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Stereo Vision Based 3D Input Device  

Yoon, Sang-Min (Human Computer Interaction Lab., Samsung Advanced Institute of Technology)
Kim, Ig-Jae (Imaging Media Research Center, KIST)
Ahn, Sang-Chul (Imaging Media Research Center, KIST)
Ko, Han-Seok (Department of Electronics Eng., Korea Univ.)
Kim, Hyoung-Gon (Imaging Media Research Center, KIST)
Publication Information
Abstract
This paper concerns extracting 3D motion information from a 3D input device in real time focused to enabling effective human-computer interaction. In particular, we develop a novel algorithm for extracting 6 degrees-of-freedom motion information from a 3D input device by employing an epipolar geometry of stereo camera, color, motion, and structure information, free from requiring the aid of camera calibration object. To extract 3D motion, we first determine the epipolar geometry of stereo camera by computing the perspective projection matrix and perspective distortion matrix. We then incorporate the proposed Motion Adaptive Weighted Unmatched Pixel Count algorithm performing color transformation, unmatched pixel counting, discrete Kalman filtering, and principal component analysis. The extracted 3D motion information can be applied to controlling virtual objects or aiding the navigation device that controls the viewpoint of a user in virtual reality setting. Since the stereo vision-based 3D input device is wireless, it provides users with a means for more natural and efficient interface, thus effectively realizing a feeling of immersion.
Keywords
3D input device; HCI; color; stereo; MAWUPC; PCA; virtual reality;
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Times Cited By KSCI : 1  (Citation Analysis)
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