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Video Super Resolution Using Non-Local Means with Adaptive Decaying Factor and Searching Window

  • Yawei LiEmail author
  • Xiaofeng Li
  • Cui Yao
  • Zhizhong Fu
  • Xiuxia Yin
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10116)

Abstract

Power consumption, transmission bandwidth, and spatial-temporal resolution tradeoff are among the most important factors that affect video processing on mobile devices. Scalable video coding (SVC) provides a possible solution to overcome these problems. Every video in SVC format consists of high-resolution (HR) frames and low-resolution (LR) frames. For a better viewing experience, super resolution (SR) is introduced to refine the LR frames. Non-local means (NLM) based SR has a promising prospect. Since NLM originates from image denoising, the fixed parameters of NLM is not fit for SR tasks. A fixed decaying factor tends to blur the details in flat regions and a fixed searching window results in mismatches among pixels. Thus, we propose two adaptive parameters to address these problems. We generalize key features that affect SR methods’ applicability of implementation on hardware and show NLM is fit for hardware implementation. The experimental results validate the proposed algorithm.

Keywords

Video Sequence Image Denoising Scalable Video Code Decay Factor Super Resolution 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgement

This work was supported by the Natural Science Foundation of China (61671126).

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Yawei Li
    • 1
    Email author
  • Xiaofeng Li
    • 1
  • Cui Yao
    • 1
  • Zhizhong Fu
    • 1
  • Xiuxia Yin
    • 1
  1. 1.University of Electronic Science and Technology of ChinaChengduChina

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