Image analysis – Applications – Vehicle or traffic control
Patent
1997-11-18
1999-11-16
Chang, Jon
Image analysis
Applications
Vehicle or traffic control
340937, G06K 900
Patent
active
059871520
ABSTRACT:
In a method of measuring visibility from a vehicle in motion, images taken by an optical-electronic camera are transformed into selected image features establishing the loci of defined brightness variations in the images. A range determination of the selected features relative to the optical-electronic camera is carried out followed by filtration of the range readings to establish the prevailing visibility for a vehicle operator or a sensor system based on image processing. The advantage over conventional active methods is that, without requiring an active transmitter, the true visual object contrast as well as the atmospheric transmission enters into the visibility determination.
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Chang Jon
Patel Jayanti K.
Volkswagen AG
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