JPS63261481A - Pattern symmetry identification system in pattern recognizing device - Google Patents

Pattern symmetry identification system in pattern recognizing device

Info

Publication number
JPS63261481A
JPS63261481A JP9531887A JP9531887A JPS63261481A JP S63261481 A JPS63261481 A JP S63261481A JP 9531887 A JP9531887 A JP 9531887A JP 9531887 A JP9531887 A JP 9531887A JP S63261481 A JPS63261481 A JP S63261481A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
center line
symmetry
pattern
line
processing part
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
JP9531887A
Inventor
Hiroaki Harada
Yasukazu Ito
Michiko Iwasaki
Masako Nishijima
Masashige Yamamoto
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

Links

Abstract

PURPOSE:To identify symmetry by extracting a center line of a symmerical axis candidate, setting a half straight line vertical to the center line from an end point and deciding whether a difference between a distance from the end point to the center line and a distance from the end point up to an intersecting point between the center line and the half straight line is more than a threshold level or not. CONSTITUTION:In a pattern recognizing device 1, a pattern is binarized by a reading processing part 11 and stored in an image data storing part 12. A vector processing part 13 executes broken line approximation based on the stored image data, converts the image data into vector data and inputs the vector data to a vector data sorting processing part 14. The processing part 14 sorts the inputted codes and characters into segments and outputs code, segments and characters respectively to code, segment and character recognizing processing parts 15-17. These processing parts 15-17 add attributes based upon identified and sorted results to the codes, segments and characters and store the processed results in a recognized results storing parts 18. A symmetry candidate segment extracting means 2 extracts a center line capable of forming symmetry from the storage part 18 and checks whether a shape line or the like to intersect with the center line exists or not and symmetry is identified by a vertical segment setting means 3 and a computing means 4.
JP9531887A 1987-04-20 1987-04-20 Pattern symmetry identification system in pattern recognizing device Granted JPS63261481A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9531887A JPS63261481A (en) 1987-04-20 1987-04-20 Pattern symmetry identification system in pattern recognizing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9531887A JPS63261481A (en) 1987-04-20 1987-04-20 Pattern symmetry identification system in pattern recognizing device

Publications (1)

Publication Number Publication Date
JPS63261481A true true JPS63261481A (en) 1988-10-28

Family

ID=14134398

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9531887A Granted JPS63261481A (en) 1987-04-20 1987-04-20 Pattern symmetry identification system in pattern recognizing device

Country Status (1)

Country Link
JP (1) JPS63261481A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5790700A (en) * 1995-02-20 1998-08-04 Nec Corporation Method for automatically recognizing line symmetry of a figure
US5809170A (en) * 1995-02-20 1998-09-15 Nec Corporation Method for automatically recognizing line symmetry of a figure
US5818458A (en) * 1995-11-07 1998-10-06 Nec Corporation Graphic-shaping method and apparatus for producing axissymmetrical graphic with respect to valid symmetry axes
US5877774A (en) * 1995-08-25 1999-03-02 Nec Corporation Line symmetrical graphic arrangement device for creating line symmetrical graphics with respect to a symmetry axis
US5889892A (en) * 1996-05-29 1999-03-30 Nec Corporation Line symmetrical figure shaping apparatus
US5991702A (en) * 1996-11-15 1999-11-23 Nec Corporation Axisymmetric figure shaping device for generating curvilinear figure precisely axisymmetric with respect to axis of symmetry and method therefor
US6018352A (en) * 1995-09-20 2000-01-25 Nec Corporation Line symmetrical graphic arrangement device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5790700A (en) * 1995-02-20 1998-08-04 Nec Corporation Method for automatically recognizing line symmetry of a figure
US5809170A (en) * 1995-02-20 1998-09-15 Nec Corporation Method for automatically recognizing line symmetry of a figure
US5877774A (en) * 1995-08-25 1999-03-02 Nec Corporation Line symmetrical graphic arrangement device for creating line symmetrical graphics with respect to a symmetry axis
US6018352A (en) * 1995-09-20 2000-01-25 Nec Corporation Line symmetrical graphic arrangement device
US5818458A (en) * 1995-11-07 1998-10-06 Nec Corporation Graphic-shaping method and apparatus for producing axissymmetrical graphic with respect to valid symmetry axes
US5889892A (en) * 1996-05-29 1999-03-30 Nec Corporation Line symmetrical figure shaping apparatus
US5991702A (en) * 1996-11-15 1999-11-23 Nec Corporation Axisymmetric figure shaping device for generating curvilinear figure precisely axisymmetric with respect to axis of symmetry and method therefor

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