Measurement of Control parameters for Omnidirectional Treadmills using RGBD camera
Ekram, Mohammad Azim Ul
Omnidirectional treadmill systems are an effective platform that allows unconstrained locomotion possibilities to a user for effective VR exploration. There are two most common problems associated with Omnidirectional tread- mill systems. First one is the mechanical design of it. The second one is con- trolling algorithm that controls the treadmill. This thesis focuses on the second problem and presents an algorithm which measures important parameters for controlling the direction and speed of omnidirectional treadmills. The primary objective is to collect skeleton data from Kinect Sensor(RGBD) and measure speed, acceleration and orientation vectors of lower body joints. From these measurements, it is possible to calculate the control parameters for omnidirec- tional treadmills. Using these parameters, the treadmill will try and compensate user motion, to keep the user close to the platform center. Another objective is to validate the parameters found from the algorithm and determine the accu- racy of the algorithm using Kinect camera. Also, this article explores whether the kinect can be a viable replacement for current motion capture systems used for this purpose. Usage of Kinect camera can make VR experience non-invasive and low-cost.
Omnidirectional treadmill, Depth camera, Kinect, Geometric calculation, Virtual environment interface, RGBD, VR
Ekram, M. A. U. (2017). <i>Measurement of control parameters for omnidirectional treadmills using RGBD camera</i> (Unpublished thesis). Texas State University, San Marcos, Texas.