December 2002
Intermediate to advanced
454 pages
25h 39m
English
Content preview from Lossless Compression Handbook
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364 PART IV / STANDARDS
Table 18.3 Context Labels for Magnitude Refinement Coding
~-[n]
xsig[n] Icmag[n]
0 0 15
0 >0 16
1 m 17
Note:
A dash denotes "don't care."
magnitudes of the samples that were already significant in previous bit-planes. The magnitude
refinement context label,
Kmag[n],
is selected as described in Table 18.3. In the table, ~[n] denotes
the value of the significance-state variable or[n] delayed by one bit-plane. In other words, similar
to ~r[n], ~-[n] is initialized to zero at the beginning and set to 1 only after the first magnitude
refinement bit of the sample has been coded.
The third and final ...
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