A parallel sweeping preconditioner for high frequency heterogeneous 3D Helmholtz equations
Jack PoulsonBjörn EngquistSergey FomelSiwei LiLexing YingPublished in: CoRR (2012)
Keyphrases
- high frequency
- low frequency
- visual quality
- wavelet transform
- wavelet coefficients
- subband
- high frequency components
- high resolution
- discrete wavelet transform
- low pass
- linear systems
- wavelet domain
- frequency domain
- wavelet decomposition
- multiresolution
- multi resolution analysis
- high frequencies
- frequency band
- blocking artifacts
- low and high frequency
- image restoration
- post processing
- subband decomposition