Enhanced estimation of power spectral density of noise using the wavelet transform.
Petr SyselZdenek SmékalPublished in: PWC (2007)
Keyphrases
- wavelet transform
- power spectral density
- subband
- power spectrum
- low frequency
- frequency band
- spectral analysis
- high frequency
- multiscale
- image coding
- image compression
- fourier transform
- multiresolution
- filter bank
- wavelet coefficients
- natural images
- frequency domain
- noisy data
- signal to noise ratio
- prediction error
- noise level
- feature extraction
- wavelet decomposition
- feature space
- optimal filter