JPS5781685A - Line mark recognition system - Google Patents

Line mark recognition system

Info

Publication number
JPS5781685A
JPS5781685A JP55157977A JP15797780A JPS5781685A JP S5781685 A JPS5781685 A JP S5781685A JP 55157977 A JP55157977 A JP 55157977A JP 15797780 A JP15797780 A JP 15797780A JP S5781685 A JPS5781685 A JP S5781685A
Authority
JP
Japan
Prior art keywords
mark
output
length
area
line mark
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
JP55157977A
Other languages
Japanese (ja)
Inventor
Toru Kato
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP55157977A priority Critical patent/JPS5781685A/en
Publication of JPS5781685A publication Critical patent/JPS5781685A/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
    • G06V10/30—Noise filtering

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Character Discrimination (AREA)

Abstract

PURPOSE:To detect a line mark exactly without being influenced by a black noise, by recognizing a shape of the line mark. CONSTITUTION:A mark is detected in accordance with picture information of a presence expected area 14 of a line mark 10 whose length and width are L and B, respectively, to the right from a left end 12 of a slip. At first, length of an output 16 obtained by taking the longitudinal projection is equal to mark legnth L, if a picture signal of the mark 10 is normal. Subsequently, the lateral projection is executed in an area 26 whose length in the longitudinal direction is H, entering by a distance M to the left from the right end of the output 16. In case when an output 18 of this lateral projection being equal to the width B of the mark 10 is one and also its length is equal to the width B of the mark 10, it is decided that the black area concerned is a line mark. In case when there is a small stain 32 near the mark 10, the lateral projection output becomes two of 18a and 18b, therefore, the longitudinal projection is taken again in the area 26. Subsequently, whether the longitudinal projection outputs 42, 44 are generated from the right end or not, and also exceed the allowable minimum length or not is checked.
JP55157977A 1980-11-10 1980-11-10 Line mark recognition system Pending JPS5781685A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55157977A JPS5781685A (en) 1980-11-10 1980-11-10 Line mark recognition system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55157977A JPS5781685A (en) 1980-11-10 1980-11-10 Line mark recognition system

Publications (1)

Publication Number Publication Date
JPS5781685A true JPS5781685A (en) 1982-05-21

Family

ID=15661550

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55157977A Pending JPS5781685A (en) 1980-11-10 1980-11-10 Line mark recognition system

Country Status (1)

Country Link
JP (1) JPS5781685A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63228278A (en) * 1987-03-17 1988-09-22 Fujitsu Ltd Ocr device capable of reading optical mark

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63228278A (en) * 1987-03-17 1988-09-22 Fujitsu Ltd Ocr device capable of reading optical mark

Similar Documents

Publication Publication Date Title
EP0225151A3 (en) Pattern recognition system
DE3172364D1 (en) Key recognition device
NO155861C (en) DETECTION SYSTEM.
NL7606899A (en) OPTO-ELECTRICAL DETECTION SYSTEM.
GB1477876A (en) Pattern identification system
JPS5781685A (en) Line mark recognition system
YU45261B (en) Circuit for detection of passing signal's zero, for signal made by phonic wheel type electromagnetic sensor
JPS56114071A (en) Arithmetic circuit
JPS5621469A (en) Information input system
JPS569871A (en) Deciding circuit for character line direction
JPS55110376A (en) Optical character reader
JPS55135972A (en) Character line direction discrimination circuit
JPS5741069A (en) Inter-frame encoding system
JPS5315711A (en) Picture signal processing circuit
JPS57192170A (en) Mark recognizing device
JPS5680782A (en) Discriminator for character entry direction
JPS56143091A (en) Pattern reader
JPS57194376A (en) Detection of foreign matter
JPS56138227A (en) Color discriminating method of design paper or the like
JPS57185770A (en) Noise rejecting method
JPS55159281A (en) Pick up system for characteristics of curve
KR860002205A (en) Color detection circuit
JPS57161978A (en) Character cut-out device
JPS5713578A (en) Optical character reader
JPS54107210A (en) Abnormity detection system for reading light source