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Gesture-Tracking in Real Time with Dynamic Regional Range Computation

✍ Scribed by Leonid V. Tsap

Book ID
102977194
Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
608 KB
Volume
8
Category
Article
ISSN
1077-2014

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✦ Synopsis

Gesture-Tracking in Real Time with Dynamic Regional Range Computation T his paper presents a new approach to the range data utilization in a gesture-tracking system. The use of three-dimensional data is essential for human motion analysis; however, the speed of complete range estimation prohibits from including it in most realtime systems. This work describes a gesture-tracking system using real-time local range ondemand. The system represents a gesture-controlled interface for interactive visual exploration of large data sets. The paper describes a method performing range processing only when necessary and where necessary. Range data is processed only for non-static regions of interest. This is accomplished by a set of filters on the color, motion, and range data. The speed-up achieved is between 1.70 and 2.15. The algorithm also includes a robust skin-color segmentation insensitive to illumination changes. Selective range processing results in dynamic regional range images that contain only information needed by the system.

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## Abstract A real‐time magnetic resonance imaging (MRI) acquisition sequence was evaluated for the assessment of left ventricular wall motion (WM) and wall thickening (WT). Ten normal volunteers and 21 patients were studied. Short‐axis cine images of the left ventricle (LV) were acquired with a fa