Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
권호 표지
DOI QR코드

DOI QR Code

AHRS Sensor Data Correction for Improved Immersion in VR

VR의 몰입감 향상을 위한 AHRS 센서 데이터 값 보정

  • Oh, Am-Suk (Department of Digital Media Engineering, Tongmyong University)
  • Received : 2018.09.27
  • Accepted : 2018.10.20
  • Published : 2018.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

The VR / AR market has grown significantly due to the development of virtual reality and augmented reality in the core technology field of the 4th Industrial Revolution. Since VR is basically focused on space and time, and the human brain is very sensitive to temporal events, it is important to make accurate I / O interface technology, one of the virtual reality technologies, not to affect the brain's cognitive ability. VR depends on the technology of the hardware such as the display and the sensor for biometric signal recognition. In this paper, in order to prevent the sensitive brain from affecting the sensor device in consideration of hardware dependency of VR, it is necessary to make various corrections to lower the motion to photon (MTP) to 20m / s or less experiments on the method and filtering were carried out.

4차 산업혁명의 핵심 기술 분야의 가상현실(Virtual Reality)과 증강현실(Augmented Reality)의 발달로 인해 VR/AR시장이 크게 성장하였다. VR은 기본적으로 공간과 시간에 초점을 맞추고 있고, 인간의 두뇌는 시간적 사건에 매우 민감하기 때문에 두뇌의 인지능력에 영향을 주지 않기 위해선 가상현실 기술 중 하나인 입출력 인터페이스 기술을 정확하게 만드는 것이 중요하다. VR은 디스플레이와 생체신호인식을 위한 센서 등 하드웨어의 기술의존도가 상당하다. 본 논문에서는 VR의 하드웨어 의존도를 고려해 센서 디바이스를 이용하여 민감한 두뇌에 영향을 끼치지 않기 위해 사용자 움직임이 디스플레이 화면에 완전히 반영되는 시간 MTP(Motion to Photon)을 20m/s 이하로 낮추기 위한 여러 가지 보정방법과 필터링에 대한 실험을 진행하였다.

Keywords

HOJBC0_2018_v22n11_1413_f0001.png 이미지

Fig. 1 Full hardware configuration

HOJBC0_2018_v22n11_1413_f0002.png 이미지

Fig. 2 Arduino NANO

HOJBC0_2018_v22n11_1413_f0003.png 이미지

Fig. 3 Arduino NANO Schematic

HOJBC0_2018_v22n11_1413_f0004.png 이미지

Fig. 4 Arduino Nano Configuration Diagram

HOJBC0_2018_v22n11_1413_f0005.png 이미지

Fig. 5 MPU-9250 Sensor

HOJBC0_2018_v22n11_1413_f0006.png 이미지

Fig. 6 Information of axes in three-dimensional space

HOJBC0_2018_v22n11_1413_f0007.png 이미지

Fig. 7 Process of sensor data

HOJBC0_2018_v22n11_1413_f0008.png 이미지

Fig. 8 Circular process of step-by-step formula of multidimensional Kalman filter

