Low-Dose CT Dental Image Denoising by Morphological Operators and 3D Filtering
Resumo
The impact in reducing the radiation dose in computed tomography (CT) exams is directly related to the quality of the images obtained in these exams. Such images are degraded by undesirable artifacts, known as noise. In order to improve the quality of these images and provide an accurate medical diagnosis, it is necessary to apply noise reduction techniques. In this study, a method based on structural segmentation and filtering through morphological operators along with a BM3D filtering is proposed to reduce noise and preserve details in low-dose CT dental images. Experimental results of the proposed method were compared with several existing methods and validated using the PSNR, SSIM, MSE and EPI metrics. Our method demonstrated superior performance among the evaluated filters. In comparison to the filter that obtained the best results, our method had a gain of 12.46% on PSNR, 11.11% on SSIM, 14.5% on MSE and 9.63% on EPI metrics.
Palavras-chave:
Low dose, Computed Tomography, Noise reduction, Mathematical morphology, BM3D, PSNR
Referências
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T. Loupas W. McDicken P. L. Allan "An adaptive weighted median filter for speckle suppression in medical ultrasonic images" IEEE transactions on Circuits and Systems vol. 36 no. 1 pp. 129-1989.
Z. Wang D. Zhang "Progressive switching median filter for the removal of impulse noise from highly corrupted images" IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing vol. 46 no. 1 pp. 78-80 1999.
K. K. V. Toh N. A. M. Isa "Noise adaptive fuzzy switching median filter for salt-and-pepper noise reduction" IEEE signal processing letters vol. 17 no. 3 pp. 281-2010.
K. Vasanth T. Manjunath S. N. Raj "A decision based unsymmetrical trimmed modified winsorized mean filter for the removal of high density salt and pepper noise in images and videos" Procedia Computer Science vol. 54 pp. 595-2015.
U. Erkan L. Gökrem "A new method based on pixel density in salt and pepper noise removal" Turkish Journal of Electrical Engineering & Computer Sciences vol. 26 no. 1 pp. 162-2018.
D. Ze-Feng Y. Zhou-Ping X. You-Lun "High probability impulse noise-removing algorithm based on mathematical morphology" IEEE signal processing Letters vol. 14 no. 1 pp. 31-34 2007.
C. Solomon T. Breckon Fundamentos de processamento digital de imagens: uma abordagem prá tica com exemplos em Matlab 2000.
S. Masood M. Sharif A. Masood M. Yasmin M. Raza "A survey on medical image segmentation" Current Medical Imaging Reviews vol. 11 no. 1 pp. 3-14 2015.
N. Otsu "A threshold selection method from gray-level histograms" IEEE transactions on systems man and cybernetics vol. 9 no. 1 pp. 62-66 1979.
A. M. Reza "Realization of the contrast limited adaptive histogram equalization (clahe) for real-time image enhancement" Journal of VLSI signal processing systems for signal image and video technology vol. 38 no. 1 pp. 35-44 2004.
A. Hore D. Ziou "Image quality metrics: Psnr vs. ssim" 20th International Conference on Pattern Recognition pp. 2366-22010.
Z. Wang A. C. Bovik H. R. Sheikh E. P. Simoncelli "Image quality assessment: from error visibility to structural similarity" IEEE transactions on image processing vol. 13 no. 2 pp. 600-2004.
F. Sattar L. Floreby G. Salomonsson B. Lovstrom "Image enhancement based on a nonlinear multiscale method" IEEE transactions on image processing vol. 6 no. 6 pp. 888-895 1997.
1I. Pitas A. N. Venetsanopoulos "Order statistics in digital image processing" Proceedings of the IEEE vol. 80 no. 12 pp. 1893-1921 1992.
J. Feng M. Ding X. Zhang "Decision-based adaptive morphological filter for fixed-value impulse noise removal" Optik-International Journal for Light and Electron Optics vol. no. 16 pp. 4288-42014.
