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Specification of hierarchical-model-based fast quarter-pixel motion estimation

机译：基于分层模型的快速四分之一像素运动估计的规范

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摘要

We propose a robust and fast quarter-pixel motion estimation algorithm. This algorithm is an advanced version of the previously proposed model-based quarter-pixel motion estimation (MBQME). MBQME has many advantages in computational complexity, running speed, and hardware implementations. But it has the problem that it does not find the quarter-pixel positions that locate beyond the half-pixel positions. That is one of limitations of model-based motion estimation methods, and it leads to both peak-SNR degradation and bit-rate increase. To solve this problem, we propose a hierarchical mathematical model with minimum interpolations. Through this model, we can determine a motion vector at every quarter-pixel point, which is perfectly compatible with the quarter-pixel motion estimation method within international video coding standards such as MPEG-4 and H.264/AVC. The simulation results show that the proposed method yields almost the same or even better peak-SNR performance than that of full-search quarter-pixel motion estimation, with much lower computational complexity.
机译：我们提出了一种鲁棒且快速的四分之一像素运动估计算法。该算法是先前提出的基于模型的四分之一像素运动估计（MBQME）的高级版本。 MBQME在计算复杂性，运行速度和硬件实现方面具有许多优势。但是它具有一个问题，即找不到四分之一像素位置位于半像素位置之外。这是基于模型的运动估计方法的局限性之一，并且导致峰值SNR下降和比特率增加。为了解决这个问题，我们提出了一个最小插值的分层数学模型。通过此模型，我们可以确定每个四分之一像素点的运动矢量，这与MPEG-4和H.264 / AVC等国际视频编码标准中的四分之一像素运动估计方法完全兼容。仿真结果表明，与全搜索四分之一像素运动估计相比，该方法产生的峰值SNR性能几乎相同甚至更好，并且计算复杂度低得多。

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  • 来源
    《Optical engineering》 |2010年第6期|p.067003.1-067003.7|共7页
  • 作者

    Junsang Cho; Jung W. Sun; Gwanggil Jeon; Jechang Jeong;

  • 作者单位

    Hanyang University Department of Electronics and Computer Engineering 17 Haengdang-dong, Seongdong-gu Seoul 133-791, Korea;

    rnUniversity of Pennsylvania Department of Radiology 3600 Market Street Philadelphia, Pennsylvania 19014;

    rnUniversity of Ottawa School of Information Technology and Engineering 800 King Edward P.O. Box 450, Stn A Ottawa, Ontario, K1N 6N5 Canada;

    rnHanyang University Department of Electronics and Computer Engineering 17 Haengdang-dong, Seongdong-gu Seoul 133-791, Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    motion estimation; subpixel; MPEG-4; minimum interpolation;

    机译：运动估计;亚像素MPEG-4;最小插值;

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