3D Point Cloud Attribute Compression Using Geometry-Guided Sparse Representation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

4 Scopus Citations
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Author(s)

  • Shuai Gu
  • Junhui Hou
  • Huanqiang Zeng
  • Hui Yuan
  • Kai-Kuang Ma

Detail(s)

Original languageEnglish
Article number8816692
Pages (from-to)796-808
Number of pages13
Journal / PublicationIEEE Transactions on Image Processing
Volume29
Online published27 Aug 2019
Publication statusPublished - 2020

Abstract

3D point clouds associated with attributes are considered as a promising paradigm for immersive communication. However, the corresponding compression schemes for this media are still in the infant stage. Moreover, in contrast to conventional image/video compression, it is a more challenging task to compress 3D point cloud data, arising from the irregular structure. In this paper, we propose a novel and effective compression scheme for the attributes of voxelized 3D point clouds. In the first stage, an input voxelized 3D point cloud is divided into blocks of equal size. Then, to deal with the irregular structure of 3D point clouds, a geometry-guided sparse representation (GSR) is proposed to eliminate the redundancy within each block, which is formulated as an ℓ0-norm regularized optimization problem. Also, an inter-block prediction scheme is applied to remove the redundancy between blocks. Finally, by quantitatively analyzing the characteristics of the resulting transform coefficients by GSR, an effective entropy coding strategy that is tailored to our GSR is developed to generate the bitstream. Experimental results over various benchmark datasets show that the proposed compression scheme is able to achieve better rate-distortion performance and visual quality, compared with state-of-the-art methods.

Research Area(s)

  • 3D point cloud, sparse representation, irregular structure, predictive coding, entropy coding

Citation Format(s)

3D Point Cloud Attribute Compression Using Geometry-Guided Sparse Representation. / Gu, Shuai; Hou, Junhui; Zeng, Huanqiang; Yuan, Hui; Ma, Kai-Kuang.

In: IEEE Transactions on Image Processing, Vol. 29, 8816692, 2020, p. 796-808.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal