Stereo vision system for counting items in a queue

Details Stereo vision system for counting items in a queue Stereo vision system for counting items in a queue

1994-01-31

1996-12-03

Couso, Jose L.

Image analysis

Histogram processing

For setting a threshold

382106, 382154, 348 42, 348139, 348142, 348143, 356 3, 356 12, 359462, 359458, 359466, 359468, G06K 900

Patent

active

055816258

ABSTRACT:
A number of items present in a substantially linear queue are counted by examining two images of a scene including the queue that are taken from vantage points offset relative to each other. Depth information for portions of the scene is obtained by correlating equal sized patches in the images at a predetermined number of offsets, since closer objects will require more of an offset to align one image relative to the other than objects further away from video cameras creating the two images. A match score is determined at each offset. The best offset and the number of offsets to achieve it are stored for each patch. A plot is then created for offsets versus the number of patches at each offset having the best match. Peaks in the plot indicate the number of objects in the queue.

REFERENCES:
patent: 3811010 (1974-05-01), Long
patent: 4234241 (1980-11-01), Schmidt
patent: 4303851 (1981-12-01), Mottier
patent: 4601053 (1986-07-01), Grumet
patent: 4631580 (1986-12-01), Taube et al.
patent: 4637055 (1987-01-01), Taylor
patent: 4654872 (1987-03-01), Hisano et al.
patent: 4723159 (1988-02-01), Imsand
patent: 4799243 (1989-01-01), Zepke
patent: 4939439 (1990-07-01), Dalglish
patent: 5003166 (1991-03-01), Girod
patent: 5065236 (1991-11-01), Diner
patent: 5097328 (1992-03-01), Boyette
patent: 5121201 (1992-06-01), Seki
patent: 5130794 (1992-07-01), Ritchey
patent: 5138638 (1992-08-01), Frey
patent: 5142357 (1992-08-01), Lipton et al.
patent: 5150382 (1992-09-01), Kume
patent: 5182776 (1993-01-01), Suzuki et al.
patent: 5213105 (1993-05-01), Gratton et al.
patent: 5298697 (1994-03-01), Suzuki et al.
patent: 5371536 (1994-12-01), Yamaguchi
Bantz, D. F. and Evangelisti, C. J., "Device for Creating 3D Video Effect by Parallax", IBM Technical Disclosure Bulletin, vol. 20, No. 5, Oct. 1977 .

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