발간년도 : [2016]
| 논문정보 |
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| 논문명(한글) |
[Vol.11, No.6] Development of a Trajectory Measurement System for Pen-type Input Devices |
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| 논문투고자 |
Goo-Cheol Jeong, Won-Hyeong Park, Sang-Youn Kim |
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| 논문내용 |
Recently, pen-type input devices have been widely used for recognizing the handwriting of a user and conveying handwritten data to electronic devices. Many pen-type input devices adopt an inertia measurement unit (IMU), which is fabricated by MEMS technology, to sense its motion. However, it is not easy to accurately measure the handwritten trajectory for a period of time with the MEMS IMU because the amount of IMU errors (dynamic drift, static drift, and stochastic drift) rapidly increases with time. The one of the most important factors in pen-type input devices based on MEMS IMU is to measure and to compute the real handwritten trajectory estimated by the IMU. Therefore, in this paper we design and implement a measurement experimental device to determine the real handwritten trajectory, thereby allowing intuitive human-computer interaction. In order to precisely investigate the real handwritten trajectory of a user, we use a haptic device (PHANToMTM) which is a mechanical device that is specifically used for providing haptic feedback to a user. After that, we attach the pen-type device to the gimbal of the PHANToMTM to measure the trajectories at the same time. Experiments are conducted to compare the handwritten trajectory from the IMU and the trajectory from haptic device. From the results, it is considered that the motion of the pen-type device is almost same as that of PHANToMTM, and furthermore it becomes writing posture. |
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