Method for enhancing vehicle camera image quality

  • US 9,774,790 B1
  • Filed: 06/12/2017
  • Issued: 09/26/2017
  • Est. Priority Date: 09/26/2011
  • Status: Active Grant
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First Claim
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1. A method of image enhancement for a vehicle vision system, said method comprising:

  • (a) providing a camera at a vehicle so that the camera has an exterior field of view;

    (b) providing a processor operable to process image data;

    (c) capturing multiple frames of image data with the camera;

    (d) executing a first brightness transfer function on a current frame of image data captured by the camera to generate a first enhanced image frame;

    (e) retrieving at least one previously captured frame of image data;

    (f) executing a second brightness transfer function on the at least one previously captured frame of image data to generate a second enhanced image frame, wherein the second brightness transfer function is different from the first brightness transfer function;

    (g) blending the first and second enhanced image frames to generate a blended enhanced image frame;

    repeating steps (d)-(g) so as to generate multiple blended enhanced image frames;

    (h) detecting, via processing of blended enhanced image frames by the processor, presence of an object in the field of view of the camera; and

    (i) generating an output responsive to detection of the object present in the field of view of the camera.

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