JPH0468823B2 - - Google Patents

Info

Publication number
JPH0468823B2
JPH0468823B2 JP56123303A JP12330381A JPH0468823B2 JP H0468823 B2 JPH0468823 B2 JP H0468823B2 JP 56123303 A JP56123303 A JP 56123303A JP 12330381 A JP12330381 A JP 12330381A JP H0468823 B2 JPH0468823 B2 JP H0468823B2
Authority
JP
Japan
Prior art keywords
point
ridge
points
valley
video signal
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 - Lifetime
Application number
JP56123303A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5824271A (ja
Inventor
Toshuki Sakai
Juichi Oota
Michihiko Mino
Masatoshi Hino
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP56123303A priority Critical patent/JPS5824271A/ja
Priority to US06/405,766 priority patent/US4525747A/en
Publication of JPS5824271A publication Critical patent/JPS5824271A/ja
Publication of JPH0468823B2 publication Critical patent/JPH0468823B2/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
    • H04N1/40—Picture signal circuits
    • H04N1/403—Discrimination between the two tones in the picture signal of a two-tone original

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Character Input (AREA)
  • Facsimile Image Signal Circuits (AREA)
JP56123303A 1981-08-06 1981-08-06 アナログ映像信号２値化方式 Granted JPS5824271A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56123303A JPS5824271A (ja) 1981-08-06 1981-08-06 アナログ映像信号２値化方式
US06/405,766 US4525747A (en) 1981-08-06 1982-08-06 Analog-to-digital image signal conversion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56123303A JPS5824271A (ja) 1981-08-06 1981-08-06 アナログ映像信号２値化方式

Publications (2)

Publication Number Publication Date
JPS5824271A JPS5824271A (ja) 1983-02-14
JPH0468823B2 true JPH0468823B2 (enrdf_load_stackoverflow) 1992-11-04

Family

ID=14857195

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56123303A Granted JPS5824271A (ja) 1981-08-06 1981-08-06 アナログ映像信号２値化方式

Country Status (1)

Country Link
JP (1) JPS5824271A (enrdf_load_stackoverflow)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5299720A (en) * 1976-02-18 1977-08-22 Toshiba Corp Method of converting analogous image signal to binary value
JPS56775A (en) * 1979-06-18 1981-01-07 Ricoh Co Ltd Binary system

Also Published As

Publication number Publication date
JPS5824271A (ja) 1983-02-14

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