Graphics Reference
In-Depth Information
a
0 = diagonal
1 = horizontal
2 = vertical
b
diagonal
Fig. 8.20
Subblock scans. Scan for 4
4 TB shown in Fig.
8.16
.(
a
) Subblock scan for 8
8TB.
(
b
) Subblock scan for 16
16 TB. Scan for 32
32 TB is also all diagonal
Tabl e 8. 11
Context selection of
sig_coeff_flag
based on component, TB size, scan order
(Table
8.8
), position of subblock within the TB (Fig.
8.15
), and position based context index within
4
4 TB or subblock (SubIdx) (Fig.
8.12
or
8.19
,resp.)
