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A Design of Fuzzy PI Controller for Improving AE System of Mobile Digital Camera

모바일 디지털 카메라의 AE 시스템 개선을 위한 퍼지 PI 제어기 설계

  • Published : 2009.08.01

Abstract

Recently, digital camera module has been extensively utilized in mobile devices. The digital camera module should be smaller and lighter than digital still camera module to be used in mobile device. But, mobile camera can't get high quality image as good as the one of digital still camera due to the optical limitation of minimized module. Especially, AE system of mobile camera occurs excessive hunting and oscillation due to miniaturization of module. In this paper, improved AE algorithm which is applied fuzzy PI control is suggested to compensate this point.

Keywords

References

  1. W. H. Calm and Ch. T. Youe, "Video CCD based portable digital still camera," IEEE Trans. on Consumer Electronics, vo1.41, issue 3, pp. 455-459, Aug. 1995 https://doi.org/10.1109/30.468046
  2. J. Nakamura, "Image sensors and signal processing for digital still cameras," Taylor & Francis, 2006
  3. T. Tadao, Automatic exposure device and photometry device in a camera, U.S. Patent 5664242, 1997
  4. S. Tatsuya., F. Hidehiko, T. Kenji, and I. Kenji, "Automatic exposure controlling device for a camera," U.S. Pat. 5452047, 1995
  5. Y. Huang and S. Yasunobu, "A general practical method for fuzzy PID controller from conventional PID control," IEEE Trans. on Fuzzy Systems, vol. 2, no. 4, Nov. 1994
  6. S. Shimizu, T. Kondo, T. Kohashi, M. Tsuruta, and T. Komuro, "A new algorithm for exposure control based on fuzzy logic for video cameras," IEEE Trans. Consumer Electronics, vol. 38, issue 3, pp. 617-623, Aug. 1992 https://doi.org/10.1109/30.156745
  7. L. Zheng, "A practical guide to tune of proportional and integral(PI) like fuzzy controllers," IEEE International Coriference on Fuzzy Systems, pp. 633-640, Mar. 1992. https://doi.org/10.1109/FUZZY.1992.258734
  8. K. Hayashi, A. O. K. Shiranita, "Improvement of conventional method of PI fuzzy control," IEICE Trans. Fundamentals, vol. E84-A, no. 6, June 2001
  9. J. Teuber, Digital Image Processing, Prentice Hall, 1993
  10. L. X. Wang, A Course In Fuzzy Systems And Control, Prentice-Hall, 1997.
  11. R. J. Marks II, "Fuzzy logic technology and application," IEEE Technical Activities Bord, 1994