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Image processing apparatus and method

  • US 7,095,432 B2
  • Filed: 07/17/2002
  • Issued: 08/22/2006
  • Est. Priority Date: 07/18/2001
  • Status: Active Grant
First Claim
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1. An image processing apparatus comprising:

  • an image input unit configured to input a plurality of images in a time series, each input image including a boundary line extending toward a vanishing point on a plane;

    a reverse projection image generation unit configured to calculate a differential vector of an intensity value of a pixel on an input image, to calculate a normal vector of the pixel for a direction of the boundary line passing through the pixel, to calculate an inner product value between the differential vector and the normal vector of the pixel on the input image, and to project the inner product value of the pixel onto the plane, the plane onto which the inner product value is projected being a reverse projection image; and

    a boundary line detection unit configured to detect the boundary line from the reverse projection image based on the inner product value.

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