Fig. 1. Visible light communication principle
Fig. 2. HPF & LPF Mask
Fig. 3. System Concept
Fig. 4. System Flow Chart
Fig. 5. Grayscale & Template Matching
Fig. 6. HPF, LPF & Template Matching
Fig. 7. Matching results by Center value(9.1-9.4)
Fig. 8. Matching results by Center value(9.7, 9.8)
Fig. 9. Template Matching complete
Fig. 10. Matching Time & Detect Data
References
- D.C.O' Brien et al,(2007). Visible Light Communication: state of the art and prospects published in Proc. Wireless World Research Forum
- S. Rajagopal et al.(2009). TG7 Technical Considerations Document IEEE 802.15.7 Task Group Document, Jul.
- G. T. Kim, D. H. Han, K. S. Lee & K. J. Lee. (2014). Analysis Performance of VLC System according to the Transmission Distance and Angle of Incidence. Journal of Convergence for Information Technology, 4(4), 37-42.
- K. J. Lee & G. J. Kim. (2015). The blocking channel to reduce the performance decrease using the low correlation with cyclic delay scheme in LED-ID system. Journal of Digital Convergence, 13(10), 319-325. https://doi.org/10.14400/JDC.2015.13.10.319
- K. J. Lee & G. J. Kim. (2014). Co-channel Interference Reduction using Multi code MC-CDMA in Visual Light Communication System. Journal of Digital Convergence, 12(8), 249-255. https://doi.org/10.14400/JDC.2014.12.8.249
- Y. H. Liu, Z. Z. Yang & S. C. Wang. (2010). A novel sequential-color RGB-LED backlight driving system with local dimming control and dynamic bus voltage regulation. IEEE Transactions on Consumer Electronics, 56(4), 2445-2452. https://doi.org/10.1109/TCE.2010.5681126
- J. b. Xia. (2014). Template matching algorithm based on gradient search. IEEE International Conference on Mechatronics and Control (ICMC), 1472-1475.
- Y. Tanaka, T. Komine, S. Haruyama & M. Nakagawa. (2003). Indoor visible light data transmission system utilizing white LED lights. IEICE TRANS. COMMUN, E86B(8), 2440-2454.
- K. J. Lee. (2018). Dimming Level Control Technique for Lighting / Communication Functions in Visible Light Communication Systems. Journal of Convergence for Information Technology, 8(5), 153-158. https://doi.org/10.22156/CS4SMB.2018.8.5.153
- H. D. Seo & K. J. Lee. (2017). Efficient Data Transmission in LED-based Visible Light Communication Using Variable RGB Interleaving scheme. Journal of Convergence for Information Technology, 7(6), 167-172. https://doi.org/10.22156/CS4SMB.2017.7.6.167