Improvement of ultrasound image based on wavelet transform: speckle reduction and edge enhancement.
Yong Sun KimJong Beom RaPublished in: Medical Imaging: Image Processing (2005)
Keyphrases
- speckle reduction
- edge enhancement
- anisotropic diffusion
- wavelet transform
- noise reduction
- speckle noise
- ultrasound images
- median filter
- edge preserving
- partial differential equations
- edge detection
- multiresolution
- multiscale
- image compression
- subband
- fourier analysis
- signal to noise ratio
- wavelet coefficients
- high pass
- high frequency
- wavelet decomposition
- image enhancement
- low frequency
- noise level
- carotid artery
- feature extraction
- region growing
- frequency domain