Title:
OBJECT DETECTION
Document Type and Number:
WIPO Patent Application WO2002041272
Kind Code:
A3
Abstract:
A method for object detection that utilizes a patterned background. Patterned backgrounds are chosen such that each reference image paralyzed will have both light and dark pixels. The method calculates the difference between the expected value for the light pixels and the expected value of the dark pixels in the reference image. This difference is used to chose a threshold value. The difference in expected values for the corresponding pixels in a live image is calculated and compared to the threshold value. If the difference in expected values of the live image are less than the threshold value, object detection is indicated.
Inventors:
HAMZA RIDHA M
COFER DARREN DUANE
COFER DARREN DUANE
Application Number:
PCT/US2001/045316
Publication Date:
March 25, 2004
Filing Date:
November 14, 2001
Export Citation:
Assignee:
HONEYWELL INT INC (US)
International Classes:
G06K9/00; G08B13/194; (IPC1-7): G06T7/20; G06T7/00; G08B13/187
Domestic Patent References:
| WO2002033671A1 | 2002-04-25 |
Foreign References:
| EP0833503A2 | 1998-04-01 | |||
| EP0747868A1 | 1996-12-11 |
Download PDF:
Previous Patent: VENDING MACHINE WITH HALF MIRROR SIGNBOARD
Next Patent: LED WARNING LIGHT AND COMMUNICATION SYSTEM
Next Patent: LED WARNING LIGHT AND COMMUNICATION SYSTEM