Superior augmented reality registration by integrating landmark tracking and magnetic tracking
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
X Vision: a portable substrate for real-time vision applications
Computer Vision and Image Understanding
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High position and orientation accuracy is required in augmented reality systems. This paper presents an extension to the well known XVision library for real-time tracking. We implement a real-time sub-pixel accuracy edge tracking algorithm estimating edge position and orientation based on "virtual edge" localization in a 5 × 5 window. In addition, we give a simple yet effcient heuristic for identifying corners. Experiments demonstrate results for sub-pixel edge and corner tracking superior to the original XVision primitives.