Local positioning apparatus

Details Local positioning apparatus Local positioning apparatus

1996-04-25

1999-05-18

Chin, Gary

Data processing: vehicles, navigation, and relative location

Navigation

Employing position determining equipment

701 28, 348116, 348118, G06F165/00

Patent

active

059047259

ABSTRACT:
A local positioning device detects a local position of an automobile advancing along a lane formed on a road in a direction. A digital image data indicative of an advancing direction view observed from the automobile in the advancing direction is applied to the local position device. An edge extractor, a threshold generator, and a contour extractor are operable for extracting a contour data indicative of the lane from the image signal. A coordinate convertor converts the contour data into a plane view data indicating the dimensions of extracted contours correctly. A matching operator matches a line or an arc with each of extracted contour. A lane mark contour extractor selectively extracts a pair of extracted contours corresponding to the lane on which the automobile is located.

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