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Advances in Visual Data Compression and Communication
book

Advances in Visual Data Compression and Communication

by Feng Wu
July 2014
Intermediate to advanced content levelIntermediate to advanced
513 pages
16h 40m
English
Auerbach Publications
Content preview from Advances in Visual Data Compression and Communication
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7.4 Experimental Results and Observations 145
related to its neighboring blocks of lifting angles α
n
, α
w
, and α
d
, we predict the
optimal lifting direction ϑ to be
ˆ
ϑ =
α
w
| α
d
α
w
|>| α
d
α
n
|
α
n
| α
d
α
w
|≤| α
d
α
n
|
. (7.17)
Then, the prediction error e
ϑ
= ϑ
ˆ
ϑ is arithmetic coded. The coded segment struc-
ture and predicted angle error are embedded in the user data part of JPEG 2000.
If v S is an internal node, then r
T
(v) = 1, that is, the bit to indicate the event
of splitting the corresponding block; otherwise, for each leaf node τ S,r
T
(τ) is the
number of bits to code the coefficients h
τ,ϑ
(m,n) in node τ and the optimal direction
ϑ of the ADL, plus one bit to signal the terminal node. The rate of coding is estimated
by the entropy of ADL coefficients ...
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Publisher Resources

ISBN: 9781482234138