System and method for adaptive spatial compounding for...

Details System and method for adaptive spatial compounding for... System and method for adaptive spatial compounding for...

2006-12-04

2010-10-19

Le, Vu (Department: 2624)

Image analysis

Applications

Biomedical applications

C382S260000

Reexamination Certificate

active

07817839

ABSTRACT:
A method for removing speckle noise from ultrasound images includes providing a plurality of digitized ultrasound (US) images, each image comprising a plurality of intensities corresponding to a domain of points on a 2-dimensional grid, initializing an initial gain associated with each of said plurality of US images, estimating a signal sub-space by averaging over each US image divided by its associated gain, and estimating an updated gain by projecting its associated image into said signal sub-space. If an absolute difference of said updated gain and said initial gain is less than a pre-determined quantity, obtaining an averaged image from said signal sub-space, estimating an optimal Wiener filter from said plurality of US images and said averaged image, and filtering said averaged image with said Wiener filter, wherein said speckle noise is substantially minimized.

REFERENCES:
patent: 2005/0053305 (2005-03-01), Li et al.
patent: 2007/0083114 (2007-04-01), Yang et al.

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