding method - Google Patents

Video coding method

Info

Publication number
JPS5778278A
JPS5778278A JP55153538A JP15353880A JPS5778278A JP S5778278 A JPS5778278 A JP S5778278A JP 55153538 A JP55153538 A JP 55153538A JP 15353880 A JP15353880 A JP 15353880A JP S5778278 A JPS5778278 A JP S5778278A
Authority
JP
Japan
Prior art keywords
coding
region
video data
coding method
intermediate tone
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.)
Pending
Application number
JP55153538A
Other languages
Japanese (ja)
Inventor
Koichi Ejiri
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP55153538A priority Critical patent/JPS5778278A/en
Publication of JPS5778278A publication Critical patent/JPS5778278A/en
Pending 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
    • H04N1/41—Bandwidth or redundancy reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE:To achieve coding with good efficiency, by suitably determining the order of coding of scanning lines of intermediate tone and non-intermediate tone regions and the number of scanning lines, in a coding of video data of multi-value obtained through sampling. CONSTITUTION:Based on the video data, the entire region of the picture is divided into an intermediate region A and a non-intermediate region B. The video data of the region A is applied with the multi-value coding method and the two-dimension coding method is applied to the region B principally. If the entire coded line number m and the intermediate tone coded line number n are different as m>n in the two dimension coding method of the region B, the coding of the non-intermediate tone is executed by m-line and the intermediate coding of n-line is made. Next, in the case of m>=2n only, the intermediate tone coding is succeedingly done, and if not, non-intermediate coding is made. Thus the video data can be compressed efficiently.
JP55153538A 1980-10-31 1980-10-31 Video coding method Pending JPS5778278A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55153538A JPS5778278A (en) 1980-10-31 1980-10-31 Video coding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55153538A JPS5778278A (en) 1980-10-31 1980-10-31 Video coding method

Publications (1)

Publication Number Publication Date
JPS5778278A true JPS5778278A (en) 1982-05-15

Family

ID=15564700

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55153538A Pending JPS5778278A (en) 1980-10-31 1980-10-31 Video coding method

Country Status (1)

Country Link
JP (1) JPS5778278A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6180966A (en) * 1984-09-28 1986-04-24 Fuji Xerox Co Ltd Picture signal processing method
JPS63190474A (en) * 1987-02-03 1988-08-08 Canon Inc Color picture data coder
JPH0316380A (en) * 1990-06-01 1991-01-24 Canon Inc Picture processor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6180966A (en) * 1984-09-28 1986-04-24 Fuji Xerox Co Ltd Picture signal processing method
JPS63190474A (en) * 1987-02-03 1988-08-08 Canon Inc Color picture data coder
JPH0316380A (en) * 1990-06-01 1991-01-24 Canon Inc Picture processor

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