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Author:

Xu, Wei (Xu, Wei.) | Wang, Jin (Wang, Jin.) | Sun, Longhua (Sun, Longhua.) | Zhu, Qing (Zhu, Qing.)

Indexed by:

CPCI-S EI Scopus

Abstract:

Depth maps acquired by 3D cameras usually suffer from low resolution and insufficient quality, which makes it difficult to be directly used in visual depth perception and 3D reconstruction. To handle this problem, we propose a novel multi-direction dictionary and joint regularization model for high quality depth recovery. To enhance the sparsity, image is divided into classified patches according to the same geometrical direction and a compact dictionary is trained within each class. Then for a patch to be coded, the most relevant dictionary can be selected according to its geometrical direction. We further introduce two regularization terms into the reconstruction model. One is the anisotropic total variation (TV) defined by the local gradients of color/depth pair. The other is the nonlocal similarity to provide nonlocal constraint to the local structure. Experimental results demonstrate that our method outperforms other state-of-the-art methods in terms of both subjective quality and objective quality.

Keyword:

regularization super-resolution (SR) dictionary training sparse representation Depth map

Author Community:

  • [ 1 ] [Xu, Wei]Beijing Univ Technol, Fac Informat Technol, Beijing, Peoples R China
  • [ 2 ] [Wang, Jin]Beijing Univ Technol, Fac Informat Technol, Beijing, Peoples R China
  • [ 3 ] [Sun, Longhua]Beijing Univ Technol, Fac Informat Technol, Beijing, Peoples R China
  • [ 4 ] [Zhu, Qing]Beijing Univ Technol, Fac Informat Technol, Beijing, Peoples R China

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Source :

2021 IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING (ICIP)

ISSN: 1522-4880

Year: 2021

Page: 1839-1843

Cited Count:

WoS CC Cited Count: 1

SCOPUS Cited Count: 2

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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