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4th IEEE Southwest Symposium on Image Analysis and Interpretation
Speckle Noise Filtering for Restoration of Coherent Shear Beam Images
Austin, Texas
April 02-April 04
ISBN: 0-7695-0595-3
Mark Wilson, Texas Tech University
Sunanda Mitra, Texas Tech University
Thomas Krile, Texas Tech University
Shear beam imaging is a coherent reflective imaging technique, which inherently contains signal dependent speckle noise with characteristic glints. The removal of the speckle using a minimal number of frames while preserving the glints is the major concern of this paper. In the past, several methods have been used to eliminate this noise. The complexity of the algorithms ranged from a simple nonlinear median filter to complex linear and nonlinear models. Here, fast morphological and wavelet filters are proposed and are shown to remove speckle better than the previous methods. The morphological filters are non-linear in nature and computationally efficient, thus making them quite attractive. The glint will be preserved by its segmentation from each frame prior to speckle removal. This paper will describe the morphological, wavelet, and segmentation techniques used and discuss the current results.
Citation:
Mark Wilson, Sunanda Mitra, Thomas Krile, "Speckle Noise Filtering for Restoration of Coherent Shear Beam Images," ssiai, pp.166, 4th IEEE Southwest Symposium on Image Analysis and Interpretation, 2000
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