Contrast enhancement between linear and nonlinear scatterers
Contrast enhancement between linear and nonlinear scatterers
A method for creating an acoustic observation of a target volume, the method comprising the steps of transmitting a group of at least two acoustic pulses towards the target volume, receiving at least one detector an echo of the group scattered from the target volume, the echo having linear and nonlinear components, processing the scattered signal in such a way as to enhance at least part of the nonlinear component (and suppress the linear component) of the scattered signal in a signal P+, processing the scattered signal in such a way as to suppress at least part of the nonlinear component (and enhance the linear component) of the scattered signal in a signal P-, and producing a detection signal from a mathematical combination of the signals P+ and P-. The method can be used to suppress at least part of the non-linear component, and to enhance the linear component in order to improve the contrast of an image of an object located in water and surrounded by an oceanic bubble cloud, by utilising a ratio of signals P+ and P-. In other situations where bubbles are required to be enhanced in the image, such as in biomedical ultrasonics, the nonlinear component can be arranged to be enhanced, and the linear component suppressed, by utilising the ratio P-/P+.
PCT/GB2006/002335
4 January 2007
Leighton, Timothy Grant
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
White, Paul Robert
2dd2477b-5aa9-42e2-9d19-0806d994eaba
Finfer, Daniel Clark
1c917eb1-22a0-4a46-8aad-bf8914dce207
Leighton, Timothy Grant, White, Paul Robert and Finfer, Daniel Clark
(Inventors)
(2007)
Contrast enhancement between linear and nonlinear scatterers.
PCT/GB2006/002335.
Abstract
A method for creating an acoustic observation of a target volume, the method comprising the steps of transmitting a group of at least two acoustic pulses towards the target volume, receiving at least one detector an echo of the group scattered from the target volume, the echo having linear and nonlinear components, processing the scattered signal in such a way as to enhance at least part of the nonlinear component (and suppress the linear component) of the scattered signal in a signal P+, processing the scattered signal in such a way as to suppress at least part of the nonlinear component (and enhance the linear component) of the scattered signal in a signal P-, and producing a detection signal from a mathematical combination of the signals P+ and P-. The method can be used to suppress at least part of the non-linear component, and to enhance the linear component in order to improve the contrast of an image of an object located in water and surrounded by an oceanic bubble cloud, by utilising a ratio of signals P+ and P-. In other situations where bubbles are required to be enhanced in the image, such as in biomedical ultrasonics, the nonlinear component can be arranged to be enhanced, and the linear component suppressed, by utilising the ratio P-/P+.
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More information
Published date: 4 January 2007
Additional Information:
Target detection in bubbly water, International patent application number PCT/GB2006/002335 (filed 26/06/2006; claiming priority from UK patent application GB 0513031.5, University of Southampton 2005).
Identifiers
Local EPrints ID: 49421
URI: http://eprints.soton.ac.uk/id/eprint/49421
PURE UUID: ec937153-a017-4733-be95-a49f1b113e15
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Date deposited: 07 Dec 2007
Last modified: 11 Jul 2024 01:34
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Contributors
Inventor:
Daniel Clark Finfer
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