Abstract
In this study, a symmetrical directional complex discrete wavelet packet transform, which can be applied directly to the quadrature format signals and has the ability of mapping directional information during decomposition stage, is proposed. With the proposed symmetrical directional complex wavelet packet transform, traditional symmetrical phasing filter technique, which is used for quadrature signal to directional signal conversion, is eliminated and the computational complexity of whole process is reduced. The performance of proposed method is examined in detail using real quadrature embolic signals.
Keywords
Wavelet packet decomposition
Computer science
Wavelet
Wavelet transform
Discrete wavelet transform
Harmonic wavelet transform
Second-generation wavelet transform
Algorithm
Stationary wavelet transform
Complex wavelet transform
Quadrature mirror filter
Network packet
Mathematics
Filter (signal processing)
Artificial intelligence
Computer vision
Prototype filter
Filter design
Subject Areas
Image and Signal Denoising Methods
·Computer Vision and Pattern Recognition ·Physical Sciences
Blind Source Separation Techniques
·Signal Processing ·Physical Sciences
Machine Fault Diagnosis Techniques
·Control and Systems Engineering ·Physical Sciences
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