Abstract：
:Current medical ultrasonic scanning instrumentation permits the display of fine image detail (speckle) which does not transfer useful information but degrades the apparent low contrast resolution in the image. An adaptive two-dimensional filter has been developed which uses local features of image texture to recognize and maximally low-pass filter those parts of the image which correspond to fully developed speckle, while substantially preserving information associated with resolved-object structure. A first implementation of the filter is described which uses the ratio of the local variance and the local mean as the speckle recognition feature. Preliminary results of applying this form of display processing to medical ultrasound images are very encouraging; it appears that the visual perception of features such as small discrete structures, subtle fluctuations in mean echo level and changes in image texture may be enhanced relative to that for unprocessed images.
journal_name
Ultrasonicsjournal_title
Ultrasonicsauthors
Bamber JC,Daft Cdoi
10.1016/0041-624x(86)90072-7subject
Has Abstractpub_date
1986-01-01 00:00:00pages
41-4issue
1eissn
0041-624Xissn
1874-9968pii
0041-624X(86)90072-7journal_volume
24pub_type
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