Feature Tracking for Mobile Augmented Reality Using Video Coder Motion Vectors

  • Authors:
  • Gabriel Takacs;Vijay Chandrasekhar;Bernd Girod;Radek Grzeszczuk

  • Affiliations:
  • Information Systems Laboratory, Stanford University;Information Systems Laboratory, Stanford University;Information Systems Laboratory, Stanford University;Nokia Research Center, Palo Alto

  • Venue:
  • ISMAR '07 Proceedings of the 2007 6th IEEE and ACM International Symposium on Mixed and Augmented Reality
  • Year:
  • 2007

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Abstract

We propose a novel, low-complexity, tracking scheme that uses motion vectors directly from a video coder. We compare our tracking algorithm against ground truth data, and show that we can achieve a high level of accuracy, even though the motion vectors are rate-distortion optimized and do not represent true motion. We develop a framework for tracking in video sequences with various GOP structures. Such a scheme would find applications in the context of Mobile Augmented Reality. The proposed feature tracking algorithm can significantly reduce the required rate of feature extraction and matching.