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Self-calibration for a catadioptric camera

  • US 7,548,253 B2
  • Filed: 12/15/2004
  • Issued: 06/16/2009
  • Est. Priority Date: 06/12/2000
  • Status: Expired due to Term
First Claim
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1. A method for automatically calibrating a wide field-of-view camera, comprising:

  • obtaining a sequence of omni-directional images from the camera;

    tracking a feature across the sequence of omni-directional images to obtain a feature track;

    defining an objective function as an error between an actual location and a predicted location of the feature in the feature track across two images in the sequence omni-directional images;

    optimizing the objective function to automatically determine an optimal set of calibration parameters for the camera that includes an aspect ratio and an image skew.

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