Phase-preserving speckle reduction based on soft thresholding in quaternion wavelet domain.
Yipeng LiuJing JinQiang WangYi ShenPublished in: J. Electronic Imaging (2012)
Keyphrases
- wavelet domain
- soft thresholding
- speckle noise
- speckle reduction
- denoising
- sar images
- spatial domain
- image denoising
- wavelet coefficients
- wavelet transform
- discrete wavelet transform
- multiscale
- multiresolution
- shift invariant
- ultrasound images
- high frequency
- subband
- synthetic aperture radar
- human visual system
- anisotropic diffusion
- noisy images
- frequency domain
- additive noise
- total variation
- denoising algorithm
- median filter
- noise reduction
- low level
- image analysis