JPS6412764A - Encoding/decoding method and device for picture signal - Google Patents

Encoding/decoding method and device for picture signal

Info

Publication number
JPS6412764A
JPS6412764A JP17018587A JP17018587A JPS6412764A JP S6412764 A JPS6412764 A JP S6412764A JP 17018587 A JP17018587 A JP 17018587A JP 17018587 A JP17018587 A JP 17018587A JP S6412764 A JPS6412764 A JP S6412764A
Authority
JP
Japan
Prior art keywords
encoding
image
picture signal
parameter
block
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.)
Granted
Application number
JP17018587A
Other languages
Japanese (ja)
Other versions
JPH0448310B2 (en
Inventor
Shoji Mizuno
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP17018587A priority Critical patent/JPS6412764A/en
Priority to US07/210,836 priority patent/US5038389A/en
Priority to DE3854846T priority patent/DE3854846T2/en
Priority to EP88110105A priority patent/EP0296608B1/en
Priority to CA000570387A priority patent/CA1318969C/en
Publication of JPS6412764A publication Critical patent/JPS6412764A/en
Publication of JPH0448310B2 publication Critical patent/JPH0448310B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/004—Predictors, e.g. intraframe, interframe coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Image Processing (AREA)

Abstract

PURPOSE:To improve subjective picture quality, by finding the contrast of each block after dividing an input image into plural blocks in advance and performing encoding after classifying the image to plural types at every block at an encoding side, and performing decoding by using a parameter suitable for each type at a decoding side. CONSTITUTION:A contrast detector 1 defines contrast Ci(j, k) on a picture signal Fi(j, k) inputted at (i)th order, and adds it on an image feature parameter encoder 5 and a picture signal parameter setting apparatus 17. The image feature parameter encoder 5 performs unequal length encoding on the Ci(j, k), a Gi(j, k), and an area signal Bi(j, k) by a Hofmann encoding or a runlength encoding, etc., and adds them on a multiplexer 18, and outputs them to a transmission path 8, An image decoder 20 performs an operation corresponding to an image encoder 16 according to a defined encoding parameter, and decodes an encoded picture signal, and outputs it to an output terminal 101. In such a way, no encoding distortion such as block distrotion can be shown prominently, and the image can be encoded in superior picture quality.
JP17018587A 1987-06-25 1987-07-07 Encoding/decoding method and device for picture signal Granted JPS6412764A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP17018587A JPS6412764A (en) 1987-07-07 1987-07-07 Encoding/decoding method and device for picture signal
US07/210,836 US5038389A (en) 1987-06-25 1988-06-24 Encoding of a picture signal in consideration of contrast in each picture and decoding corresponding to the encoding
DE3854846T DE3854846T2 (en) 1987-06-25 1988-06-24 Coding an image signal taking into account the contrast in each image and decoding analogous to the coding
EP88110105A EP0296608B1 (en) 1987-06-25 1988-06-24 Encoding of a picture signal in consideration of contrast in each picture and decoding corresponding to the encoding
CA000570387A CA1318969C (en) 1987-06-25 1988-06-24 Encoding of a picture signal in consideration of contrast in each picture and decoding corresponding to the encoding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17018587A JPS6412764A (en) 1987-07-07 1987-07-07 Encoding/decoding method and device for picture signal

Publications (2)

Publication Number Publication Date
JPS6412764A true JPS6412764A (en) 1989-01-17
JPH0448310B2 JPH0448310B2 (en) 1992-08-06

Family

ID=15900261

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17018587A Granted JPS6412764A (en) 1987-06-25 1987-07-07 Encoding/decoding method and device for picture signal

Country Status (1)

Country Link
JP (1) JPS6412764A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04306210A (en) * 1990-10-19 1992-10-29 Elf Atochem Sa Sliprery granular polymer and resin which are based on vinyl chloride and have internal structure with improved uniformity and manufacture thereof
JPH0998419A (en) * 1995-07-21 1997-04-08 Sony Corp Information signal encoding device, encoding method and information signal decoding method
JP2006217480A (en) * 2005-02-07 2006-08-17 Sony Corp Coding apparatus and method, recording medium, program, image processing system, and image processing method
JP2009538560A (en) * 2006-05-25 2009-11-05 トムソン ライセンシング Weighted encoding method and system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04306210A (en) * 1990-10-19 1992-10-29 Elf Atochem Sa Sliprery granular polymer and resin which are based on vinyl chloride and have internal structure with improved uniformity and manufacture thereof
JPH0998419A (en) * 1995-07-21 1997-04-08 Sony Corp Information signal encoding device, encoding method and information signal decoding method
JP2006217480A (en) * 2005-02-07 2006-08-17 Sony Corp Coding apparatus and method, recording medium, program, image processing system, and image processing method
JP2009538560A (en) * 2006-05-25 2009-11-05 トムソン ライセンシング Weighted encoding method and system
US9106914B2 (en) 2006-05-25 2015-08-11 Thomson Licensing Method and system for weighted encoding

Also Published As

Publication number Publication date
JPH0448310B2 (en) 1992-08-06

Similar Documents

Publication Publication Date Title
KR970060176A (en) Encoding device, encoding method, transmission device, transmission method and recording medium
ATE110912T1 (en) DECODER.
EP0370823A3 (en) Method and apparatus for encoding images
EP1006735A3 (en) Video signal recording apparatus, video signal recording and reproduction apparatus, video signal coding device, and video signal transmission apparatus
CA2305572A1 (en) System and method for fixed-rate block-based image compression with inferred pixel values
EP0897241A3 (en) Coding and decoding digital video signal having duplicate pictures and frames with fields originating from different film source frames
DE69118939T2 (en) Image processing device
GB2362531A9 (en) Indicating the temporal order of reference frames in a video sequence
JPS5563173A (en) Picture signal processing system
AU7101794A (en) Method and apparatus for video signal encoding, decoding and monitoring
CA2440154A1 (en) Picture encoding method and apparatus and picture decoding method and apparatus
DE3850952D1 (en) Video signal encoding and decoding with an adaptive filter.
NO20050802L (en) Method and apparatus for variable image timing specification with variable accuracy for digital video coding
CA2165492A1 (en) Temporally-Pipelined Predictive Encoder/Decoder Circuit and Method
MX9801191A (en) Video coder employing pixel transposition.
EP0920214A3 (en) Apparatus and method of coding/decoding moving picture
EP1143737A3 (en) Image encoding apparatus and method, video camera, image recording apparatus, and image transmission apparatus
MY116689A (en) Apparatus for decoding mpeg video bitstream via plural paths
JPS6412764A (en) Encoding/decoding method and device for picture signal
DE69015398T2 (en) Device for coding digital video signals.
EP0939554A3 (en) Method and apparatus for coding a transparency signal
AU6858587A (en) Apparatus for decoding a digital signal
JPS55134576A (en) Still picture transmission system
JPS644186A (en) Encoding method for image signal
JPS5625853A (en) Information transmission system