Detection of obstacles at night by analysis of shadows
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United States of America Patent
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Jul 21, 2020
Grant Date -
N/A
app pub date -
Mar 29, 2018
filing date -
Dec 12, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A driver assistance systems mountable in a host vehicle while the host vehicle is moving forward with headlights on for detection of obstacles based on shadows. The driver assistance system includes a camera operatively connectible to a processor. A first image frame and a second image frame are captured of a road. A first dark image patch and a second dark image patch include intensity values less than a threshold value. The first and the second dark image patches are tracked from the first image frame to the second image frame as corresponding images of the same portion of the road. Respective thicknesses in vertical image coordinates are measured of the first and second dark image patches responsive to the tracking.
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