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Volume 26 Issue 7
Jul.  2004
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Wang Zhan-hui, Liu Gui-zhong, Liu Long, Liu Jie-yu. A Fast and Accurate Moving Object Extraction Method from Compressed Video Stream[J]. Journal of Electronics & Information Technology, 2004, 26(7): 1157-1162.
Citation: Wang Zhan-hui, Liu Gui-zhong, Liu Long, Liu Jie-yu. A Fast and Accurate Moving Object Extraction Method from Compressed Video Stream[J]. Journal of Electronics & Information Technology, 2004, 26(7): 1157-1162.

A Fast and Accurate Moving Object Extraction Method from Compressed Video Stream

  • Received Date: 2003-04-27
  • Rev Recd Date: 2003-09-19
  • Publish Date: 2004-07-19
  • In the light of most current segmentation algorithms are of high complexity and huge computation, one algorithm of coarse segmentation in compressed domain and refined segmentation in spatial domain is put forward. The initial coarse segmentation masks from the motion vectors are obtained by applying Estimation Maximum(EM) algorithm. These blocks in the masks can be decompressed to obtain the origin image and the actual edges of the objects can be extracted by applying Canny edge detection and edge tracking only in the segmented regions. By using the proposed algorithm, the amount of data needed to be processed is kept in necessarily minimal, saving the computation time as well as gaining the pixel-wise edges of the segmented objects.
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  • Moscheni F, Bhatacharjee S, Kunt M. Spatiotemporal segmentation based on region merging.IEEE Trans. on PAMI, 1998, PAMI-20(9): 897-915.[2]Dufaux F, Moscheni F, Lippman A. Spatio-temporal segmentation based on motion and static segmentation. In Proc. of ICIP, Washington, USA, 1995: 306-309.[3]Torres L, Garcia D, Mates A. A robust motion estimation and segmentation approach to represent moving images with layers. In Proc. of ICASSP, Munich, Germany, 1997: 2661-2664.[4]Jarnrozik M L, Hayes M H. A compressed domain video object segmentation system. In Proc.of ICIP, New York: USA, 2002: 113-116.[5]Wang H, Chang S F. A highly efficient system for automatic face region detection in MPEG video[J].IEEE Trans. on Circuits and Systems for Video Technology.1998, 7(4):615-628[6]Babu R V, Ramakrishnan K R. Compressed domain motion segmentation for video object extraction. In Proc. of ICASSP, Florida, USA, 2002: 3788-3791.[7]Wang R, Zhang H J, Zhang Y Q. A confidence measure based moving object extraction system built for compressed domain. In Proc. of ISCAS, Geneva, Switzerland, 2000: 21-24.[8]Dempster A, Laird N, Rubin D. Maximum-likelihood from incomplete data via the EM algorithm.Journal of the Royal Statistical Society B, 1977, 39(1): 1-38.[9]Canny J F. A computational approach to edge detection. IEEE Trans. on PAMI, 1986, PAMI8(6): 679-698.
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