JPS6339141B2 - - Google Patents

Info

Publication number
JPS6339141B2
JPS6339141B2 JP55060566A JP6056680A JPS6339141B2 JP S6339141 B2 JPS6339141 B2 JP S6339141B2 JP 55060566 A JP55060566 A JP 55060566A JP 6056680 A JP6056680 A JP 6056680A JP S6339141 B2 JPS6339141 B2 JP S6339141B2
Authority
JP
Japan
Prior art keywords
signal
analog video
video signal
analog
initial value
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.)
Expired
Application number
JP55060566A
Other languages
English (en)
Japanese (ja)
Other versions
JPS56157576A (en
Inventor
Mitsuharu Tadauchi
Kyohiko Tanno
Taizo Nakano
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.)
Hitachi Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Hitachi Ltd
Nippon Telegraph and Telephone 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 Hitachi Ltd, Nippon Telegraph and Telephone Corp filed Critical Hitachi Ltd
Priority to JP6056680A priority Critical patent/JPS56157576A/ja
Priority to US06/260,090 priority patent/US4420742A/en
Priority to EP81103441A priority patent/EP0039899B1/en
Priority to DE8181103441T priority patent/DE3168865D1/de
Publication of JPS56157576A publication Critical patent/JPS56157576A/ja
Publication of JPS6339141B2 publication Critical patent/JPS6339141B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/28—Quantising the image, e.g. histogram thresholding for discrimination between background and foreground patterns

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Input (AREA)
JP6056680A 1980-05-09 1980-05-09 Signal procession device Granted JPS56157576A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP6056680A JPS56157576A (en) 1980-05-09 1980-05-09 Signal procession device
US06/260,090 US4420742A (en) 1980-05-09 1981-05-04 Scan signal processing system
EP81103441A EP0039899B1 (en) 1980-05-09 1981-05-06 Scan signal processing system
DE8181103441T DE3168865D1 (en) 1980-05-09 1981-05-06 Scan signal processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6056680A JPS56157576A (en) 1980-05-09 1980-05-09 Signal procession device

Publications (2)

Publication Number Publication Date
JPS56157576A JPS56157576A (en) 1981-12-04
JPS6339141B2 true JPS6339141B2 (it) 1988-08-03

Family

ID=13145933

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6056680A Granted JPS56157576A (en) 1980-05-09 1980-05-09 Signal procession device

Country Status (1)

Country Link
JP (1) JPS56157576A (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61237578A (ja) * 1985-04-12 1986-10-22 Fuji Xerox Co Ltd シエ−デイング歪補正回路
JPH065883B2 (ja) * 1985-04-19 1994-01-19 日立超エル・エス・アイエンジニアリング株式会社 信号処理装置
JPH07283944A (ja) * 1994-04-07 1995-10-27 Fujitsu Ltd 画像読み取り装置における白レベル情報補正装置及び白レベル情報補正装置付き画像読み取り装置

Also Published As

Publication number Publication date
JPS56157576A (en) 1981-12-04

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