An ultrasound image despeckling method using independent component analysis
This paper tackles the problem of reducing the speckle noise in the ultrasound B-Scan image while preserving the structure of boundaries and lesions. Our contribution is two fold. (1) We demonstrate for the first time that ICA Sparse Code Shrinkage (ICA-SCS) denoising algorithm can be applied to the...
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Published in | 2009 IEEE International Symposium on Biomedical Imaging: From Nano to Macro pp. 658 - 661 |
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Main Authors | , , , , |
Format | Conference Proceeding |
Language | English |
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IEEE
01.06.2009
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Abstract | This paper tackles the problem of reducing the speckle noise in the ultrasound B-Scan image while preserving the structure of boundaries and lesions. Our contribution is two fold. (1) We demonstrate for the first time that ICA Sparse Code Shrinkage (ICA-SCS) denoising algorithm can be applied to the envelope-detected ultrasound B-Scan image despeckling problem. ICA-SCS denoising algorithm is successful when the noise is additive white Gaussian noise (WGN). It uses higher order statistics and is also data adaptive. However, the speckle noise found in medical ultrasound B-Scan image is not strictly additive WGN. (2) Therefore, as a secondary improvement, we have incorporated a preprocessing step, developed by others, that makes the speckle noise much closer to the real additive WGN, hence more amenable to a denoising algorithm such as ICA-SCS. The experimental results show that the proposed method outperforms several classical methods chosen for comparison such as Wiener filtering and wavelet shrinkage, in its ability to reduce speckle and preserve edge details. |
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AbstractList | This paper tackles the problem of reducing the speckle noise in the ultrasound B-Scan image while preserving the structure of boundaries and lesions. Our contribution is two fold. (1) We demonstrate for the first time that ICA Sparse Code Shrinkage (ICA-SCS) denoising algorithm can be applied to the envelope-detected ultrasound B-Scan image despeckling problem. ICA-SCS denoising algorithm is successful when the noise is additive white Gaussian noise (WGN). It uses higher order statistics and is also data adaptive. However, the speckle noise found in medical ultrasound B-Scan image is not strictly additive WGN. (2) Therefore, as a secondary improvement, we have incorporated a preprocessing step, developed by others, that makes the speckle noise much closer to the real additive WGN, hence more amenable to a denoising algorithm such as ICA-SCS. The experimental results show that the proposed method outperforms several classical methods chosen for comparison such as Wiener filtering and wavelet shrinkage, in its ability to reduce speckle and preserve edge details. |
Author | Rao, N. Di Lai Dogra, V. Chung-hui Kuo Bhatt, S. |
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Snippet | This paper tackles the problem of reducing the speckle noise in the ultrasound B-Scan image while preserving the structure of boundaries and lesions. Our... |
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SubjectTerms | Additive noise additive white Gaussian noise Additive white noise Biomedical imaging Gaussian noise Higher order statistics ICA Independent component analysis Lesions Noise reduction sparse code shrinkage Speckle Ultrasonic imaging ultrasound image despeckling |
Title | An ultrasound image despeckling method using independent component analysis |
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