An Error Concealment Algorithm for Stereoscopic Images Based on Local Reliable Disparities

TANG Gui-jin; ZHU Xiu-chang; LIU Tian-liang

doi:10.3969/j.issn.0372-2112.2013.04.026

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An Error Concealment Algorithm for Stereoscopic Images Based on Local Reliable Disparities

更新时间：2025-07-16

- An Error Concealment Algorithm for Stereoscopic Images Based on Local Reliable Disparities
- Acta Electronica Sinica Vol. 41, Issue 4, Pages: 781-786(2013)
- 作者机构：
  
  南京邮电大学江苏省图像处理与图像通信重点实验室,江苏,南京,210003
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China (No.61071091);Youth Fund of National Natural Science Foundation of China (No.61001152);Graduate Research Innovation Program of univerities in Jiangsu Province (No.CX10B_188Z);Research Foundation of Nanjing University of Posts and Telecommunications (No.NY210069)
- DOI：10.3969/j.issn.0372-2112.2013.04.026
  CLC： TN911.73
- Published：2013
- 稿件说明：
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TANG Gui-jin, ZHU Xiu-chang, LIU Tian-liang. An Error Concealment Algorithm for Stereoscopic Images Based on Local Reliable Disparities[J]. Acta Electronica Sinica, 2013, 41(4): 781-786.
DOI：

TANG Gui-jin, ZHU Xiu-chang, LIU Tian-liang. An Error Concealment Algorithm for Stereoscopic Images Based on Local Reliable Disparities[J]. Acta Electronica Sinica, 2013, 41(4): 781-786. DOI： 10.3969/j.issn.0372-2112.2013.04.026.

摘要

为解决立体图像传输的差错问题

提出了一种基于局部可信视差的掩盖方法。首先

考虑到存在丢失块

并结合像素间色彩空间相似程度和几何空间距离接近程度等因素

设计了基准点偏置的窗口用于自适应权重的视差匹配;然后根据视差连续性原则和左右一致性约束

得出局部的可信视差;最后采用"胜者为王"(Winner-Takes-All)策略估计丢失块的视差

并根据此视差提取相应块来进行误码掩盖.实验结果表明

与其他掩盖算法相比

该算法在计算复杂度相当的情况下

无论在重建图像的PSNR还是主观质量上均具有较好的效果.

Abstract

In order to minimize the transmission errors for stereoscopic images

we propose an error concealment algorithm based on local reliable disparities.First

taking the block loss and the factors of color similarity and geometric distance proximity into account

we design a base-point-biased window to conduct the adaptive weight disparity matching.Second

local reliable disparities are calculated according to the disparity constancy and left-right consistency.Finally

the Winner-Takes-All (WTA) strategy is adopted to estimate the disparity of lost block which will be used to get the data of corresponding block for error concealment.Experimental results show that compared with other algorithms

the proposed method can produce better PSNR and subjective quality of reconstructed image while the computational complexity is almost the same.

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