Occupant detection system

Details Occupant detection system Occupant detection system

2008-07-29

2008-07-29

Mehta, Bravesh M (Department: 2624)

Image analysis

Applications

Vehicle or traffic control

C382S205000, C382S218000

Reexamination Certificate

active

07406181

ABSTRACT:
A camera (32) captures successive images of light stripes (22) projected onto an object by a light curtain (18) positioned by a light source positioner (28). A background image is subtracted (616) therefrom, and the resulting image is boosted by binning (618), binarized with a thresholding algorithm (620), skeletonized (622), interpolated (624) and stored (626). Interpolated images are acquired for a plurality of light stripes (22). A processor (30) generates (1604) a 3-D surface model from Cartesian coordinates computed for non-zero camera pixels. A volumetric representation is determined (1610) from the offset of the object surface model relative to a model of a proximate surface, e.g. a seating surface (24). The object is classified (1614), e.g. by a trainable pattern recognitions system, responsive to 3-D shape descriptors (1606) of the 3-D surface model and to the volumetric representation (1610) or portions (1612) thereof. The detection of an occupant (14) in a vehicle (12) may be used to control a safety restraint system (36).

REFERENCES:
patent: 4625329 (1986-11-01), Ishikawa et al.
patent: 4628362 (1986-12-01), Waehner
patent: 4864121 (1989-09-01), Pietzsch
patent: 4918583 (1990-04-01), Kudo et al.
patent: 4933541 (1990-06-01), Dufour
patent: 4954962 (1990-09-01), Evans, Jr. et al.
patent: 5016173 (1991-05-01), Kenet et al.
patent: 5039035 (1991-08-01), Fitzpatrick
patent: 5040116 (1991-08-01), Evans, Jr. et al.
patent: 5381236 (1995-01-01), Morgan
patent: 5455685 (1995-10-01), Mori
patent: 5482314 (1996-01-01), Corrado et al.
patent: 5528698 (1996-06-01), Kamei et al.
patent: 5531472 (1996-07-01), Semchena et al.
patent: 5684898 (1997-11-01), Brady et al.
patent: 5785347 (1998-07-01), Adolph et al.
patent: 5852672 (1998-12-01), Lu
patent: 5890085 (1999-03-01), Corrado et al.
patent: 5961571 (1999-10-01), Gorr et al.
patent: 5983147 (1999-11-01), Krumm
patent: 5988862 (1999-11-01), Kacyra et al.
patent: 5995650 (1999-11-01), Migdal et al.
patent: 6005958 (1999-12-01), Farmer et al.
patent: 6026340 (2000-02-01), Corrado et al.
patent: 6027138 (2000-02-01), Tanaka et al.
patent: 6113137 (2000-09-01), Mizutani et al.
patent: 6167155 (2000-12-01), Kostrzewski et al.
patent: 6198998 (2001-03-01), Farmer et al.
patent: 6272411 (2001-08-01), Corrado et al.
patent: 6512838 (2003-01-01), Rafii et al.
patent: 6587186 (2003-07-01), Bamji et al.
patent: 6614422 (2003-09-01), Rafii et al.
patent: 6674895 (2004-01-01), Rafii et al.
patent: 6710770 (2004-03-01), Tomasi et al.
patent: 6801662 (2004-10-01), Owechko et al.
patent: 6947575 (2005-09-01), Wallace et al.
patent: 6961443 (2005-11-01), Mahbub
patent: 6968073 (2005-11-01), O'Boyle et al.
patent: 2001/0019361 (2001-09-01), Savoye
patent: 2001/0035636 (2001-11-01), Adachi
patent: 2002/0018649 (2002-02-01), Hakamata
patent: 2002/0021287 (2002-02-01), Tomasi et al.
patent: 2002/0024808 (2002-02-01), Suehiro et al.
patent: 2002/0050924 (2002-05-01), Mahbub
patent: 2002/0051578 (2002-05-01), Imagawa et al.
patent: 2002/0113106 (2002-08-01), Breed et al.
patent: 2002/0140633 (2002-10-01), Rafii et al.
patent: 2003/0125855 (2003-07-01), Breed et al.
patent: 2003/0132921 (2003-07-01), Torunoglu et al.
patent: 2003/0156756 (2003-08-01), Gokturk et al.
patent: 2003/0165048 (2003-09-01), Bamji et al.
patent: 2003/0169906 (2003-09-01), Gokturk et al.
patent: 2003/0174125 (2003-09-01), Torunoglu et al.
patent: 2003/0204384 (2003-10-01), Owechko et al.
patent: 2003/0209893 (2003-11-01), Breed et al.
patent: 2003/0235341 (2003-12-01), Gokturk et al.
patent: 2004/0046744 (2004-03-01), Rafii et al.
patent: 2004/0066500 (2004-04-01), Gokturk et al.
patent: 2004/0136564 (2004-07-01), Roeber et al.
patent: 2004/0153229 (2004-08-01), Gokturk et al.
patent: 2005/0024324 (2005-02-01), Tomasi et al.
patent: 2005/0162638 (2005-07-01), Suzuki et al.
patent: 2006/0208169 (2006-09-01), Breed et al.
patent: 2244061 (1998-09-01), None
U.S. Appl. No. 09/882,959,Occupant Sensor, Naveed Mahbub, filed Jun. 15, 2001.
“Thinning”, HyperMedia Image Processing Reference, The University of Edinburgh, downloaded from “http://www.cee.hw.ac.uk.hipr/html/hipr—top.html” on Sep. 5, 2003, 8 pp.
Boverie et al., “Intelligent System for Video Monitoring of Vehicle Cockpit,” SAE 980613, Feb. 23-26, 1998.
Conde et al., “A Smart Airbag Solution Based on a High Speed CMOS Camera System”, 1999 IEEE Internaltional Conference on Image Processing, pp. 930-934.
Ramesh et al., “Real-Time Video Surveillance and Monitoring for Automotive,” SAE 2001-01-0347, Mar. 6-9, 2000.
Lequellec et al., “Car Cockpit 3D Reconstruction by a Structured Light Sensor” IEEE Intelligent Vehicles Symposium 2000, Oct. 3-5, 2000, pp. 87-92.
Siemens, “Sensors: All-Round Talent”, NewWorld, Feb. 2001, downloaded from the internet on Aug. 20, 2007 from http://w4.siemens.de/Ful/en/archiv
ewworld/heft2—01/artikel03/index.html.
The Univeristy of Edinburgh, “Thinning”, HyperMedia Image Processing Reference, downloaded from “http://www.cee.hw.ac.uk/hipr/html/thin.html” on May 31, 2007, 6 pp.
The Univeristy of Edinburgh, “Skeletonization”, HyperMedia Image Processing Reference, downloaded from “http://www.cee.hw.ac.uk/hipr/html/skeleton.html” on May 31, 2007, 4 pp.
International Search Report in International Application No. PCT/US04/032711, Aug. 24, 2006.
Supplementary European Search Report in European Application No. EP 04 80 9863 based upon International Application No. PCT/US04/032711, Mar. 13, 2007.

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