Skip to main contentSkip to search and navigation

UEF eREPOSITORY

    • English
    • suomi
  • English 
    • English
    • suomi
  • Login
View Item 
  •   Home
  • Artikkelit
  • Luonnontieteiden ja metsätieteiden tiedekunta
  • View Item
  •   Home
  • Artikkelit
  • Luonnontieteiden ja metsätieteiden tiedekunta
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Acoustic pressure field estimation methods for synthetic schlieren tomography

Thumbnail
Files
Article (15.37Mb)
Self archived version
final draft
Date
2019
Author(s)
Koponen, Eero
Leskinen, Jarkko
Tarvainen, Tanja
Pulkkinen, Aki
Unique identifier
10.1121/1.5098943
Metadata
Show full item record
More information
Research Database SoleCris

Self-archived article

Citation
Koponen, Eero. Leskinen, Jarkko. Tarvainen, Tanja. Pulkkinen, Aki. (2019). Acoustic pressure field estimation methods for synthetic schlieren tomography.  Journal of the acoustical society of america, 145, 2470. 10.1121/1.5098943.
Rights
© Acoustical Society of America
Licensed under
All rights reserved
Abstract

Synthetic schlieren tomography is a recently proposed three-dimensional (3D) optical imaging technique for studying ultrasound fields. The imaging setup is composed of an imaged target, a water tank, a camera, and a pulsed light source, which is stroboscopically synchronized with an ultrasound transducer to achieve tomographically stationary imaging of an ultrasound field. In this technique, ultrasound waves change the propagation of light rays by inducing a change in refractive index via the acousto-optic effect. The change manifests as optical flow in the imaged target. By performing the imaging in a tomographic fashion, the two-dimensional tomographic dataset of the optical flow can be transformed into a 3D ultrasound field. In this work, two approaches for acoustic pressure field estimation are introduced. The approaches are based on optical and potential flow regularized least square optimizations where regularization based on the Helmholtz equation is introduced. The methods are validated via simulations in a telecentric setup and are compared quantitatively and qualitatively to a previously introduced method. Cases of a focused, an obliquely propagating, and a standing wave ultrasound field are considered. The simulations demonstrate the efficiency of the introduced methods also in situations in which the previously applied method has weaknesses.

URI
https://erepo.uef.fi/handle/123456789/7583
Link to the original item
http://dx.doi.org/10.1121/1.5098943
Publisher
Acoustical Society of America (ASA)
Collections
  • Luonnontieteiden ja metsätieteiden tiedekunta [1144]
University of Eastern Finland
OpenAccess
eRepo
erepo@uef.fi
UEF Open Science
Accessibility in eRepo
Service provided by
the University of Eastern Finland Library
Library web pages
Twitter
Facebook
Youtube
Library blog
 sitemap
Search

Browse

All of the ArchiveResource types & CollectionsBy Issue DateAuthorsTitlesSubjectsFacultyDepartmentFull organizationSeriesMain subjectThis CollectionBy Issue DateAuthorsTitlesSubjectsFacultyDepartmentFull organizationSeriesMain subject

My Account

Login
University of Eastern Finland
OpenAccess
eRepo
erepo@uef.fi
UEF Open Science
Accessibility in eRepo
Service provided by
the University of Eastern Finland Library
Library web pages
Twitter
Facebook
Youtube
Library blog
 sitemap