JPS57101987A - Feature extracting circuit - Google Patents

Feature extracting circuit

Info

Publication number
JPS57101987A
JPS57101987A JP55178448A JP17844880A JPS57101987A JP S57101987 A JPS57101987 A JP S57101987A JP 55178448 A JP55178448 A JP 55178448A JP 17844880 A JP17844880 A JP 17844880A JP S57101987 A JPS57101987 A JP S57101987A
Authority
JP
Japan
Prior art keywords
address
deciding circuit
mask
area
circuit
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
JP55178448A
Other languages
Japanese (ja)
Inventor
Makoto Imamura
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Electric Corp
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Electric Corp, Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Electric Corp
Priority to JP55178448A priority Critical patent/JPS57101987A/en
Publication of JPS57101987A publication Critical patent/JPS57101987A/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
    • G06V10/40—Extraction of image or video features
    • G06V10/46—Descriptors for shape, contour or point-related descriptors, e.g. scale invariant feature transform [SIFT] or bags of words [BoW]; Salient regional features

Landscapes

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

Abstract

PURPOSE:To execute a feature extraction at a high speed by a simple constitution, by providing a direction deciding circuit and a count deciding circuit, and executing a decision of a direction, a change of an address, integration of circumferential length, integration of an area, etc. CONSTITUTION:A mask is moved by normal scan to a memory 41 in which is a picture has been stored. A start point is detected by a start point detecting circuit 47, a border data is registered in a controller 48, and its address is stored in other area of the memory 41. A direction deciding circuit 42 decides a direction for advancing next and inputs it to a register 43. In accordance with a data of the register 43, a clock is supplied to an X axis address counter 45 and a Y axis address counter 46 from a count deciding circuit 44. As a result, a new address is decided, and a position of the mask is decided. The mask goes the round, completes tracking of the center, and transfers a result of a circumferential length integrator 49 and an area integrator 50 to a prescribed place. After that, other part of the same picture executes the same operation.
JP55178448A 1980-12-17 1980-12-17 Feature extracting circuit Pending JPS57101987A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55178448A JPS57101987A (en) 1980-12-17 1980-12-17 Feature extracting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55178448A JPS57101987A (en) 1980-12-17 1980-12-17 Feature extracting circuit

Publications (1)

Publication Number Publication Date
JPS57101987A true JPS57101987A (en) 1982-06-24

Family

ID=16048690

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55178448A Pending JPS57101987A (en) 1980-12-17 1980-12-17 Feature extracting circuit

Country Status (1)

Country Link
JP (1) JPS57101987A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6355676A (en) * 1986-08-26 1988-03-10 Nec Corp Extracting circuit for contour feature of pattern
JPS6355675A (en) * 1986-08-26 1988-03-10 Nec Corp Control circuit for pattern contour trace

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51142391A (en) * 1975-06-02 1976-12-07 Toa Tokushu Denki Kk Neutrophile leucocyte detection device
JPS5298557A (en) * 1976-02-13 1977-08-18 Seiko Instr & Electronics Ltd System for measuring area using coordinate reader

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51142391A (en) * 1975-06-02 1976-12-07 Toa Tokushu Denki Kk Neutrophile leucocyte detection device
JPS5298557A (en) * 1976-02-13 1977-08-18 Seiko Instr & Electronics Ltd System for measuring area using coordinate reader

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6355676A (en) * 1986-08-26 1988-03-10 Nec Corp Extracting circuit for contour feature of pattern
JPS6355675A (en) * 1986-08-26 1988-03-10 Nec Corp Control circuit for pattern contour trace

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