Invention Grant
- Patent Title: Method for object tracking
- Patent Title (中): 对象跟踪方法
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Application No.: US12231331Application Date: 2008-08-29
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Publication No.: US08055020B2Publication Date: 2011-11-08
- Inventor: Mirko Meuter , Uri Iurgel
- Applicant: Mirko Meuter , Uri Iurgel
- Applicant Address: US MI Troy
- Assignee: Delphi Technologies, Inc.
- Current Assignee: Delphi Technologies, Inc.
- Current Assignee Address: US MI Troy
- Agent Thomas N. Twomey
- Priority: EP07018503 20070920
- Main IPC: G06K9/00
- IPC: G06K9/00 ; H04N5/225

Abstract:
The present invention relates to a method for the recognition and tracking of a moving object, in particular of a pedestrian, from a motor vehicle, at which a camera device is arranged. An image of the environment including picture elements is taken in the range of view of the camera device (20) by means of the camera device at regular time intervals and those picture elements are identified with the help of an image processing system which correspond to moving objects to be tracked. A picture element is extracted for each of these objects which represents a projection in image coordinates of that spatial point at which the object contacts a road plane The movement of the corresponding spatial point in the road plane is tracked by means of a state estimator which uses an at least four-dimensional state vector whose components are a position of the spatial point in the road plane and an associated speed in the road plane, wherein the tracking of the movement by the state estimator includes the steps that a prediction is generated for the state vector, this prediction is converted into image coordinates via suitable projection equations, an error to be expected for this prediction is calculated in image coordinates by means of a covariance matrix, and this prediction is compared with the picture element extracted in a later image and is updated.
Public/Granted literature
- US20090080701A1 Method for object tracking Public/Granted day:2009-03-26
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