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RAW PLENOPTIC VIDEO CODING UNDER HEXAGONAL LATTICE RESOLUTION OF MOTION VECTORS

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

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    Length: 00:10:12
08 May 2022

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.

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