System and method for using texture landmarks for improved markerless tracking in augmented reality applications
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United States of America Patent
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Nov 10, 2009
Grant Date -
Aug 24, 2006
app pub date -
Feb 22, 2006
filing date -
Feb 24, 2005
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Abstract
A method of tracking a pose of a moving camera includes receiving a first image from a camera, receiving a sequence of digitized images from said camera, recording, for each of said sequence of digitized images, the pose and 2D correspondences of landmarks, reconstructing a location and appearance of a 2-dimensional texture patch from 2D correspondences of the landmarks by triangulation and optimization, computing back-projection errors by comparing said reconstructed texture patch with said first received image; and reconstructing said location and appearance of said 2-dimensional texture patch from the 2D correspondences of the landmarks of said sequence of digitized images by triangulation and optimization after eliminating those landmarks with large back-projection errors.
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