Kai S. Kunze, Paul Lukowicz, Kurt Partridge, Bo Begole. Which Way Am I Facing: Inferring Horizontal Device Orientation from an Accelerometer Signal. In 13th IEEE International Symposium on Wearable Computers (ISWC 2009), 4-7 September 2009, Linz, Austria. pages 149-150, IEEE, 2009. [doi]
Abstract is missing.