F. Bergholm "Edge focusing" IEEE Transactions on Pattern Analysis and Machine Intelligence no. 6 pp. 726-1987.
C. Tomasi R. Manduchi "Bilateral filtering for gray and color images" Computer Vision 1998. Sixth International Conference on pp. 839-1998.
G. Treece "The bitonic filter: linear filtering in an edge-preserving morphological framework" IEEE Transactions on Image Processing vol. 25 no. 11 pp. 5199-52016.
K. He J. Sun X. Tang "Guided image filtering" IEEE transactions on pattern analysis & machine intelligence no. 6 pp. 1397-12013.
K. Dabov A. Foi V. Katkovnik K. Egiazarian "Image denoising by sparse 3-d transform-domain collaborative filtering" IEEE Transactions on image processing vol. 16 no. 8 pp. 2080-2095 2007.
D. L. Donoho I. M. Johnstone "Adapting to unknown smoothness via wavelet shrinkage" Journal of the american statistical association vol. 90 no. pp. 1200-11995.
T. Loupas W. McDicken P. L. Allan "An adaptive weighted median filter for speckle suppression in medical ultrasonic images" IEEE transactions on Circuits and Systems vol. 36 no. 1 pp. 129-1989.
Z. Wang D. Zhang "Progressive switching median filter for the removal of impulse noise from highly corrupted images" IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing vol. 46 no. 1 pp. 78-80 1999.
K. K. V. Toh N. A. M. Isa "Noise adaptive fuzzy switching median filter for salt-and-pepper noise reduction" IEEE signal processing letters vol. 17 no. 3 pp. 281-2010.
K. Vasanth T. Manjunath S. N. Raj "A decision based unsymmetrical trimmed modified winsorized mean filter for the removal of high density salt and pepper noise in images and videos" Procedia Computer Science vol. 54 pp. 595-2015.
U. Erkan L. Gökrem "A new method based on pixel density in salt and pepper noise removal" Turkish Journal of Electrical Engineering & Computer Sciences vol. 26 no. 1 pp. 162-2018.
D. Ze-Feng Y. Zhou-Ping X. You-Lun "High probability impulse noise-removing algorithm based on mathematical morphology" IEEE signal processing Letters vol. 14 no. 1 pp. 31-34 2007.
C. Solomon T. Breckon Fundamentos de processamento digital de imagens: uma abordagem prá tica com exemplos em Matlab 2000.
S. Masood M. Sharif A. Masood M. Yasmin M. Raza "A survey on medical image segmentation" Current Medical Imaging Reviews vol. 11 no. 1 pp. 3-14 2015.
N. Otsu "A threshold selection method from gray-level histograms" IEEE transactions on systems man and cybernetics vol. 9 no. 1 pp. 62-66 1979.
A. M. Reza "Realization of the contrast limited adaptive histogram equalization (clahe) for real-time image enhancement" Journal of VLSI signal processing systems for signal image and video technology vol. 38 no. 1 pp. 35-44 2004.
A. Hore D. Ziou "Image quality metrics: Psnr vs. ssim" 20th International Conference on Pattern Recognition pp. 2366-22010.
Z. Wang A. C. Bovik H. R. Sheikh E. P. Simoncelli "Image quality assessment: from error visibility to structural similarity" IEEE transactions on image processing vol. 13 no. 2 pp. 600-2004.
F. Sattar L. Floreby G. Salomonsson B. Lovstrom "Image enhancement based on a nonlinear multiscale method" IEEE transactions on image processing vol. 6 no. 6 pp. 888-895 1997.
Publicado
28/10/2019
Como Citar
STRINGHINI, Romulo Marconato; WELFER, Daniel; GAMARRA, Daniel Fernando Tello ; D'ORNELLAS, Marcos Cordeiro.
Low-Dose CT Dental Image Denoising by Morphological Operators and 3D Filtering. In: CONFERENCE ON GRAPHICS, PATTERNS AND IMAGES (SIBGRAPI), 32. , 2019, Rio de Janeiro.
Anais [...].
Porto Alegre: Sociedade Brasileira de Computação,
2019
.
DOI: https://doi.org/10.5753/sibgrapi.2019.9797.
