Title:
DEVICE FOR MONITORING VICINITY OF VEHICLE
Document Type and Number:
WIPO Patent Application WO/2012/004938
Kind Code:
A1
Abstract:
In the present disclosures, after elimination processing (filtering) ahead of time, subject candidates extracted from video images are classified. Here, in said elimination processing, subject candidates are presumed to have a predetermined size set ahead of time for desired categories of subject candidates, and on the basis of the size of the subject candidates within a current image, the distances (Z0) from a vehicle to the subject candidates are calculated, the distance (ΔZ) of vehicle travel from the point in time a past image was captured until the point in time the current image was captured is calculated, the size of the subject candidate in the current image is reduced by a change ratio that is on the basis of the distance traveled and the distance to said subject candidate, and the size of the subject candidate in the past image and the size (Ghv) of the subject candidate reduced by the change ratio are compared. Subject candidates of which the difference between the two is determined to be above a predetermined value are eliminated. Because detailed classification is performed after having coarsely eliminated what is not a desired subject, computation load can be eased and mis-determinations can be reduced.
Inventors:
MATSUDA, Kodai (4-1, Chuo 1-chome, Wako-sh, Saitama 93, 〒3510193, JP)
松田 幸大 (〒93 埼玉県和光市中央一丁目４番１号、株式会社本田技術研究所内 Saitama, 〒3510193, JP)
NAGAOKA, Nobuharu (4-1, Chuo 1-chome, Wako-sh, Saitama 93, 〒3510193, JP)
松田 幸大 (〒93 埼玉県和光市中央一丁目４番１号、株式会社本田技術研究所内 Saitama, 〒3510193, JP)
NAGAOKA, Nobuharu (4-1, Chuo 1-chome, Wako-sh, Saitama 93, 〒3510193, JP)
Application Number:
JP2011/003417
Publication Date:
January 12, 2012
Filing Date:
June 15, 2011
Export Citation:
Assignee:
HONDA MOTOR CO., LTD. (1-1 Minami-Aoyama 2-chome, Minato-ku Tokyo, 56, 〒1078556, JP)
本田技研工業株式会社 (〒56 東京都港区南青山二丁目１番１号 Tokyo, 〒1078556, JP)
MATSUDA, Kodai (4-1, Chuo 1-chome, Wako-sh, Saitama 93, 〒3510193, JP)
松田 幸大 (〒93 埼玉県和光市中央一丁目４番１号、株式会社本田技術研究所内 Saitama, 〒3510193, JP)
本田技研工業株式会社 (〒56 東京都港区南青山二丁目１番１号 Tokyo, 〒1078556, JP)
MATSUDA, Kodai (4-1, Chuo 1-chome, Wako-sh, Saitama 93, 〒3510193, JP)
松田 幸大 (〒93 埼玉県和光市中央一丁目４番１号、株式会社本田技術研究所内 Saitama, 〒3510193, JP)
International Classes:
G08G1/16; B60R21/00; G06T1/00; H04N7/18
Attorney, Agent or Firm:
OFH PATENT (Hiei Kudan Bldg, 8-11 Kudan-minami 3-chome, Chiyoda-k, Tokyo 74, 〒1020074, JP)
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