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作者:

Liu, Xien (Liu, Xien.) | Sun, Yanfeng (Sun, Yanfeng.) (学者:孙艳丰) | Hu, Yongli (Hu, Yongli.) (学者:胡永利) | Yin, Baocai (Yin, Baocai.) (学者:尹宝才)

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CPCI-S

摘要:

Recently, techniques based on dictionary learning for sparse representation have demonstrated promising results for depth or disparity maps restoration. However, we show that these methods are not robust due to the fact that depth or disparity maps are not only slightly contaminated by additive Gaussian noise but also seriously corrupted with outliers, occlusions, or even variable uncertainties. These seriously corrupted pixels not only lead to irregular structures obtained by dictionary but also seriously deteriorate the sparse coding effectiveness. To overcome these problems, in this paper we propose a new robust sparse representation framework to restore depth maps. In our proposed framework, seriously corrupted pixels can be automatically identified and their disturbance effects are gradually diminished through a few iterations. Thus, our proposed framework is more robust for depth restoration. Experimental results are presented to demonstrate the effectiveness of the proposed framework.

关键词:

depth restoration dictionary learning robust sparse representation Sparse coding

作者机构:

  • [ 1 ] [Liu, Xien]Beijing Univ Technol, Coll Comp Sci & Technol, Beijing Key Lab Multimedia & Intelligent Software, Beijing, Peoples R China
  • [ 2 ] [Sun, Yanfeng]Beijing Univ Technol, Coll Comp Sci & Technol, Beijing Key Lab Multimedia & Intelligent Software, Beijing, Peoples R China
  • [ 3 ] [Hu, Yongli]Beijing Univ Technol, Coll Comp Sci & Technol, Beijing Key Lab Multimedia & Intelligent Software, Beijing, Peoples R China
  • [ 4 ] [Yin, Baocai]Beijing Univ Technol, Coll Comp Sci & Technol, Beijing Key Lab Multimedia & Intelligent Software, Beijing, Peoples R China

通讯作者信息:

  • [Liu, Xien]Beijing Univ Technol, Coll Comp Sci & Technol, Beijing Key Lab Multimedia & Intelligent Software, Beijing, Peoples R China

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来源 :

ELECTRONIC PROCEEDINGS OF THE 2013 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXPO WORKSHOPS (ICMEW)

ISSN: 2330-7927

年份: 2013

语种: 英文

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