JPH0516225B2 - - Google Patents

Info

Publication number
JPH0516225B2
JPH0516225B2 JP57000396A JP39682A JPH0516225B2 JP H0516225 B2 JPH0516225 B2 JP H0516225B2 JP 57000396 A JP57000396 A JP 57000396A JP 39682 A JP39682 A JP 39682A JP H0516225 B2 JPH0516225 B2 JP H0516225B2
Authority
JP
Japan
Prior art keywords
signal
image
circuit
image signal
binary
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
JP57000396A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58117773A (ja
Inventor
Junji Hazama
Tooru Azuma
Kaoru Kikuchi
Norio Fujii
Kazunari Hata
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.)
Nikon Corp
Original Assignee
Nippon Kogaku KK
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 Nippon Kogaku KK filed Critical Nippon Kogaku KK
Priority to JP57000396A priority Critical patent/JPS58117773A/ja
Publication of JPS58117773A publication Critical patent/JPS58117773A/ja
Publication of JPH0516225B2 publication Critical patent/JPH0516225B2/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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Picture Signal Circuits (AREA)
JP57000396A 1982-01-06 1982-01-06 画像信号の２値化装置 Granted JPS58117773A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57000396A JPS58117773A (ja) 1982-01-06 1982-01-06 画像信号の２値化装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57000396A JPS58117773A (ja) 1982-01-06 1982-01-06 画像信号の２値化装置

Publications (2)

Publication Number Publication Date
JPS58117773A JPS58117773A (ja) 1983-07-13
JPH0516225B2 true JPH0516225B2 (enrdf_load_stackoverflow) 1993-03-03

Family

ID=11472640

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57000396A Granted JPS58117773A (ja) 1982-01-06 1982-01-06 画像信号の２値化装置

Country Status (1)

Country Link
JP (1) JPS58117773A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6037879A (ja) * 1983-08-10 1985-02-27 Canon Inc ２値化回路
JPS6037880A (ja) * 1983-08-10 1985-02-27 Canon Inc ２値化回路
US5200841A (en) * 1990-05-25 1993-04-06 Nikon Corporation Apparatus for binarizing images

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57181267A (en) * 1981-04-30 1982-11-08 Fujitsu Ltd Signal processing circuit

Also Published As

Publication number Publication date
JPS58117773A (ja) 1983-07-13

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