HOJBC0_2018_v22n11_1413_f0009.png 이미지

Fig. 9 Data measurement of acceleration sensor

HOJBC0_2018_v22n11_1413_f0010.png 이미지

Fig. 10 Data measurement and drift phenomenon of geomagnetic sensor

HOJBC0_2018_v22n11_1413_f0011.png 이미지

Fig. 11 Measure the data through sensor angle and complementary filter

HOJBC0_2018_v22n11_1413_f0012.png 이미지

Fig. 12 Comparison of Complementary and Kalman Filter Data

HOJBC0_2018_v22n11_1413_f0013.png 이미지

Fig. 13 Comparison of processing time of complement ary filter and Kalman filter

References

  1. J. S. Lee, J. A. Noh, S. H. Lim and S. J Lee, "An Activity Contents Technology Trend Based on Virtual Reality," ETRI Electronics and Telecommunications Trends, vol. 27, no. 3, pp. 1-73, Mar. 2012.
  2. J. Y. Jung, J. S. Na, C. W. Lee, G. Y. Lee and J. H. Kim, "Prediction of head movements using neck EMG for VR," Journal of Sensor Science and Technology, vol. 25, no. 5, pp. 365-370, May 2016. https://doi.org/10.5369/JSST.2016.25.5.365
  3. J. S. Park and Y. C. Seok, "Advertisement Analysis System with Eye Tracking VR HMD(Virtual Reality Head Mounted Display," Smart media journal, vol. 5, no. 3, pp. 1-5, Mar. 2016.
  4. Zhang, H. L. Choi, B. S. Kim and J. W. Lee, "Trends Analysis on virtual reality," ETRI Electronics and Telecommunications Trends, vol. 31, no. 4, pp. 23-35, Apr. 2016.
  5. J. Borenstein, L. Ojeda, and S. Kwanmuang, "Heuristic reduction of gyro drift for personnel tracking systems," The Journal of navigation, vol. 62, no. 1, pp. 41-58, Jan. 2009. https://doi.org/10.1017/S0373463308005043
  6. S. H. Fang and T. N. Lin, "Principal component localization in indoor WLAN environments," IEEE Trans. on MobileComputing, vol. 11, no. 1, pp. 100-110, Jan. 2012.
  7. C. Huang, Z. Liao, and L. Zhao, "Synergism of INS and PDR in self-contained pedestrian tracking with a miniature sensor module," IEEE Sensors Journal, vol. 10, no. 8, pp. 1349-1359, Aug. 2010. https://doi.org/10.1109/JSEN.2010.2044238
  8. Y. Zhou, C. L. Law, Y. L. Guan, and F. Chin, "Indoor elliptical localization based on asynchronous UWB range measurement," IEEE Trans. on Instrumentation and Measurement, vol. 60, no. 1, pp. 248-257, 2011. https://doi.org/10.1109/TIM.2010.2049185
  9. J. Park and J. Lee, "A beacon color code scheduling for the localization of multiple robots," IEEE Trans. on Industrial Informatics, vol. 7, no. 3, pp. 467-475, Mar. 2011. https://doi.org/10.1109/TII.2011.2158833
  10. Oculus. Oculus-Left[Internet]. Available: https://www.oculus.com/rift/
  11. Y. M. Lim and T. H. Jo, "Development Direction and Implications of Virtual Reality / Augmented Reality Technology," Software Policy & Research Institute Issu Report, vol. 14, pp. 1-23, Jul. 2017.
  12. F. Ramsey and R. Harle, "An analysis of the accuracy of bluetooth low energy for indoor positioning applications," in proceedings of the 27th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2014), Florida: FL, vol. 812, pp. 201-210, Sep. 2014.
  13. S. K. Song, "Regulatory Reform Solution of VR Contents Industry based on Simulator," Journal of the Korea Institute of Information and Communication Engineering, vol. 21, no. 11, pp. 2083-2088, Nov. 2017. https://doi.org/10.6109/JKIICE.2017.21.11.2083
  14. R. J. Conejar, H. K. Kim, "A Review on Mobile Services Secure Mobility Platform," Journal of Security Engineering, vol. 12, no. 5, pp. 525-532, May 2015. https://doi.org/10.14257/jse.2015.10.09
  15. J. C. Na, "Optimization in Cooperative Spectrum Sensing," Asia-pacific Journal of Convergent Research Interchange, HSST, ISSN : 2508-9080, vol. 3, no. 1, pp. 19-31, March 2017.
  16. K. H. Baek, J. Lee, "Live-Action VR Re-lighting Pipeline Using Depth Information," Journal of the Korea Institute of Information and Communication Engineering, vol. 22, no. 9, pp. 1214-1219, Sep. 2018. https://doi.org/10.6109/JKIICE.2018.22.9.1214