discrete wavelet packet transform pdf
Tài liệu Multimedia Applications of the Wavelet Transform pdf
Ngày tải lên :
19/01/2014, 19:20
... lost and the wavelet
transform is reversible. This leads to the fast wavelet transform.
1.4 Time–Frequency Resolution
In the previous sections we have mentioned that the wavelet transform decomposes ... the wavelet theory: We discuss the time–frequency resolution
of the wavelet transform and compare it to the common short–time Fourier transform. The multiscale
property of the dyadic wavelet transform ... to
Transforms
Fourier transform of :
Wavelet transform of with respect to :
Approximation of at the scale
Detail of at the scale
Misc
DCT Discrete cosine transform
WT Wavelet transform
Hz Hertz, i.e, quantity...
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DISCRETE WAVELET TRANSFORMS - A COMPENDIUM OF NEW APPROACHES AND RECENT APPLICATIONS pdf
Ngày tải lên :
23/03/2014, 03:20
... Optical
Communication Systems Using Discrete Wavelet
Transformation 207
Nader Namazi, Ray Burris, G. Charmaine Gilbreath, Michele Suite
and Kenneth Grant
ContentsVI
Discrete Wavelet Transforms - A Compendium ... orders@intechopen.com
Discrete Wavelet Transforms - A Compendium of New Approaches and Recent Applications, Edited by
Awad Kh. Al - Asmari
p. cm.
ISBN 978-953-51-0940-2
DISCRETE WAVELET
TRANSFORMS - ... Dimensional Discrete Wavelet Transform
for Image Signals 3
Masahiro Iwahashi and Hitoshi Kiya
Chapter 2 A Pyramid-Based Watermarking Technique for Digital Images
Copyright Protection Using Discrete Wavelet...
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Báo cáo hóa học: " Research Article Development and Evaluation of High-Performance Decorrelation Algorithms for the Nonalternating 3D Wavelet Transform" pdf
Ngày tải lên :
22/06/2014, 19:20
... the 3D wavelet transform, Kutil and Uhl have
conducted a study of the software and hardware needs of the
3D wavelet transform [14]. They have centered their study on
the classic wavelet transform ... processing tasks, and
especially for image and video compression [1, 5].
2.1. Wavelet analysis and the 3D wavelet transform
Wavelet analysis procedures involve the decomposition of a
signal into scaled ... efforts have been reported
lately for the wavelet transform. Thulasiraman et al. have de-
veloped a multithreaded algorithm for computing the 2D
wavelet transform [13]. The authors conduct a set...
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Laplace Transform.pdf
Ngày tải lên :
24/08/2012, 21:55
... Input
First-Order Response
First-Order Response with
Lag
First-Order Response with
Lag plus Dead Time
LAPLACE
TRANSFORM
F
(
s
)
1
s
A
s
Ae
−
t
d
s
A
s
+
a
A
τ
s
+ 1
A
1
A
2
s
+
a
e
−
t
d
s
A
1
A
2
τ
s
+ 1
e
−
t
d
s
TIME
FUNCTION
f
(
t
)
u
(
t
)
A
(
t
)
A
(
t
−
t
d
)
Ae
−
at
A
τ
e
−
t
τ
AAe ... 1
t
≥
t
0
A
(
t
−
t
d
) = 0
t
<
t
d
A
(
t
−
t
d
) =
At
≥
t
d
t
0
1
t
0
A
t
0
t
d
A
Table 14-2. Laplace transforms.
PROCESS
RESPONSE
A
A
2
01 2
t
τ =1
τ
=2
A
1
A
2
0
t
d
t
d
+1
t
A
1
A
2
0
t
t
d
t
d
+1
A
1
A
2
2
...
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Tài liệu Luận văn:Nghiên cứu ứng dụng wavelet packet trong chẩn đoán hư hỏng truyền động bánh răng pptx
Ngày tải lên :
26/02/2014, 20:20
... Wavelet Morlet.
a) Biến ñổi Wavelet Haar
b) Biến ñổi Wavelet Meyer
c) Biến ñổi Wavelet Daubechies
d) Biến ñổi Wavelet Morlet
2.3. Phép biến ñổi wavelet packet
10
Phép biến ñổi wavelet ...
