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Types Of Motion Tracking Systems

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There are two main types of motion tracking systems. Sensor based tracking systems mainly rely on contact with the moving object to pick up on signals from movement. Some examples of sensing techniques are inertial, magnetic, and ultrasonic. Optical or vision based system require the object in motion to be seen from the device. Often this includes optical markers that are detected by a camera. Both tracking methodologies and associated devices have their advantages and disadvantages.

2.1 Sensor Based Methods
Cyber Gloves are one type of wireless sensor device that can be used in trajectory model for hand gesture recognition (Trajectory Modeling in gesture recognition using cybergloves). Glove attached with sensors determine hand pose by converting sensed finger flexion into electrical signals (Design considerations for a wearable monitor to measure finger posture). Although there are different configurations for cyber gloves, most consists of sensors on the back of the glove that detect finger range of motion and flexion.
Inertial measurement units such as accelerometers can measure things such as gesture withdrawal capture movement information about hand rotation, and measure acceleration of movement. However, accelerometers can be uncomfortable for the participant to wear since they are often attached to a band on the wrist. Additionally, they do not provide much information for recognition of finger movements (Hand Gesture Recognition Research Based on Surface EMG

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