Patent ID: 11882274
Assignee: BYTEDANCE INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. The apparatus of claim 8,
wherein the chroma intra prediction mode is derived using cclm_mode_flag, cclm_mode_idx, intra_chroma_pred_mode and lumaIntraPredMode as specified in a following Table 1:, TABLE 1

lumaIntraPredMode

X ( 0 <=

cclm_mode_flag
cclm_mode_idx
intra_chroma_pred_mode
0
50
18
1
X <= 66 )

0
—
0
66
0
0
0
 0

0
—
1
50
66
50
50
50

0
—
2
18
18
66
18
18

0
—
3
1
1
1
66
 1

0
—
4
0
50
18
1
X

1
0
—
81
81
81
81
81

1
1
—
82
82
82
82
82

1
2
—
83
83
83
83
 83;

wherein when a chroma format of the video unit is 4:2:2, chroma intra prediction mode X in Table 1 is mapped to a chroma intra prediction mode Y according to a pre-defined mapping table, and the chroma intra prediction mode X in Table 1 is set equal to the chroma intra prediction mode Y afterwards; and
wherein the default intra prediction mode is not assigned to inter coded blocks.