Keyphrases
- filter design
- bandpass
- low snr
- low pass
- frequency domain
- high frequency
- subband
- nonlinear filters
- noise model
- filter bank
- low frequency
- low signal to noise ratio
- discrete wavelet transform
- wavelet decomposition
- image restoration
- contrast enhancement
- image enhancement
- image fusion
- frequency band
- edge information
- gray scale
- multiresolution
- multiscale
- spatial domain
- low pass filter
- denoising
- wavelet transform