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Table 3 Horizontal and vertical candidate modes for each level

From: Fast intra algorithm based on texture characteristics for 360 videos

 

First level mode set C1

Second level mode set C2

Third level mode set C3

Horizontal mode

2–18

2, 6, 10, 14, 18

C2−2, C2−1, C2+1, C2+2

Vertical mode

18–34

18, 22, 26, 30, 34

C2−2, C2−1, C2+1, C2+2