Journal of the Institute of Electronics Engineers of Korea SP (대한전자공학회논문지SP)

The Institute of Electronics and Information Engineers (대한전자공학회)
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An Efficient Compression Method of Integral Images Using Adaptive Block Modes

적응적인 블록 모드를 이용한 집적 영상의 효율적인 압축 방법

  • Received : 2010.03.10
  • Published : 2010.11.25
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Abstract

In this paper, we propose an efficient compression method of the integral images. The integral imaging is a well-known technique to represent and record three-dimensional images. The proposed method is based on three dimensional discrete cosine transform (3D-DCT). The 3D-DCT techniques for the integral images have been reported as an efficient coding method for the integral images which reduces the redundancies between adjacent elemental images. The proposed method is a compression method efficient to integral images using adaptive block mode(ABM), based on the 3D-DCT technique. In the ABM, 3D-DCT blocks adaptive to the characteristics of integral images are constructed, which produces variable block size 3D-DCT blocks, and then 3D-DCTs for the 3D blocks are performed. Experimental results show that the proposed method gives significant improvement in coding efficiency. Especially, at the high bit-rates, the proposed method is more excellent since the overhead incurred by the proposed method take less part of the total bits.

본 논문에서는 집적 영상을 효율적으로 압축하는 방법을 제안한다. 집적 영상은 3차원 영상을 기록하고 표현하는 대표적인 기술이다. 제안된 방법은 3D 이산 코사인 변환(3D-DCT)를 기반으로 하고 있다. 집적 영상 부호화에서 3D-DCT는 인접요소 영상간의 중복성을 줄이는 효율적인 압축 방법으로 알려져 있다. 제안방법은 3D-DCT에 기반 하면서 적응적인 블록 모드를 이용한 효과적인 집적영상 압축 방법으로서, 영상의 특성에 따라 적응적으로 3D-DCT 블록을 구성함으로써 가변블록 크기 3D-DCT 블록을 생성하고, 이 가변블록 크기의 3D 블록에 대해 3D-DCT를 수행한다. 실험 결과를 보면 제안방법이 기존 방법과 비교해서 더욱 높은 압축 효율을 보여주었다. 특히 영상이 복잡하여 많은 비트량이 발생하는 영상이 오버헤드 비트의 영향이 적기 때문에 더 좋은 압축 효율을 보여주었다.

Keywords

References

  1. Okoshi T, Three dimensional imaging techniques, Academic Press, 1976.
  2. N. Davies and M. McCormick, "Holoscopic imaging with true 3D-content in full natural colour," J. Phot. Science, Vol. 40, pp. 46-49, 1992.
  3. N. Davies, M. McCormick and M. Brewin, "Design and analysis of an image transfer system using microlens arrays," Opt. Eng., vol. 33, no. 11, pp. 3624-3633, 1994. https://doi.org/10.1117/12.181580
  4. F. Okano, H. Hoshino, J. Arai, and I. Yuyama, "Real-time pickup method for a threedimensional image based on integral photography," Appl. Opt. 36, 1598-1603, 1997. https://doi.org/10.1364/AO.36.001598
  5. F. Okano, H. Hoshino, J. Arai, and I. Yuyama, "Three-dimensional video system based on integral photography," Opt. Eng. 38, 1072-1077, 1997.
  6. S. A. Benton, ed., Selected Papers on Three-Dimensional Displays, SPIE Optical Engineering Press, Bellingham, WA., 2001.
  7. D. H. McMahon and H. J. Caulfield, "A technique for producing wide-angle holographic displays," Appl. Opt. 9, 91-96, 1970. https://doi.org/10.1364/AO.9.000091
  8. T. Okoshi, "Three-dimensional displays," in Proceedings of IEEE 68, 548-564, 1980. https://doi.org/10.1109/PROC.1980.11695
  9. G. Lippmann, "La photographic integral," C. R. Acad. Sci. 146, 446-451, 1908.
  10. C. B. Burckhardt, "Optimum parameters and resolution limitation of integral photography," J. Opt. Soc. Am. 58, 71-76, 1968. https://doi.org/10.1364/JOSA.58.000071
  11. S. Yeom, A. Stern, and B. Javidi, "Compression of 3D color integral images," Opt. Express Vol. 12, pp. 1632-1642, 2004. https://doi.org/10.1364/OPEX.12.001632
  12. N. Sgouros, I. Kontaxakis, and M. Sangriotis, "Effect of different traversal schemes in integral image coding," Appl. Opt. 47, 28-37, 2008. https://doi.org/10.1364/AO.47.000D28
  13. E. Elharar, A. Stern, and O. Hadar, "A Hybrid Compression Method for Integral Images Using Discrete Wavelet Transform and Discrete Cosine Transform," Journal of display technology, vol. 3, no. 3, 2007.
  14. A. Aggoun and M. Tabit "Data compression of integral images for 3D TV," 3DTV Conference, pp. 1-4, 2007.
  15. R.K.W. Chan, M.C. Lee, "3D-DCT quantization as a compression technique for video sequences," VSMM'97. Proceedings., International Conference, pp.188-196, Sept. 1997.
  16. A. Aggoun and M. Tabit "Data compression of integral images for 3D TV," 3DTV Conference, pp. 1-4, 2007.
  17. G. Bjontegaard, "Calculation of average PSNR differences between RD-curves," ITU-T Q-6/16, Doc.VCEG-M33, 2001.