background image
ISO/IEC 10918-1 : 1993(E)
J.2
Hierarchical decoding
J.2.1
Hierarchical control procedure for decoding an image
The control structure for decoding an image using the hierarchical mode is given in Figure J.3.
TISO1720-93/d110
Decode_image
Error
Interpret markers
Done
Decode_frame
Non-Hierarchical mode
No
Yes
Yes
No
Yes
Yes
No
No
[Upsample reference components]
Decode_differential_frame
Reconstruct_components
SOI marker
?
EOI marker
?
Hierarchical
?
Differential frame
?
Figure J.3 ­ Hierarchical control procedure for decoding an image
Figure J.3 [D110] = 18 cm = 704 %
CCITT Rec. T.81 (1992 E)
141
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