Television – Special applications – Navigation
Reexamination Certificate
1998-06-10
2002-07-02
Rao, Andy (Department: 2713)
Television
Special applications
Navigation
C348S119000
Reexamination Certificate
active
06414712
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to a signal processing method for a vehicle navigational system.
Vehicle navigational systems using various techniques and examples for application are mentioned, for example, in the publication“Kraftfahrzeugtechnik” 1993, Section Technology-Dictionary. A controlled communication for convoys for use with motor-vehicle navigational systems is described in the publication “Automobiltechnische Zeitschrift” 90 (1988), pages 429-436.
A vehicle navigational system with a sensor fusion of radar sensor and video camera is known from a publication by E. Young et al. In IEE Colloquium on“Prometheus and Drive” (Digest No. 172), London, UK, 10.15.92. The radar sensor and video camera measurements are carried out independent of each other, and a common set of measurements and their probability distributions are subsequently created through data merging.
When using an image sensor arrangement, e.g. a video camera, with automatic image evaluation for detecting and classifying form, color, direction, aspect angle, etc. of interesting objects and the complexity of the observed scenery, the processing expenditure in an associated image evaluation system is very high.
SUMMARY OF THE INVENTION
It is the object of the present invention to specify a signal processing method for a vehicle navigational system, which supplies reliable environmental information with high efficiency.
This is achieved by a signal processing method for a vehicle navigational system having a radar arrangement and an image sensor arrangement which essentially monitor equal solid-angle regions, for which target parameters are respectively determined from the signals received from the radar arrangement and the image sensor arrangement, and wherein the determined target parameters from corresponding solid angle regions are linked through data merging, the method including the steps of creating reduced data sets and the resultant derived target parameters during the evaluation of the signals received from the radar and image sensor arrangements through a suitable linking of the data; specifying solid angle sections for the image evaluation during the evaluation of the signals received from the radar arrangements; and evaluating the signals received from the image sensor arrangement solely from these specified solid angle sections.
Advantageous embodiments and modifications of the invention will be described in the following description.
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R. L.Harvey et al: “Biological Vision Models for Sensor Fusion”. In: First conference on control Applications, 1992, vol. 1, pp. 392-397.
E. Young et al: “Improved Obstacle Detection by Sensor Fusion”. In: IEE Colloquium on ‘Prometheus and Drive’, London, UK, 1992, pp. 2/1-2/6.
Ritter Werner
Wanielik Gerd
DaimlerChrylsler, AG
Kunitz Norman N.
Rao Andy
Venable
Voorhees Catherine M.
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