Local positioning apparatus
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United States of America Patent
Stats
-
May 18, 1999
Grant Date -
N/A
app pub date -
Apr 25, 1996
filing date -
Apr 25, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
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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