Vehicle vision system
First Claim
1. A vehicle viewing system for displaying an image of a scene to a vehicle operator, the system comprising:
- a camera system to generate a signal corresponding to the scene by integrating light from the scene incident on pixel cells, the pixel cells having a variable integration time;
a display system to present the image of the scene; and
a processor system in communication with the camera system and the display system, the processor system operable to determine the camera system integration time based on brightness levels in the scene.
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Accused Products
Abstract
A vehicle viewing system including a camera system for generating a signal corresponding to a scene by integrating light from the scene incident on pixel cells having a variable integration time, a display system for presenting a visual representation of the scene, and a processor system operable to determine the camera system integration time based on brightness levels in the scene. The camera system preferably includes and an input attenuating filter to limit light striking the optical array. The processor system includes an image brightness detector to determine overall image brightness and a display control to determine luminance settings for the display system. The processor system may determine the intensity of the display system based on the brightness of the scene, ambient light levels, and glare on the display. The display system includes a display and a display attenuation filter for limiting the intensity as viewed by the operator.
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Citations
21 Claims
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1. A vehicle viewing system for displaying an image of a scene to a vehicle operator, the system comprising:
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a camera system to generate a signal corresponding to the scene by integrating light from the scene incident on pixel cells, the pixel cells having a variable integration time;
a display system to present the image of the scene; and
a processor system in communication with the camera system and the display system, the processor system operable to determine the camera system integration time based on brightness levels in the scene. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A system for determining brightness levels in an image developed by a vehicle viewing system, the image composed of a plurality of digitized pixel values, the system comprising:
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means for reading each of the plurality of digitized pixel values;
logic for determining into which of a plurality of ranges each of the digitized pixel values falls;
a counter corresponding to each of the plurality of ranges; and
a controller in communication with the means for reading values, the range determination logic and the counters, the controller operative to read a value, route the value through the determination logic, increment the corresponding counter, and repeat for each value.
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20. A system for determining a luminance setting for each of a plurality of display pixels in a vehicle viewing system, wherein each display pixel represents a corresponding image pixel, and each image pixel having a brightness level, the system comprising:
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means for determining a histogram from image pixel brightness levels; and
a logic for determining the luminance for each display pixel based on the brightness of the corresponding image pixel and the histogram. - View Dependent Claims (21)
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Specification