A Novel Error Concealment Algorithm Based on Lagrange Interpolation in Two Fields

ZHANG Jian-long; WU Cheng-ke; GAO Xin-bo

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A Novel Error Concealment Algorithm Based on Lagrange Interpolation in Two Fields

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- A Novel Error Concealment Algorithm Based on Lagrange Interpolation in Two Fields
- Acta Electronica Sinica Vol. 35, Issue 4, Pages: 653-658(2007)
- 作者机构：
  
  1. 西安电子科技大学电子工程学院,陕西,西安,710071
  2. 西安电子科技大学ISN国家重点实验室,陕西,西安,710071
  3. 西安电子科技大学电子工程学院陕西西安,710071
  4. 西安电子科技大学ISN国家重点实验室陕西西安,710071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN94
- Published：2007
- 稿件说明：
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ZHANG Jian-long, WU Cheng-ke, GAO Xin-bo. A Novel Error Concealment Algorithm Based on Lagrange Interpolation in Two Fields[J]. Acta Electronica Sinica, 2007, 35(4): 653-658.
DOI：

ZHANG Jian-long, WU Cheng-ke, GAO Xin-bo. A Novel Error Concealment Algorithm Based on Lagrange Interpolation in Two Fields[J]. Acta Electronica Sinica, 2007, 35(4): 653-658. DOI：

摘要

本文提出了一种基于双域拉格朗日插值的错误隐藏方法

编码采用H.264标准

分别在时域和空域进行插值获得两个运动矢量

通过建立插值系数表构造混合的插值模型

经过边缘匹配算法判断后获得最优的运动矢量作为丢失宏块的运动矢量.为了减小网络突发错误对插值效果的影响

本文在编码端提出了一种类交织的slice划分方法

实验证明本文方法由于充分利用了时域和空域的信息冗余

取得了较好效果

在15％网络丢包率的环境下平均PSNR比空域拉格朗日插值方法高0.5dB~1dB左右.

Abstract

An error concealment algorithm based on lagrange interpolation in spatial field and temporal field for H.264 video was presented.Two motion vectors were obtained by interpolating in spatial and temporal field respectively.A hybrid interpolation model was constructed to get the optimal motion vector of lost motion vector by setting up a table for interpolation coefficients and judging with boundary match algorithm.Furthermore

a novel like-interlace method for slices was presented in order to reduce the bad effect of burst error in channel to the interpolation.Simulation results show that this scheme can highly improve the quality of reconstructed video and obtain a gain of about 0.5dB~1dB in PSNR

compared with lagrange interpolation in spatial field in the condition of packet loss rate with 15%.

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