Title:
VEHICLE DETECTION DEVICE, VEHICLE DETECTION METHOD, AND VEHICLE DETECTION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2008/020544
Kind Code:
A1
Abstract:
Attention is paid on the phenomenon that substantially no direct sun light or
no reflected light from surrounding objects is applied to a vehicle body bottom
and tire travel surfaces and the vehicle body bottom and the tire travel surfaces
have lower luminance values than all the other portions including the shades
of trees or buildings along the road in an on-vehicle camera image. Luminance
threshold value identification means (13) analyzes an image luminance histogram
and specifies the upper limit value of the pixel luminance which can be assumed
as a region of the vehicle body bottom. Vehicle assumed region extraction means
(15) assumes that the pixel position having a luminance value not greater than
the upper limit value is the region of the vehicle body bottom and sets a vehicle
assumed region, thereby verifying presence/absence of a vehicle in the vicinity.
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Inventors:
TAKAHASHI KATSUHIKO (JP)
Application Number:
PCT/JP2007/064979
Publication Date:
February 21, 2008
Filing Date:
July 31, 2007
Export Citation:
Assignee:
NEC CORP (JP)
TAKAHASHI KATSUHIKO (JP)
TAKAHASHI KATSUHIKO (JP)
International Classes:
H04N7/18; B60R21/00; G06T1/00; G08G1/16
Foreign References:
| JPH11284997A | 1999-10-15 | |||
| JP2004180200A | 2004-06-24 | |||
| JP2000039306A | 2000-02-08 | |||
| JPH0372730B2 | 1991-11-19 | |||
| JPH0916751A | 1997-01-17 | |||
| JPH09128548A | 1997-05-16 | |||
| JPH0369952B2 | 1991-11-05 | |||
| JP2001101420A | 2001-04-13 | |||
| JP2006223597A | 2006-08-31 |
Other References:
"Vehicle Detection Technology Using Method of Feature Space Projection of Edge Pair", VIEW 2005, PROCEEDINGS OF VISION ENGINEERING WORKSHOP, pages 160 - 165
See also references of EP 2053861A4
See also references of EP 2053861A4
Attorney, Agent or Firm:
TAKAHASHI, Isamu (Shinoda Bldg.10-7, Higashi Kanda 1-chom, Chiyoda-ku Tokyo 31, JP)
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