Global patent index - EP 1072028 A1

EP 1072028 A1 2001-01-31 - METHOD AND DEVICE FOR DETECTING MOTION

Title (en)

METHOD AND DEVICE FOR DETECTING MOTION

Title (de)

VERFAHREN UND VORRICHTUNG ZUM ERFASSEN VON BEWEGUNGEN

Title (fr)

PROCEDE ET DISPOSITIF POUR LA DETECTION DE DEPLACEMENTS

Publication

EP 1072028 A1 (DE)

Application

EP 98951430 A

Priority

  • DE 19749136 A
  • EP 9805929 W

Abstract (en)

[origin: DE19749136A1] The invention relates to a method for detecting motion in a scene, characterised by the following steps: (a) determining two chromatic values (H1, H2) of a scene point by measuring the brightness (H1i, H2i) of the point in at least n different spectral regions at two different times, where n is an integer number >/=2, (b) determining a first and a second vector (h1, h2) in an n'-dimensional vector space, for the two chromatic values, by means of measured brightness values (H1i, H2i), where 2</=n'</=n, (c) determining the distance of the end point of the second vector (h2) to a straight line defined by the first vector (h1), and (d) deciding that motion occurred when the distance exceeds a predetermined threshold value ( epsilon ). The invention also relates to a device for implementing such a method. Considering that the brightness values are taken into account and related to different spectral regions, the existence of motion in the scene can be evaluated more safely than when the overall scene brightness is observed in visible light.

IPC 1-7 (main, further and additional classification)

G08B 13/194

IPC 8 full level (invention and additional information)

G08B 13/194 (2006.01)

CPC (invention and additional information)

G08B 13/19602 (2013.01); G08B 13/1961 (2013.01)

Citation (search report)

See references of WO 9924949A1

Designated contracting state (EPC)

AT BE DE ES FI FR GB IT NL SE

EPO simple patent family

DE 19749136 A1 19990527; DE 19749136 C2 20000127; CN 1278939 A 20010103; EP 1072028 A1 20010131; WO 9924949 A1 19990520

INPADOC legal status

2002-10-30 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20020423

2001-10-10 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20010830

2001-01-31 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000301

2001-01-31 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE DE ES FI FR GB IT NL SE

2001-01-31 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: SI PAYMENT 20000301