Adaptive median filter algorithm to remove impulse noise in x-ray and CT images and speckle in ultrasound images

Amit R. Sawant; Herbert D. Zeman; Diane M. Muratore; Sanjiv S. Samant; Frank A. DiBianca

doi:10.1117/12.348522

21 May 1999 Adaptive median filter algorithm to remove impulse noise in x-ray and CT images and speckle in ultrasound images

Amit R. Sawant, Herbert D. Zeman, Diane M. Muratore, Sanjiv S. Samant, Frank A. DiBianca

Author Affiliations +

Proceedings Volume 3661, Medical Imaging 1999: Image Processing; (1999) https://doi.org/10.1117/12.348522
Event: Medical Imaging '99, 1999, San Diego, CA, United States

Abstract

An adaptive median filter algorithm to remove impulse noise in x-ray images and speckle in ultrasound images is presented. The ordinary median filter tends to distort or lose fine details in an image. Also, a significant amount of the original information in the image is altered. The proposed algorithm considers the local variability over the entire image to ensure that the fine details are preserved and more than 90 percent of the original information is retained. The robustness of the algorithm is demonstrated by applying it to images from different modalities like diagnostic x-ray, CT, portal imaging and ultrasound.

Citation Download Citation

Amit R. Sawant, Herbert D. Zeman, Diane M. Muratore, Sanjiv S. Samant, and Frank A. DiBianca "Adaptive median filter algorithm to remove impulse noise in x-ray and CT images and speckle in ultrasound images", Proc. SPIE 3661, Medical Imaging 1999: Image Processing, (21 May 1999); https://doi.org/10.1117/12.348522

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