Numerical methods for decomposition of 2D signals by rotation and wavelet techniques
Segregation of desirable and undesirable components in a signal given by measurements is a broad subject with many applications of huge importance. We focus on the problem that the signal to be detected is superposed by polluting signals which are characterized by a large amplitude and a few dominant directions. Such problems occur for instance in the analysis of seismic signals. We devise numerical algorithms which combine rotation of the given data with one-dimensional and two-dimensional discrete wavelet decomposition techniques respectively. The numerical algorithms are tested on both real and synthetic datasets and are compared with more classical techniques based on Fourier transforms.
|CWI. Probability, Networks and Algorithms [PNA]|
|Organisation||Modelling, Analysis and Computation|
de Zeeuw, P.M, & Zuidwijk, R.A. (2001). Numerical methods for decomposition of 2D signals by rotation and wavelet techniques. CWI. Probability, Networks and Algorithms [PNA]. CWI.