Vehicle and road sign recognition device

Image analysis – Applications – Vehicle or traffic control

Reexamination Certificate

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Details

C348S223100

Reexamination Certificate

active

08036427

ABSTRACT:
The present invention includes: image capturing means (2) which captures a color image of a road via imaging means (7); area extraction means (3) which extracts areas having a similar color feature value from the captured color image of the road; white balance processing means (5) which performs, for each of the extracted areas, a white balance process of correcting each pixel data in the extracted area so as to reduce the degree of divergence in the level between color components according to a level balance between the color components of the pixel data in the extracted area; and road sign detection means (6) which detects a road sign on the road from the color image subjected to the white balance process. Thus, even if the road illumination state is partially different, it is possible to accurately detect a road sign such as a lane mark from the captured color image of the road via the imaging means such as a camera.

REFERENCES:
patent: 6876399 (2005-04-01), Masuyama et al.
patent: 7030913 (2006-04-01), Ikeda
patent: 2002/0101516 (2002-08-01), Ikeda
patent: 2002/0106109 (2002-08-01), Retterath et al.
patent: 2002/0130953 (2002-09-01), Riconda et al.
patent: 2005/0249378 (2005-11-01), Retterath et al.
patent: 2007/0154067 (2007-07-01), Laumeyer et al.
patent: 2008/0133136 (2008-06-01), Breed et al.
patent: 05-211654 (1993-08-01), None
patent: 09-074516 (1997-03-01), None
patent: 11-085999 (1999-03-01), None
patent: 2000-030058 (2000-01-01), None
patent: 2001-028762 (2001-01-01), None
Mori H et al, “Color impression factor: an image understanding method for outdoor mobile robots”, Intelligent Robots and Systems, 1997. IROS '97., Proceedings of the 1997 IEEE/RSJ International Conference on Grenoble, France Sep. 7-11, 1997, New York, NY, USA, IEEE, US, vol. 1, Sep. 7, 1997, pp. 380-387.
W.G. Shadeed et al., “Road Traffic Sign Detection in Color Images”, ICECS 2003, Proceeding of the 2003 10thIEEE International Conference, vol. 2, ISBN 0-7803-8163-7, 890-893.

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