JPS5625871A - Picture information coding method - Google Patents

Picture information coding method

Info

Publication number
JPS5625871A
JPS5625871A JP10201279A JP10201279A JPS5625871A JP S5625871 A JPS5625871 A JP S5625871A JP 10201279 A JP10201279 A JP 10201279A JP 10201279 A JP10201279 A JP 10201279A JP S5625871 A JPS5625871 A JP S5625871A
Authority
JP
Japan
Prior art keywords
video element
unit
video
coding
fed
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
JP10201279A
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 JP10201279A priority Critical patent/JPS5625871A/en
Publication of JPS5625871A publication Critical patent/JPS5625871A/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 make coding the information including the halftone, by grasping the video element for the part from each video element information consecutive sequentially through multivalue sampling of picture dissolving into video element unit and executing the optimum coding according to the video quality. CONSTITUTION:The video signal read in the video element unit at the scanner is made to N-value quantization at the quantizing unit 1, and this quantized signal is fed to the delay circuit 2 for one video element's share and the differential unit 3. The difference between the concentration level of delayed video element with this differential unit 3 and that of the noticed video element is detected and the difference is fed to the coding table 4 and the output of the quantizing unit 1 is directly fed to the table 4. At this table 4, the concentration level of the first video element of the unit block from the quantizing unit 1 is coded with the combination of binary code from a given rule, and when the concentration level value of the video element consecutive is minumum or maximum level, run length coding is made, and when the concentration level is at halftone level, the differential coding is made and the result is fed to RAM5 of the reception side II.
JP10201279A 1979-08-10 1979-08-10 Picture information coding method Pending JPS5625871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10201279A JPS5625871A (en) 1979-08-10 1979-08-10 Picture information coding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10201279A JPS5625871A (en) 1979-08-10 1979-08-10 Picture information coding method

Publications (1)

Publication Number Publication Date
JPS5625871A true JPS5625871A (en) 1981-03-12

Family

ID=14315842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10201279A Pending JPS5625871A (en) 1979-08-10 1979-08-10 Picture information coding method

Country Status (1)

Country Link
JP (1) JPS5625871A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4650598A (en) * 1985-03-18 1987-03-17 Calgon Corporation Method and emulsions for the control of dust

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4650598A (en) * 1985-03-18 1987-03-17 Calgon Corporation Method and emulsions for the control of dust

Similar Documents

Publication Publication Date Title
ATE108595T1 (en) DIGITAL VIDEO SIGNAL CODING DEVICE AND RELATIVE DECODING DEVICE.
CA2031006A1 (en) Near-toll quality 4.8 kbps speech codec
CA2023543A1 (en) Adaptive quantization coder/decoder with limiter circuitry
EP0434429A3 (en) Image processing apparatus
EP0891091A3 (en) Encoding method
JPS542050A (en) Block coding and decoding system
JPS6434067A (en) Halftone image encoder
JPS5625871A (en) Picture information coding method
JPS5651159A (en) Coding method of picture information
CA2112016A1 (en) Viterbi decoding method and viterbi decoding apparatus
JPS6482765A (en) Image information processing system
DE68926760D1 (en) Method and system for compressing encoded color video data
JPS5454507A (en) Coding processing system of adaptive expectancy
JPS57181270A (en) Encoding system for binary picture signal
JPS57112184A (en) System for processing of picture data
JPS57193176A (en) Redundancy supressing and coding system of half-tone picture signal
JPS56169966A (en) Video information coding method
JPS5494820A (en) Improvement method of video quality in signal processing
JPS6451784A (en) Picture data compressor
JPS57103471A (en) Processing system for facsimile encoding
JPS5799867A (en) Picture binary-coding method
JPS57132474A (en) Discriminating method for intermediate tone picture
JPS5731262A (en) Picture processing system
JPS57185769A (en) Noise rejecting method
JPS5673934A (en) Huffman encoding method for signal having correlation between sample points