Vehicular camera and method for periodic calibration of vehicular camera

  • US 9,150,155 B2
  • Filed: 01/13/2011
  • Issued: 10/06/2015
  • Est. Priority Date: 01/13/2010
  • Status: Active Grant
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First Claim
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1. A camera for a vehicle, said camera comprising:

  • a lens positioned to capture a view behind a vehicle, wherein the view includes a portion of the bumper of the vehicle;

    an imager including an image sensor and an imager microcontroller, wherein the image sensor is positioned to receive images from the lens;

    a camera microcontroller configured to control the application of an overlay to the images, wherein the camera microcontroller is operable to receive data from the imager microcontroller relating to bars of pixels on the image sensor, wherein the camera microcontroller is further operable to detect a reference point in the images using the data and is operable to determine an offset amount with which to shift the overlay on the images; and

    wherein the camera microcontroller is operable to detect the reference point iteratively using data from the imager microcontroller relating to successively smaller bars of pixels on the image sensor.

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