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An Efficient Component-Separable Inter Layer Interpolation Scheme Applied in Scalable Video Coding

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Abstract

Recently, active research has conducted on a new emerging video coding standard, scalable video coding (SVC), which adopts a layered coding scheme to generate a multi-layered bit stream for heterogeneous environments. One of the most important features of SVC is the utilization of inter layer prediction coding, and the coding efficiency will be greatly dependent on the design of the inter layer interpolation scheme. In the current working draft, a uniform up-sampling filter is employed which aims to achieve high interpolated precision for both luma and chroma components of coded images, but this results in extremely unnecessary computational complexity which prevents it from being put to practical use. To overcome this, an efficient component-separable inter layer interpolation scheme is proposed in this paper. Based on the basic characteristic of human vision system, this proposed scheme intends to assign suitable filters for different components according to their sensitivities for human eyes. In particular, the 6-tap filter is retained for the luma component but for chroma components, much more simplified filters such as 2-tap and 4-tap filter should be used instead. Experimental results show that when compared with the original scheme, the proposed scheme significantly reduces the computational complexity by saving on coding time while holding the coded bit-rate and PSNR performance. Therefore, this scheme can be applied in the spatial interpolation of scalable video coding.

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Authors and Affiliations

  1. Institute of Photogrammetry and Remote Sensing, Chinese Academy of Surveying and Mapping, Beijing, 100039, China

    Zhang Wang, Jixian Zhang & Haitao Li

  2. Electronics and Information Engineering Department, Huazhong University of Sci. & Tech., Wuhan, 430074, China

    Zhang Wang & Jian Liu

Authors
  1. Zhang Wang
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  2. Jixian Zhang
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  3. Haitao Li
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  4. Jian Liu
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Corresponding author

Correspondence to Zhang Wang.

Additional information

This work was supported by China Postdoctoral Science Foundation (Grant No. 20080430454). Funded by Key Laboratory of Geo-informatics of State Bureau of Surveying and Mapping (Grant No. 200834).

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Wang, Z., Zhang, J., Li, H. et al. An Efficient Component-Separable Inter Layer Interpolation Scheme Applied in Scalable Video Coding. J Math Imaging Vis 36, 304–313 (2010). https://doi.org/10.1007/s10851-009-0187-5

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  • DOI: https://doi.org/10.1007/s10851-009-0187-5

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