TIFF 6.0 Specification
Final—June 3, 1992
This Field points to a list of offsets to the Huffman AC tables, one per component.
The format of each table is as follows:
16 BYTES of “BITS”, indicating the number of codes of lengths 1 to 16;
Up to 256 BYTES of “VALUES”, indicating the values associated with
those codes, in order of length.
See the JPEG Draft International Standard (ISO DIS 10918-1) for more details.
It is strongly recommended that, within the TIFF file, each component be assigned
separate tables. This Field is mandatory whenever the JPEGProc Field specifies a
DCT-based process (no default).
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