VEHICLE VISION SYSTEM WITH COLOR CORRECTION
First Claim
1. A vision system for a vehicle, said vision system comprising:
- a color camera disposed at a vehicle and having a field of view exterior of the vehicle, wherein said color camera comprises an imaging array having a plurality of photosensing pixels and at least one color filter disposed in front of at least some of said photosensing pixels; and
an image processor operable to process image data captured by said color camera, wherein processing of captured image data by said image processor comprises utilization of a color correction algorithm that includes a color correction matrix.
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Abstract
A vision system for a vehicle includes a color camera disposed at a vehicle and having an exterior rearward field of view. The color camera includes an imaging array of photosensing pixels and at least one color filter disposed at or in front of at least some of the photosensing pixels. An image processor is operable to process image data captured by the color camera. Processing of captured image data by the image processor includes utilization of a color correction algorithm that includes a color correction matrix. The color correction matrix algorithm may utilize a 3×3 color correction matrix. The color correction algorithm may include a color correction matrix algorithm and a histogram algorithm that function to determine a color correction for the captured image data.
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Citations
20 Claims
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1. A vision system for a vehicle, said vision system comprising:
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a color camera disposed at a vehicle and having a field of view exterior of the vehicle, wherein said color camera comprises an imaging array having a plurality of photosensing pixels and at least one color filter disposed in front of at least some of said photosensing pixels; and an image processor operable to process image data captured by said color camera, wherein processing of captured image data by said image processor comprises utilization of a color correction algorithm that includes a color correction matrix. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A vision system for a vehicle, said vision system comprising:
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a color camera disposed at a vehicle and having a field of view exterior of the vehicle, wherein said color camera comprises an imaging array having a plurality of photosensing pixels and at least one color filter disposed in front of at least some of said photosensing pixels; an image processor operable to process image data captured by said color camera, wherein processing of captured image data by said image processor comprises utilization of a color correction algorithm that includes a color correction matrix; wherein said color correction algorithm comprises a color correction matrix algorithm and a histogram algorithm to determine a color correction for the captured image data; wherein an output of said color correction matrix algorithm is used as an input to said histogram algorithm and an output of said histogram algorithm is used as an input to said color correction matrix algorithm; and wherein said color correction matrix algorithm and said histogram algorithm are repeatedly applied until a desired level of color correction is determined. - View Dependent Claims (17, 18)
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19. A vision system for a vehicle, said vision system comprising:
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a color camera disposed at a vehicle and having a field of view exterior and rearward of the vehicle, wherein said color camera comprises an imaging array having a plurality of photosensing pixels and at least one color filter disposed in front of at least some of said photosensing pixels; an image processor operable to process image data captured by said color camera, wherein processing of captured image data by said image processor comprises utilization of a color correction algorithm that includes a color correction matrix; wherein said color correction algorithm comprises a color correction matrix algorithm and a histogram algorithm to determine a color correction for the captured image data; wherein said vision system includes a light source that comprises a Planckian emitter; wherein said color correction matrix algorithm and said histogram algorithm operate to migrate a plurality of data points representative of white points towards white points along a Planckian locus; and wherein at least one of (i) said histogram algorithm does not use said data points when an RGB component of said data points exceeds a threshold fraction of full scale and (ii) said histogram algorithm does not use said data points when the RGB components of said data points are substantially equal. - View Dependent Claims (20)
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Specification