Vehicle vision system with reduced image color data processing by use of dithering

  • US 9,751,465 B2
  • Filed: 04/16/2013
  • Issued: 09/05/2017
  • Est. Priority Date: 04/16/2012
  • Status: Active Grant
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First Claim
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1. A vision system for a vehicle, said vision system comprising:

  • a camera disposed at a vehicle and having a field of view exterior of the vehicle;

    wherein said camera comprises an RGB photosensor array comprising multiple rows of photosensing elements and multiple columns of photosensing elements;

    wherein an in-line dithering algorithm is applied to individual lines of photosensing elements of said photosensor array in order to reduce at least one of (i) color data transmission and (ii) color data processing;

    wherein said in-line dithering algorithm comprises at least one of (i) an in-row dithering algorithm that is applied to individual rows of photosensing elements of said photosensor array and (ii) an in-column dithering algorithm that is applied to individual columns of photosensing elements of said photosensor array;

    wherein said in-line dithering algorithm is operable to determine most significant bits and least significant bits of color data captured by a photosensing element of said photosensor array; and

    wherein said in-line dithering algorithm determines the most significant bits and the least significant bits of first color data captured by a first photosensing element and wherein the least significant bits of the first color data are added to second color data captured by a second photosensing element to generate second adjusted color data, and wherein said in-line dithering algorithm determines the most significant bits and the least significant bits of the second adjusted color data.

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