JPH0252908B2 - - Google Patents

Info

Publication number
JPH0252908B2
JPH0252908B2 JP56075751A JP7575181A JPH0252908B2 JP H0252908 B2 JPH0252908 B2 JP H0252908B2 JP 56075751 A JP56075751 A JP 56075751A JP 7575181 A JP7575181 A JP 7575181A JP H0252908 B2 JPH0252908 B2 JP H0252908B2
Authority
JP
Japan
Prior art keywords
circuit
image
binarization
information
threshold 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 - Lifetime
Application number
JP56075751A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57192171A (en
Inventor
Hirokawa Hayashi
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP56075751A priority Critical patent/JPS57192171A/ja
Publication of JPS57192171A publication Critical patent/JPS57192171A/ja
Publication of JPH0252908B2 publication Critical patent/JPH0252908B2/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Character Input (AREA)
  • Facsimile Image Signal Circuits (AREA)
JP56075751A 1981-05-21 1981-05-21 Picture processing device Granted JPS57192171A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56075751A JPS57192171A (en) 1981-05-21 1981-05-21 Picture processing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56075751A JPS57192171A (en) 1981-05-21 1981-05-21 Picture processing device

Publications (2)

Publication Number Publication Date
JPS57192171A JPS57192171A (en) 1982-11-26
JPH0252908B2 true JPH0252908B2 (de) 1990-11-15

Family

ID=13585270

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56075751A Granted JPS57192171A (en) 1981-05-21 1981-05-21 Picture processing device

Country Status (1)

Country Link
JP (1) JPS57192171A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02135586A (ja) * 1988-11-16 1990-05-24 Nec Corp 光学式文字読取装置

Also Published As

Publication number Publication date
JPS57192171A (en) 1982-11-26

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