Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Projection based advanced motion model for cubic mapping for 360-degree
  video   This paper proposes a novel advanced motion model to handle the irregular
motion for the cubic map projection of 360-degree video. Since the irregular
motion is mainly caused by the projection from the sphere to the cube map, we
first try to project the pixels in both the current picture and reference
picture from unfolding cube back to the sphere. Then through utilizing the
characteristic that most of the motions in the sphere are uniform, we can
derive the relationship between the motion vectors of various pixels in the
unfold cube. The proposed advanced motion model is implemented in the High
Efficiency Video Coding reference software. Experimental results demonstrate
that quite obvious performance improvement can be achieved for the sequences
with obvious motions.

12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph