×

Vehicular image processing device and vehicular image processing program

  • US 8,681,221 B2
  • Filed: 03/24/2009
  • Issued: 03/25/2014
  • Est. Priority Date: 03/26/2008
  • Status: Active Grant
First Claim
Patent Images

1. A vehicular image processing device configured to process an image acquired from a photographing unit mounted in a vehicle and detect a lane mark on a road where the vehicle is travelling from the processed image, comprising:

  • a kernel setting unit configured to set a kernel function for smoothing the image acquired from the photographing device so that the width of a smoothed image in a predefined direction is in a predefined range greater than the width of an image portion of the lane mark in the predefined direction;

    a smoothing unit configured to smooth the acquired image according to a filtering process by the usage of the kernel function set by the kernel setting unit for each pixel in the image, the smoothing kernel is disposed with the pixel as the central pixel, and the smoothing process is performed;

    a variation degree calculating unit configured to calculate, as a pixel value a variation degree, a difference between a pixel value of each pixel in the acquired image and a pixel value of each corresponding pixel in the smoothed image processed by the smoothing unit;

    a pixel value replacing unit configured to replace in the smoothed image, for each of the pixels in the acquired image whose pixel value variation degree is equal to or smaller than a predefined value, the corresponding pixel value with a specific value; and

    a lane mark detecting unit configured to detect the lane mark from the smoothed image which has been subjected to pixel value replacing by the pixel value replacing unit.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×