Raw Plenoptic Video Coding Under Hexagonal Lattice Resolution of Motion Vectors

Thuc Nguyen Huu; Vinh Van Duong; Jonghoon Yim; Byeungwoo Jeon

ICASSP 2022accepted0 citations

Raw Plenoptic Video Coding Under Hexagonal Lattice Resolution of Motion Vectors

Thuc Nguyen Huu, Vinh Van Duong, Jonghoon Yim, Byeungwoo Jeon

Abstract

In raw plenoptic video, the optimal motion searching points mostly follow the hexagonal structure of micro-images. Based on this understanding, we propose a new motion vector resolution, namely the hexagonal lattice (HL) resolution which reflects micro-image structure. The HL resolution can be efficiently represented by HL basis. A study in this paper shows that motion vectors are highly concentrated at hexagonal lattice points, leading to use of the proposed resolution in the context of video compression. In this regard, we demonstrate the compression benefit brought by estimating motion vectors at HL resolution in the VVC codec.

BibTeX

@inproceedings{icassp2022_rawplenopticvide,
  title = {Raw Plenoptic Video Coding Under Hexagonal Lattice Resolution of Motion Vectors},
  author = {Thuc Nguyen Huu and Vinh Van Duong and Jonghoon Yim and Byeungwoo Jeon},
  booktitle = {ICASSP 2022},
  year = {2022}
}