Journal of Korea Multimedia Society (한국멀티미디어학회논문지)

Korea Multimedia Society (한국멀티미디어학회)
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A Stabilization of MC-BCS-SPL Scheme for Distributed Compressed Video Sensing

분산 압축 비디오 센싱을 위한 MC-BCS-SPL 기법의 안정화 알고리즘

  • Ryu, Joong-seon (Dept. of Multimedia Eng., Graduate School of Info. & Comm., Hanbat National Universiy) ;
  • Kim, Jin-soo (Dept. of Info. & Comm. Eng., Hanbat National University)
  • Received : 2017.02.16
  • Accepted : 2017.04.19
  • Published : 2017.05.31
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Abstract

Distributed compressed video sensing (DCVS) is a framework that integrates both compressed sensing and distributed video coding characteristics to achieve a low complexity video sampling. In DCVS schemes, motion estimation & motion compensation is employed at the decoder side, similarly to distributed video coding (DVC), for a low-complex encoder. However, since a simple BCS-SPL algorithm is applied to a residual arising from motion estimation and compensation in conventional MC-BCS-SPL (motion compensated block compressed sensing with smoothed projected Landweber) scheme, the reconstructed visual qualities are severly degraded in Wyner-Ziv (WZ) frames. Furthermore, the scheme takes lots of iteration to reconstruct WZ frames. In this paper, the conventional MC-BCS-SPL algorithm is improved to be operated in more effective way in WZ frames. That is, first, the proposed algorithm calculates a correlation coefficient between two reference key frames and, then, by selecting adaptively the reference frame, the residual reconstruction in pixel domain is performed to the conventional BCS-SPL scheme. Experimental results show that the proposed algorithm achieves significantly better visual qualities than conventional MC-BCS-SPL algorithm, while resulting in the significant reduction of the decoding time.

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References

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