Fourier Transform: Phân tích tín hiệu dao ñộng bằng phương pháp FFT
và phương pháp STFT - Wavelet and Wavelet Packet: Phân tích tín hiệu
dao ñộng bằng phép biến ñổi wavelet và wavelet packet. ... trực chuẩn wavelet:
-i/2 -i
,
(t) 2 . (2 t j)
i j
ψ ψ
= −
2.2.2.3. Giới thiệu một số họ wavelet
Các dạng của hàm ψ(t) ñược sử dụng: Hàm Wavelet Haar, hàm
Wavelet Meyer, hàm Wavelet Daubechies,...
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The Race to Transform pdf
Ngày tải lên :
06/03/2014, 03:20
... to transform: sport in post-apartheid south africa
(Transformation 2 – reformative), and those eorts aimed at developing mass
participation in swimming (Transformation 1 – transformative).
Transformation ...
Proponents of Transformation 1 have argued that the state could have
played a much more useful role by prioritising redress in its approach to
transformation, i.e. understanding transformation ... www.hsrcpress.ac.za
42 the race to transform: sport in post-apartheid south africa
The organisational factors impeding transformation are several. The
human resource demands for transformation are substantial,...
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Báo cáo hóa học: " Moving Target Indication via Three-Antenna SAR with Simplified Fractional Fourier Transform" pdf
Ngày tải lên :
20/06/2014, 22:20
... whole paper.
2 Simplified Fractional Fourier Transform (FrFT)
The FrFT is a generalizatio n of regular Fourier trans-
form in that the Fourier transform transforms a signal
from time-domain to frequency-domain, ... fractional Fourier transform and time-frequency
representations. IEEE Transactions on Signal Processing 42
(10), 3084–3091
(1992)
21. SC Pei, JJ Ding, Simplified fractional Fourier transform. J Opt ... μ)dt,
(2)
x(t)=
∞
−∞
χ
α
(μ)K
−α
(t , μ)du.
(3)
Given that F is the Fourier transform operator and
F
α
r
is the fractional Fourier transform operator, then the
FrFT possesses the following important...
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Báo cáo hóa học: " Research Article Rate and Power Allocation for Discrete-Rate Link Adaptation" pdf
Ngày tải lên :
22/06/2014, 00:20
... S)γ
T
n,1
= κ
n
. The optimal discrete- power
adaptation is discretized piecewise channel inversion, closely
related to the discrete- power scheme in [17].
Lemma 2. The optimal discrete- power adaptation ... step sizes on the
order of 1 dB are proposed [29]. We thus extend the MASA
analysis by considering discrete- power adaptation. Specifi-
cally, we introduce the MASA
NìK
scheme where we allow
for K
... adaptive power pol-
icy and the corresponding spectral efficiencies are presented
in Section 4.
3.2. Discrete- power transmission scheme
For practical scenarios, the resolution of power control will
be...
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Báo cáo hóa học: "Review Article Building Local Features from Pattern-Based Approximations of Patches: Discussion on Moments and Hough Transform" pdf
Ngày tải lên :
22/06/2014, 01:20
... have been accurately found based on Hough
transform.
r
β
d
α
Figure 10: A pattern with four configurations parameters. A 4D
parameter space used for Hough transform- based approximation
building can ... accurate
approximations (e.g., built using Hough transform) may not
be recognized as such.
An entirely different similarity measure can be proposed
if Hough transform is used for building pattern-based
approximations. ... windows (both indirect approaches, moment
similarities, similarities based on Hough transform,
and direct methods, Radon transform and image
correlation, are briefly overviewed in Section 3);
(3) definition,...
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The Discrete Fourier Transform
Ngày tải lên :
13/09/2012, 09:49
... term: transform, is extensively used in Digital Signal
Processing, such as: Fourier transform, Laplace transform, Z transform,
Hilbert transform, Discrete Cosine transform, etc. Just what is a transform?
To ... decomposed.
Chapter 8- The Discrete Fourier Transform 145
Type of Transform Example Signal
Fourier Transform
Fourier Series
Discrete Time Fourier Transform
Discrete Fourier Transform
signals that ... themselves in a periodic fashion. This type of
Fourier transform is called the Discrete Time Fourier Transform.
Periodic -Discrete
These are discrete signals that repeat themselves in a periodic...
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