JPS57112184A - System for processing of picture data - Google Patents

System for processing of picture data

Info

Publication number
JPS57112184A
JPS57112184A JP55185403A JP18540380A JPS57112184A JP S57112184 A JPS57112184 A JP S57112184A JP 55185403 A JP55185403 A JP 55185403A JP 18540380 A JP18540380 A JP 18540380A JP S57112184 A JPS57112184 A JP S57112184A
Authority
JP
Japan
Prior art keywords
difference value
compression
data
constitution
picture data
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
JP55185403A
Other languages
Japanese (ja)
Other versions
JPS6338151B2 (en
Inventor
Koichi Tanaka
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP55185403A priority Critical patent/JPS57112184A/en
Publication of JPS57112184A publication Critical patent/JPS57112184A/en
Publication of JPS6338151B2 publication Critical patent/JPS6338151B2/ja
Granted 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)

Abstract

PURPOSE:To compress picture data of the 10-bit constitution to data of 8-bit constitution, by converting a large difference value of a comparatively low frequency to a coarse difference value and by using a fine difference value of a comparatively high frequency as it is. CONSTITUTION:When a difference value Y is within a predetermined reference value X as it is. When the difference value Y is outside of the reference value + or -64, a coarse difference value, namely, a compression difference value X calculated by the data compression processing is used as the compression difference value X. After the difference value Y is calculated in this manner, compression data X of the 8-bit constitution is generated in accordance with the difference value Y by a functional equation Y=16X+960 or Y=16X-960. Thus, picture data of the 10-bit constitution is compressed to the compression difference value of the 8-bit constitution to reduce the number of required bits by 50%.
JP55185403A 1980-12-29 1980-12-29 System for processing of picture data Granted JPS57112184A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55185403A JPS57112184A (en) 1980-12-29 1980-12-29 System for processing of picture data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55185403A JPS57112184A (en) 1980-12-29 1980-12-29 System for processing of picture data

Publications (2)

Publication Number Publication Date
JPS57112184A true JPS57112184A (en) 1982-07-13
JPS6338151B2 JPS6338151B2 (en) 1988-07-28

Family

ID=16170175

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55185403A Granted JPS57112184A (en) 1980-12-29 1980-12-29 System for processing of picture data

Country Status (1)

Country Link
JP (1) JPS57112184A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60186971A (en) * 1984-03-05 1985-09-24 Shimadzu Corp Compressing method of image data
JPS63113769A (en) * 1986-10-31 1988-05-18 Agency Of Ind Science & Technol Information extracting device by mapping
JPS63113767A (en) * 1986-10-31 1988-05-18 Agency Of Ind Science & Technol Information extracting method by mapping

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60186971A (en) * 1984-03-05 1985-09-24 Shimadzu Corp Compressing method of image data
JPS63113769A (en) * 1986-10-31 1988-05-18 Agency Of Ind Science & Technol Information extracting device by mapping
JPS63113767A (en) * 1986-10-31 1988-05-18 Agency Of Ind Science & Technol Information extracting method by mapping

Also Published As

Publication number Publication date
JPS6338151B2 (en) 1988-07-28

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