JPS6482770A - Encoding system for image - Google Patents

Encoding system for image

Info

Publication number
JPS6482770A
JPS6482770A JP24012587A JP24012587A JPS6482770A JP S6482770 A JPS6482770 A JP S6482770A JP 24012587 A JP24012587 A JP 24012587A JP 24012587 A JP24012587 A JP 24012587A JP S6482770 A JPS6482770 A JP S6482770A
Authority
JP
Japan
Prior art keywords
pattern
patterns
reproduced
retrieved
distortion
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
JP24012587A
Other languages
Japanese (ja)
Other versions
JP2584793B2 (en
Inventor
Yoshiyuki Suzuki
Masahiro Funada
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
Priority to JP24012587A priority Critical patent/JP2584793B2/en
Publication of JPS6482770A publication Critical patent/JPS6482770A/en
Application granted granted Critical
Publication of JP2584793B2 publication Critical patent/JP2584793B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

PURPOSE:To obtain a reproduced image which matches well with peripheral blocks by classifying reproduced patterns by categories and encoding a block pattern in consideration of the distortion between the reproduced patterns and an input pattern. CONSTITUTION:It is checked whether or not an input pattern Pi corresponding to an (i) address of an encoder has the features of a category A by using an extraction mask and when so, a reproduced pattern is retrieved among patterns in the category A of a code book. At this time, when the distortion dkr to the retrieved reproduced pattern is smaller than a threshold value TL, the code of the retrieved pattern is registered as the code of the input pattern Pi. When the distortion is larger than the threshold value TL, the pattern with minimum distortion is retrieved in the code book. This processing is performed for all input patterns to find the reproduced patterns of respective input patterns, whose codes are regarded as those of respective input patterns. Consequently, a reproduced image of high definition is obtained.
JP24012587A 1987-09-24 1987-09-24 Sign assignment method Expired - Fee Related JP2584793B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24012587A JP2584793B2 (en) 1987-09-24 1987-09-24 Sign assignment method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24012587A JP2584793B2 (en) 1987-09-24 1987-09-24 Sign assignment method

Publications (2)

Publication Number Publication Date
JPS6482770A true JPS6482770A (en) 1989-03-28
JP2584793B2 JP2584793B2 (en) 1997-02-26

Family

ID=17054869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24012587A Expired - Fee Related JP2584793B2 (en) 1987-09-24 1987-09-24 Sign assignment method

Country Status (1)

Country Link
JP (1) JP2584793B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0443114A3 (en) * 1990-02-23 1993-12-15 Ibm Methods and apparatus for image-data decompression
JP2011049923A (en) * 2009-08-28 2011-03-10 Kyocera Mita Corp Image compression apparatus and image compression program

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0443114A3 (en) * 1990-02-23 1993-12-15 Ibm Methods and apparatus for image-data decompression
JP2011049923A (en) * 2009-08-28 2011-03-10 Kyocera Mita Corp Image compression apparatus and image compression program

Also Published As

Publication number Publication date
JP2584793B2 (en) 1997-02-26

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Legal Events

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