JPS58195986A - 文字読取装置のしきい値制御装置 - Google Patents

文字読取装置のしきい値制御装置

Info

Publication number
JPS58195986A
JPS58195986A JP57079515A JP7951582A JPS58195986A JP S58195986 A JPS58195986 A JP S58195986A JP 57079515 A JP57079515 A JP 57079515A JP 7951582 A JP7951582 A JP 7951582A JP S58195986 A JPS58195986 A JP S58195986A
Authority
JP
Japan
Prior art keywords
threshold
binarization
value
threshold value
reading
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.)
Granted
Application number
JP57079515A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0211948B2 (enrdf_load_stackoverflow
Inventor
Masaaki Ishizaka
政明 石坂
Toichi Kudo
工藤　統一
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.)
Nissan Motor Co Ltd
Panasonic Mobile Communications Co Ltd
Original Assignee
Nissan Motor Co Ltd
Matsushita Communication Industrial 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 Nissan Motor Co Ltd, Matsushita Communication Industrial Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP57079515A priority Critical patent/JPS58195986A/ja
Publication of JPS58195986A publication Critical patent/JPS58195986A/ja
Publication of JPH0211948B2 publication Critical patent/JPH0211948B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06V30/16—Image preprocessing
    • G06V30/162—Quantising the image signal
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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)
  • Facsimile Image Signal Circuits (AREA)
JP57079515A 1982-05-11 1982-05-11 文字読取装置のしきい値制御装置 Granted JPS58195986A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57079515A JPS58195986A (ja) 1982-05-11 1982-05-11 文字読取装置のしきい値制御装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57079515A JPS58195986A (ja) 1982-05-11 1982-05-11 文字読取装置のしきい値制御装置

Publications (2)

Publication Number Publication Date
JPS58195986A true JPS58195986A (ja) 1983-11-15
JPH0211948B2 JPH0211948B2 (enrdf_load_stackoverflow) 1990-03-16

Family

ID=13692101

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57079515A Granted JPS58195986A (ja) 1982-05-11 1982-05-11 文字読取装置のしきい値制御装置

Country Status (1)

Country Link
JP (1) JPS58195986A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6184967A (ja) * 1984-10-03 1986-04-30 Oki Electric Ind Co Ltd スライスレベル決定回路
JPS6469163A (en) * 1987-09-10 1989-03-15 Minolta Camera Kk Picture reader

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6184967A (ja) * 1984-10-03 1986-04-30 Oki Electric Ind Co Ltd スライスレベル決定回路
JPS6469163A (en) * 1987-09-10 1989-03-15 Minolta Camera Kk Picture reader

Also Published As

Publication number Publication date
JPH0211948B2 (enrdf_load_stackoverflow) 1990-03-16

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