Approximation of the high-frequency Helmholtz kernel by nested directional interpolation: error analysis.
Steffen BörmJens Markus MelenkPublished in: Numerische Mathematik (2017)
Keyphrases
- high frequency
- error analysis
- low frequency
- contourlet transform
- error estimates
- high resolution
- wavelet transform
- least squares
- subband
- high pass
- visual quality
- discrete wavelet transform
- color filter array
- high frequency components
- high frequencies
- error correction
- wavelet decomposition
- low pass
- support vector
- wavelet domain
- wavelet coefficients
- computer vision
- blocking artifacts
- dual tree
- multi resolution analysis
- single image
- low spatial resolution
- low and high frequency
- low bit rate coding