MAP ZDF segmentation and tracking using active stereo vision: Hand tracking case study

A maximum a posterior probability zero disparity filter (MAP ZDF) ensures coordinated stereo fixation upon an arbitrarily moving, rotating, re-configuring hand, performing marker-less pixel-wise segmentation of the hand. Active stereo fixation permits real-time foveal hand tracking and segmentation over a large visual workspace, allowing investigation of unrestricted natural human gesturing. Hand segmentation is shown to be robust to lighting conditions, defocus, hand colour variation, foreground and background clutter including non-tracked hands, and partial or gross occlusions including those due to non-tracked hands. The system operates at approximately 27fps on a 3GHz single processor PC. Key words: Active Stereo Vision, Zero Disparity Filter, Markov Random Field, Hand Segmentation and Tracking, Human-Computer Interaction

• Type: Journal
• Year: 2007
• Where: CVIU
• Authors: Andrew Dankers, Nick Barnes, Alexander Zelinsky
• Keywords: Active Stereo, CVIU 2007, Hand Segmentation, Stereo fixation