JPS57100574A - Quantization device - Google Patents

Quantization device

Info

Publication number
JPS57100574A
JPS57100574A JP55176214A JP17621480A JPS57100574A JP S57100574 A JPS57100574 A JP S57100574A JP 55176214 A JP55176214 A JP 55176214A JP 17621480 A JP17621480 A JP 17621480A JP S57100574 A JPS57100574 A JP S57100574A
Authority
JP
Japan
Prior art keywords
level
signal
quantization
assured
stamp
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.)
Pending
Application number
JP55176214A
Other languages
Japanese (ja)
Inventor
Shuji Kizu
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP55176214A priority Critical patent/JPS57100574A/en
Publication of JPS57100574A publication Critical patent/JPS57100574A/en
Pending 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)
  • Character Input (AREA)

Abstract

PURPOSE:To realize the assured quantization without affecting the white frame area of a stamp, by supplying a slice signal of a small level than the detection level to a quantizing part while holding the level by an optional time constant. CONSTITUTION:A background level detecting part 11 detects the background level for each scanning of line. An optimum slice signal B is delivered from the part 11 at the area corresponding to the character information and then supplied to a quantizing part 12 although the peak level of the signal B increases at the area corresponding to a stamp K. A read signal A is quantized at the part 12 with the level of the signal B. Thus an assured quantization signal C is delivered in accordance with the character information.
JP55176214A 1980-12-13 1980-12-13 Quantization device Pending JPS57100574A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55176214A JPS57100574A (en) 1980-12-13 1980-12-13 Quantization device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55176214A JPS57100574A (en) 1980-12-13 1980-12-13 Quantization device

Publications (1)

Publication Number Publication Date
JPS57100574A true JPS57100574A (en) 1982-06-22

Family

ID=16009610

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55176214A Pending JPS57100574A (en) 1980-12-13 1980-12-13 Quantization device

Country Status (1)

Country Link
JP (1) JPS57100574A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60179888A (en) * 1984-02-27 1985-09-13 Sumitomo Electric Ind Ltd Optical reader

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60179888A (en) * 1984-02-27 1985-09-13 Sumitomo Electric Ind Ltd Optical reader

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