Sparse Approximate Multifrontal Factorization with Butterfly Compression for High-Frequency Wave Equations.
Yang LiuPieter GhyselsLisa ClausXiaoye Sherry LiPublished in: SIAM J. Sci. Comput. (2021)
Keyphrases
- high frequency
- low frequency
- visual quality
- high resolution
- image compression
- wavelet transform
- subband
- wave equation
- wavelet filters
- low pass
- wavelet coefficients
- discrete wavelet transform
- compression algorithm
- wavelet decomposition
- wavelet domain
- sparse representation
- high frequencies
- blocking artifacts
- low bit rate coding
- singular value decomposition
- data compression
- image coding
- image reconstruction
- multi resolution analysis
- denoising
- motion estimation
- computer vision