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

  • US 10,434,944 B2
  • Filed: 08/30/2017
  • Issued: 10/08/2019
  • 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 color camera disposed at a vehicle and having a field of view exterior of the vehicle;

    wherein said color camera comprises a photosensor array comprising at least 480 rows of photosensing elements and at least 640 columns of photosensing elements;

    said color camera capturing image data;

    wherein image data captured by said color camera is processed using an in-line dithering algorithm;

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

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

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

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