MPEG G-PCC 국제표준 기술

  • Published : 2021.04.30

Abstract

본 고는 ISO/IEC JTC 1/SC 29/WG 7 MPEG(Moving Picture Experts Group) 3DG(3D Graphics coding) 그룹에서 진행되고 있는 포인트 클라우드 데이터 압축 표준 기술 중 하나인 G-PCC(Geometry-based Point Cloud Compression) 표준에 대하여 설명하고자 한다. G-PCC는 포인트 클라우드의 기하 정보와 속성 정보를 3차원 공간에서 서로 다른 기술을 이용하여 압축하는 표준으로, 무손실 압축 방법의 경우 10:1의 압축율을 제공하고 손실 압축의 경우 35:1 정도의 압축율을 보인다. 본 고에서는 G-PCC의 기하 정보와 속성 정보의 압축 방법을 상세히 설명하고 같은 기능을 수행하는 압축 기술 간의 성능을 비교하고자 한다.

Keywords

References

  1. C. Cao, M. Preda, and T. Zaharia, "3D Point Cloud Compression: A Survey," Web3D '19: The 24th International Conference on 3D Web Technology, Los Angeles, CA, 1- 9 Jul. 2019
  2. MPEG 3DG, "Call for proposals for point cloud compression v2," ISO/IEC JTC1/SC29/WG11 N16763, Hobart, AU, Apr. 2017
  3. C. Tulvan, R. Mekuria, Z. Li, and S. Laserre, "Use Cases for Point Cloud Compression," ISO/IEC JTC1/SC29/WG11 N16331, Geneva, CH, Jun. 2016
  4. MPEG 3DG, "Common Test Conditions for PCC," ISO/IEC JTC1/SC29/WG11 N18474, Geneva, CH, Mar. 2019
  5. MPEG 3DG, "G-PCC Test Model v12," ISO/IEC JTC1/SC 29/WG 7 N00005, Online, Oct. 2020
  6. D. Meagher, "Geometric modeling using octree encoding," Computer Graphics and Image Processing, vol. 19, no. 2, pp. 129-147, Jun. 1982 https://doi.org/10.1016/0146-664x(82)90104-6
  7. Z. Gao, D. Flynn, A. Tourapis, and K. Mammou, "[G-PCC][New proposal] Predictive Geometry Coding," ISO/IEC JTC1/SC29 WG11 m51012, Geneva, CH, Oct. 2019
  8. K. Mammou, A. Tourapis, J. Kim, F. Robinet, V. Valentin, Y. Su, "Proposal for improved lossy compression in TMC1," ISO/IEC JTC1/SC29/WG11 m42640, San Diego, US, Apr. 2018
  9. G. P. Sandri, P. A. Chou, M. Krivokuca, R.L. de Queiroz, "Integer alternative for the region-adaptive hierarchical transform," IEEE Signal Processing Letters, vol. 26, no. 9, pp. 1369 -1372, Jul. 2019 https://doi.org/10.1109/lsp.2019.2931425
  10. S. Lasserre, S. Flynn, "[GPCC][new input] Planar mode in octree-based geometry coding," ISO/IEC JTC1/SC29/WG11 m48906, Gothenburg, SE, Jul. 2019
  11. S. Lasserre, J. Taquet, "[GPCC] [CE 13.22] related] An improvement of the planar coding mode," ISO/IEC JTC1/SC29/WG11 m50642, Geneva, CH, Oct. 2019
  12. S. Lasserre, J. Taquet, "[GPCC] [CE13.22 related] The azimuthal coding mode," ISO/IEC JTC1/SC29/WG11 m51596, Brussels, BE. Jan. 2020
  13. S. Lasserre, D. Flynn, "[PCC] Inference of a mode using point location direct coding in TMC3," ISO/IEC JTC1/SC29/WG11 m42239, Gwangju, KR, Jan. 2018
  14. A. Vosoughi, S. Yea, S. Wenger, S. Liu, "[G-PCC][New proposal] Improved color transfer," ISO/IEC JTC1/SC29/WG11 m49407, Gothenburg, SE, Jul. 2019
  15. Hyun-Mook Oh, Sejin Oh, "[G-PCC] [EE13.43] Report on coordinate conversion," ISO/IEC JTC1/SC29/WG11 input document m54622, Online, Jul. 2020
  16. T. Sugio, "[G-PCC] Attribute residual coding in TMC13," ISO/IEC JTC1/SC29 WG11 m46108, Marrakech, MA, Jan. 2019
  17. C. D. Han, "[G-PCC] CE13.19 Report on Attribute Layer Quantization Control," ISO/IEC JTC1/SC29/WG11 m47834, Gothenburg, SE, Jul. 2019
  18. D. Flynn, S. Lasserre, "Report on up-sampled transform domain prediction in RAHT," ISO/IEC JTC1/SC29/WG11 m49380, Gothenburg, SE, Jul. 2019
  19. G. Bjontegaard, "Calculation of Average PSNR Differences Between RD Curves," document VCEG-M33, ITU-T SG 16/Q 6, Austin, TX, 2001