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Vision-based augmented reality system using invisible marker

  • US RE45,031 E1
  • Filed: 08/31/2012
  • Issued: 07/22/2014
  • Est. Priority Date: 07/30/2004
  • Status: Active Grant
First Claim
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1. A vision-based augmented reality system using an invisible marker, comprising:

  • a target object (TO) including an infrared marker (IM) drawn by an invisible infrared light-emitting material;

    a visible-ray camera for capturing an image of the TO;

    an infrared-ray camera for capturing an image of the IM included in the TO image;

    an optical axis converter for transmitting a visible ray received from the TO to the visible-ray camera, transmitting an infrared ray received from the TO to the infrared-ray camera, and allowing the infrared-ray camera and the visible-ray camera to have the same viewing point;

    an image processing system for receiving the infrared marker image from the infrared-ray camera, receiving the TO image from the visible-ray camera, separating the infrared marker image and the TO image from each other, real-time monitoring a position and pose of the IM associated with the infrared-ray camera, real-time tracking a position and pose of the TO, and rendering a prepared virtual image to the TO image based on the tracked position and pose of the TO to generate a new image; and

    an output unit for displaying the image received from the image processing system on a screen.

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