Active night vision image intensity balancing system
First Claim
Patent Images
1. A vision system for a vehicle comprising:
- a light source generating an illumination beam directed forward of the vehicle;
a receiver generating a first image signal when said light source is active and a second image signal when said light source is inactive, at least one of said first image signal being generated in response to at least a reflected portion of said illumination beam; and
a controller coupled to said light source and said receiver, said controller generating a fused image signal from said first image signal and said second image signal by way of;
setting a fused value If to an illuminated pixel intensity value Ib when said illuminated pixel intensity value Ib is less than or equal to a non-illuminated pixel intensity value Id ;
setting said fused value If to satisfy the equation;
If=Ib/1+(Ib−
Id)/β
where β
is a predetermined value.
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Abstract
A vision system (10) for a vehicle (14) includes a light source (46) that generates an illumination beam (20). A receiver (62) generates a first image signal and a second image signal. The first image signal is generated in response to a reflected portion of the illumination beam (20). A controller is coupled to the light source (46) and the receiver (62). The controller generates an image in response to the first image signal and the second image signal.
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Citations
6 Claims
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1. A vision system for a vehicle comprising:
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a light source generating an illumination beam directed forward of the vehicle; a receiver generating a first image signal when said light source is active and a second image signal when said light source is inactive, at least one of said first image signal being generated in response to at least a reflected portion of said illumination beam; and a controller coupled to said light source and said receiver, said controller generating a fused image signal from said first image signal and said second image signal by way of; setting a fused value If to an illuminated pixel intensity value Ib when said illuminated pixel intensity value Ib is less than or equal to a non-illuminated pixel intensity value Id ; setting said fused value If to satisfy the equation;
If=Ib/1+(Ib−
Id)/βwhere β
is a predetermined value. - View Dependent Claims (2, 3, 4)
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5. A vision system for a vehicle comprising:
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a light source generating an illumination beam directed forward of the vehicle; a receiver generating a first image signal when said light source is active and a second image signal when said light source is inactive, at least one of said first image signal being generated in response to at least a reflected portion of said illumination beam; an object detection sensor generating an object detection signal; and a controller coupled to said light source and said receiver, said controller selecting a predetermined value β
in response to said object detection signal, said controller generating a fused image signal from said first image signal and said second image signal by way of;setting a fused value if to an illuminated value Ib when said illuminated value lb is less than or equal to a non-illuminated value Id; setting said fused value If to satisfy the equation;
If=Ib /1 +(Ib−
Id)/β
. - View Dependent Claims (6)
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Specification