Information Technology Reference
In-Depth Information
Channel (C)
Channel
number (
i
)
4
3
6
2
10
11
9
8
12
16
17
ω
15
18
24
23
22
21
14
20
1
13
7
19
30
29
28
27
26
25
0
Figure 11.1
Frequency layout. (From ISO/IEC TR 15938-8:2002 Information technology.)
where
DTDTDmDTD
(
,
,
φ
)
=
(
|
,
TD
abase
),
(11.12)
query
database
query
m
φ
dat
and φ = 30°.
•
Scale-Invariant Matching
The query image is scaled with
N
different zooming factors,
TD
query
|
n
,
and the similarity is computed as the minimum among all scaled
versions as
DTD
(
,
D
)min{(
=
D TD
,
TD
, |
nn
= 0
,, ,
…
N
(11.13)
query
database
query
datab
ase
where
DTDTDn
(
,
,)
=
DTDTD
n
(
| ,
ase
).
(11.14)
query
database
query
datab
This matching method is a good example of invariant matching for variant
features.
11.2.2.2 Texture Browsing Descriptor (TBD)
This descriptor specifies the perceptual characterization of a texture,
which is similar to a human characterization, in terms of regularity,
