Vol. 2 Issue 2
Year: 2015
Issue:Apr-Jun
Title:Guassian and Speckle Noise Removal From Ultrasound Images Using Bivariate Shrinkage By Dual Tree Complex Wavelet Transform
Author Name:Devanand Bhonsle,Vivek Chandra and G. R. Sinha
Synopsis:
This paper introduces bivariate thresholding based Dual Tree Complex Wavelet Transform (DTCWT) technique to remove both Gaussian and speckle noise signals. Since both types of noises are different in nature hence it is difficult to remove them by using single filter. In this paper DTCWT approach is used to denoise ultrasound images. DTCWT based filter removes Additive White Gaussian Noise (AWGN) effectively. Since speckle noise is multiplicative in nature; it is converted into logarithmic transform before applying wavelet transform. Bivariate shrinkage (soft thresholding) function is used.
Year: 2015
Issue:Apr-Jun
Title:Guassian and Speckle Noise Removal From Ultrasound Images Using Bivariate Shrinkage By Dual Tree Complex Wavelet Transform
Author Name:Devanand Bhonsle,Vivek Chandra and G. R. Sinha
Synopsis:
This paper introduces bivariate thresholding based Dual Tree Complex Wavelet Transform (DTCWT) technique to remove both Gaussian and speckle noise signals. Since both types of noises are different in nature hence it is difficult to remove them by using single filter. In this paper DTCWT approach is used to denoise ultrasound images. DTCWT based filter removes Additive White Gaussian Noise (AWGN) effectively. Since speckle noise is multiplicative in nature; it is converted into logarithmic transform before applying wavelet transform. Bivariate shrinkage (soft thresholding) function is used.
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