Compression of real time volumetric echocardiographic data using modified SPIHT based on the three-dimensional wavelet packet transform

2002 ◽  
Author(s):  
X. Hang ◽  
N.L. Greenberg ◽  
T. Shiota ◽  
M.S. Firstenberg ◽  
J.D. Thomas
Keyword(s):  
Real Time ◽  
Wavelet Packet ◽  
Three Dimensional ◽  
Wavelet Packet Transform

Real-time FPGA implementation of recursive wavelet packet transform

2012 ◽  
Author(s):  
Vanishree Gopalakrishna ◽  
Nasser Kehtarnavaz ◽  
Chandrasekhar Patlolla ◽  
Matthias F. Carlsohn
Keyword(s):  
Real Time ◽  
Wavelet Packet ◽  
Wavelet Packet Transform ◽  
Fpga Implementation

Human Face Fast-3D-Reconstruction from a Single Image

2012 ◽  
Vol 157-158 ◽  
pp. 1008-1011
Author(s):  
Hui Huang Zhao ◽  
Yao Nan Wang ◽  
Ya Qi Sun ◽  
Jian Zhen Chen
Keyword(s):  
Wavelet Transform ◽  
3D Reconstruction ◽  
Wavelet Packet ◽  
Three Dimensional ◽  
Reconstruction Algorithm ◽  
Shape From Shading ◽  
Wavelet Packet Transform ◽  
Reconstruction Method ◽  
Human Face ◽  
Single Image

Human face three-dimensional (3D) reconstruction is a challenging problem. In this paper, we propose a human face fast- 3D- reconstruction method based on image processing with a single image. Shape from shading (SFS) is chosen to reconstruct the human face. First, SFS theory is introduced. It has the advantage of fast 3D reconstruction and only need a single image. Secondly, because the noise will affect the 3D reconstruction result greatly, wavelet transform and wavelet packet transform are introduced and used in image denoising respectively. The experiment has shown that the method based on wavelet transform produces the best denoising result than wavelet packet transform. At last, a human face 3D reconstruction algorithm based on a single image is proposed. The experimental results show that a human face 3D model can be reconstructed in fast by proposed algorithm.

scholarly journals Real-time stall detection of centrifugal fan based on the analysis of symmetrized dot pattern and wavelet packet transform

2017 ◽  
Vol 19 (3) ◽  
pp. 1823-1832 ◽  
Author(s):  
X. G. Xu ◽  
H. X. Liu ◽  
S. L. Wang ◽  
Z. Y. Fan ◽  
L. J. Yang ◽  
...  
Keyword(s):  
Real Time ◽  
Wavelet Packet ◽  
Wavelet Packet Transform ◽  
Centrifugal Fan

scholarly journals A Virtual Instrument for Electrical Power Quality Analysis using Wavelet Technology in Real-time

2014 ◽  
pp. 91-96
Author(s):  
Debasis Tripathy ◽  
Amar Kumar Barik ◽  
B. Srinivas Rao ◽  
Ranjita Rout
Keyword(s):  
Power System ◽  
Real Time ◽  
Power Quality ◽  
Input Signal ◽  
Virtual Instrument ◽  
Wavelet Decomposition ◽  
Wavelet Packet ◽  
Wavelet Packet Transform ◽  
Decomposition Tree ◽  
Power Quality Disturbances

This paper discusses the design of a virtual instrument for detection and analysis of power quality disturbances in Power System using Wavelet Packet Transform with the help of LabVIEW® algorithm. The virtual instrument designed can operate in different working modes depending on the type of power quality disturbances to be detected and analyzed. Different wavelet analysis (discrete or wavelet-packet transform), with different mother wavelet, decomposition tree and different sampling rate is performed on the input signal either in real-time or off-line. The instrument also permits the partial implementation of a wavelet decomposition tree when we are only interested in a specific frequency band in the input signal. The real signals from chroma programming are used in LabVIEW® algorithm by Data Acquisition (DAQ) card to acquire and digitize the input line signal to obtain the results. The results obtained in simulation using real signals demonstrate good performance of the instrument developed for the detection and analysis of different power quality disturbances with proper time information of the signal. This helps us to analyze the power quality problems to improve the supply quality of the power system effectively by taking proper preventive measures

Real-Time Power Measurement Using the Maximal Overlap Discrete Wavelet-Packet Transform

2017 ◽  
Vol 64 (4) ◽  
pp. 3177-3187 ◽  
Author(s):  
Denis Keuton Alves ◽  
Flavio B. Costa ◽  
Ricardo Lucio de Araujo Ribeiro ◽  
Cecilio Martins de Sousa Neto ◽  
Thiago de Oliveira Alves Rocha
Keyword(s):  
Real Time ◽  
Wavelet Packet ◽  
Wavelet Packet Transform ◽  
Power Measurement ◽  
Discrete Wavelet ◽  
Discrete Wavelet Packet Transform
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