JPS5642871A - Detecting device for picture shift component - Google Patents

Detecting device for picture shift component

Info

Publication number
JPS5642871A
JPS5642871A JP11897479A JP11897479A JPS5642871A JP S5642871 A JPS5642871 A JP S5642871A JP 11897479 A JP11897479 A JP 11897479A JP 11897479 A JP11897479 A JP 11897479A JP S5642871 A JPS5642871 A JP S5642871A
Authority
JP
Japan
Prior art keywords
operation circuit
shift
centroid
back edge
data
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
JP11897479A
Other languages
Japanese (ja)
Inventor
Shoji Miyazawa
Mamoru Yamashita
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP11897479A priority Critical patent/JPS5642871A/en
Publication of JPS5642871A publication Critical patent/JPS5642871A/en
Pending legal-status Critical Current

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  • Image Analysis (AREA)

Abstract

PURPOSE: To ensure an accurate detection for the velocity vector of the shifting picture data, by obtaining both the direction and the shift extent of the straight line connecting the centroids of both the front and back edge images each which are proportional to the shift velocity.
CONSTITUTION: The data D (ji) having the address (i,j) is grouped into D+(i,j) and D-(i,j) according to the front and back edge images, and the X and Y coordinates corresponding to the address (i,j) are defined as X(i,j) and Y(i,j) each. Then all data of the picture memory 1 are supplied to the centroid operation circuit 2 to obtain the centroid coordinates GF(XG+, YG+) and GA(XG-, YG-) of the front and back edge images each. Then the angle formed by the straight line connecting each centroid and the coordinate axis, i.e., the shift direction θ is obtained by the angle operation circuit 3. Furthermore, the shift extent V is obtained by the coordinate rotation operation circuit 4 and the deflection operation circuit 5 each. In such way, an automatic and accurate detection is secured for the velocity vector of the shifting picture data.
COPYRIGHT: (C)1981,JPO&Japio
JP11897479A 1979-09-17 1979-09-17 Detecting device for picture shift component Pending JPS5642871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11897479A JPS5642871A (en) 1979-09-17 1979-09-17 Detecting device for picture shift component

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11897479A JPS5642871A (en) 1979-09-17 1979-09-17 Detecting device for picture shift component

Publications (1)

Publication Number Publication Date
JPS5642871A true JPS5642871A (en) 1981-04-21

Family

ID=14749880

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11897479A Pending JPS5642871A (en) 1979-09-17 1979-09-17 Detecting device for picture shift component

Country Status (1)

Country Link
JP (1) JPS5642871A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6043780A (en) * 1983-08-22 1985-03-08 Akira Kawabata Multi-purpose detector
JPS6280557A (en) * 1985-10-04 1987-04-14 Hitachi Ltd Monitoring device for poisonous substance inflow
JPH03175364A (en) * 1989-12-02 1991-07-30 Ezel Inc Measuring apparatus for flow velocity

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6043780A (en) * 1983-08-22 1985-03-08 Akira Kawabata Multi-purpose detector
JPH02747B2 (en) * 1983-08-22 1990-01-09 Akira Kawabata
JPS6280557A (en) * 1985-10-04 1987-04-14 Hitachi Ltd Monitoring device for poisonous substance inflow
JPH0531941B2 (en) * 1985-10-04 1993-05-13 Hitachi Ltd
JPH03175364A (en) * 1989-12-02 1991-07-30 Ezel Inc Measuring apparatus for flow velocity

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