Vehicular camera with on-board microcontroller

  • US 9,495,876 B2
  • Filed: 07/27/2010
  • Issued: 11/15/2016
  • Est. Priority Date: 07/27/2009
  • Status: Active Grant
  • ×
    • Pin Icon | RPX Insight
    • Pin
First Claim
Patent Images

1. A vehicular camera system, comprising:

  • a rear backup camera comprising a lens and having a field of view that encompasses a rear bumper of a vehicle equipped with said vehicular camera system;

    wherein said rear backup camera comprises an image sensor and a housing;

    wherein the lens and the image sensor are mounted within the housing at a selected position relative to each other, and wherein the image sensor receives raw images from the lens and captures image data;

    a controller, wherein for at least one raw image, the controller is operable to (i) compare captured image data of the rear bumper present in the field of view of said rear backup camera to a known shape of the rear bumper of the vehicle, (ii) responsive to the comparison, determine a distortion correction that is indicative of distortion of the rear bumper in the raw image relative to the known shape of the rear bumper and (iii) apply the distortion correction to the raw image to generate a dewarped image by stretching and compressing portions of the raw image so that the rear bumper in the dewarped image corresponds to the known shape of the rear bumper;

    a display screen disposed in the vehicle and operable to display dewarped images for viewing by a driver of the vehicle while the driver is operating the vehicle;

    wherein the controller is operable to identify a portion of a trailer in the captured image data and, responsive at least in part to identifying the portion of the trailer, is further operable to determine the position of the portion of a trailer in the field of view of the rear backup camera and rearward of the vehicle, and wherein the controller, responsive to the determined position of the portion of the trailer, is operable to apply a first overlay at the portion of the trailer in a first displayed dewarped image to produce an initial displayed dewarped image, and wherein the controller is operable to thereafter maintain the first overlay in a fixed position in subsequent displayed dewarped images, and wherein the portion of the trailer in subsequent displayed dewarped images is movable relative to the first overlay; and

    wherein the controller, responsive at least in part to processing of captured image data, is operable to display a second overlay in displayed dewarped images, and wherein the controller is operable to thereafter move the second overlay in subsequent displayed dewarped images relative to the fixed first overlay as the vehicle is driven to assist the driver of the vehicle in reversing the vehicle towards the trailer.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×