JPS57182875A - Optical character reader - Google Patents

Optical character reader

Info

Publication number
JPS57182875A
JPS57182875A JP56068533A JP6853381A JPS57182875A JP S57182875 A JPS57182875 A JP S57182875A JP 56068533 A JP56068533 A JP 56068533A JP 6853381 A JP6853381 A JP 6853381A JP S57182875 A JPS57182875 A JP S57182875A
Authority
JP
Japan
Prior art keywords
basis
skew
characters
projection
conversion 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.)
Pending
Application number
JP56068533A
Other languages
Japanese (ja)
Inventor
Takao Ishikawa
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 JP56068533A priority Critical patent/JPS57182875A/en
Publication of JPS57182875A publication Critical patent/JPS57182875A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/14—Image acquisition
    • G06V30/146—Aligning or centring of the image pick-up or image-field
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Character Input (AREA)

Abstract

PURPOSE:To read characters on a form accurately even if the form slants, by detecting a skew state and masking characters on a basis of this information to obtain a vertical projection and cutting out characters. CONSTITUTION:A photoelectric converting part 11 is connected to a bus BS and scans optically a carried form and converts the image on the form to a photoelectric conversion signal and performs the quantization preprocessing (noise elimination or the like). A skew detecting part 12 detects the direction and the degree of the inclination (skew) of the tip of the carried form on a basis of the photoelectric conversion signal outputted from the photoelectric converting part 11. Projection memories 16 and 17 store projections in the direction of the axis x respectively. A recognizing part 18 cuts out character patterns in a picture memory 13 on a basis of stored contents of the projection memory 16 or 17 and recognizes cut-out character patterns.
JP56068533A 1981-05-07 1981-05-07 Optical character reader Pending JPS57182875A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56068533A JPS57182875A (en) 1981-05-07 1981-05-07 Optical character reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56068533A JPS57182875A (en) 1981-05-07 1981-05-07 Optical character reader

Publications (1)

Publication Number Publication Date
JPS57182875A true JPS57182875A (en) 1982-11-10

Family

ID=13376461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56068533A Pending JPS57182875A (en) 1981-05-07 1981-05-07 Optical character reader

Country Status (1)

Country Link
JP (1) JPS57182875A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0978802A2 (en) * 1998-08-07 2000-02-09 Konica Corporation Inclination correction device and image reading apparatus therewith

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0978802A2 (en) * 1998-08-07 2000-02-09 Konica Corporation Inclination correction device and image reading apparatus therewith
EP0978802A3 (en) * 1998-08-07 2001-09-26 Konica Corporation Inclination correction device and image reading apparatus therewith
US6647155B2 (en) 1998-08-07 2003-11-11 Konica Corporation Inclination correction device and image reading apparatus therewith

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