GB1513817A - Method and apparatus for recognition of shape patterns - Google Patents

Method and apparatus for recognition of shape patterns

Info

Publication number
GB1513817A
GB1513817A GB28602/75A GB2860275A GB1513817A GB 1513817 A GB1513817 A GB 1513817A GB 28602/75 A GB28602/75 A GB 28602/75A GB 2860275 A GB2860275 A GB 2860275A GB 1513817 A GB1513817 A GB 1513817A
Authority
GB
United Kingdom
Prior art keywords
shape
differentiated
july
angle
parallel
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
Application number
GB28602/75A
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Publication of GB1513817A publication Critical patent/GB1513817A/en
Expired 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
    • G06V10/70—Arrangements for image or video recognition or understanding using pattern recognition or machine learning
    • G06V10/74—Image or video pattern matching; Proximity measures in feature spaces
    • G06V10/75—Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video features; Coarse-fine approaches, e.g. multi-scale approaches; using context analysis; Selection of dictionaries
    • G06V10/752—Contour matching

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Medical Informatics (AREA)
  • Computing Systems (AREA)
  • Databases & Information Systems (AREA)
  • Evolutionary Computation (AREA)
  • General Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Software Systems (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Image Analysis (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

1513817 Recognizing shapes AGENCY OF INDUSTRIAL SCIENCE & TECHNOLOGY 7 July 1975 [8 July 1974] 28602/75 Heading G4R A shape having at least a plurality of straight sides is determined by projecting the shape on to a fixed plane, e.g. using a video camera, to provide a series of projection values. The values are differentiated to determine where the junctions between the sides occur so that the signal shown in Fig. 2c represents the slope of the outline of Fig. 2a. The differentiated valves are then further differentiated. The shape or the camera is rotated and the angle of rotation measured. The angle is noted when the second differentiation indicates that a side of the shape is parallel to the fixed plane. The different angles detected and the length of each side, determined when it is parallel to the plane, can be compared with a list to determine which shape has been detected, or can be displayed.
GB28602/75A 1974-07-08 1975-07-07 Method and apparatus for recognition of shape patterns Expired GB1513817A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP49078003A JPS517846A (en) 1974-07-08 1974-07-08 Keijopataanno shikibetsuhoshiki

Publications (1)

Publication Number Publication Date
GB1513817A true GB1513817A (en) 1978-06-07

Family

ID=13649604

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28602/75A Expired GB1513817A (en) 1974-07-08 1975-07-07 Method and apparatus for recognition of shape patterns

Country Status (2)

Country Link
JP (1) JPS517846A (en)
GB (1) GB1513817A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6075788U (en) * 1983-10-31 1985-05-27 横浜ゴム株式会社 Fluid transport hose
JPH05265547A (en) * 1992-03-23 1993-10-15 Fuji Heavy Ind Ltd On-vehicle outside monitoring device

Also Published As

Publication number Publication date
JPS517846A (en) 1976-01-22
JPS5527707B2 (en) 1980-07-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee