Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Lauri Harhanen"'
Publikováno v:
JOURNAL OF COMPUTATIONAL PHYSICS. 291:218-237
A novel variant of the level set method is introduced for dynamic X-ray tomography. The target is allowed to change in time while being imaged by one or several source-detector pairs at a relatively high frame-rate. The algorithmic approach is motiva
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbae43a093ebb814350823dfed99a782
https://doi.org/10.1016/j.jcp.2015.03.016
https://doi.org/10.1016/j.jcp.2015.03.016
Publikováno v:
BIT Numerical Mathematics. 52:45-63
This work extends the algorithm for computing the convex source support in the framework of the Poisson equation to a bounded three-dimensional domain. The convex source support is, in essence, the smallest (nonempty) convex set that supports a sourc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8456515332b0cd3e25af227d2673d7bb
https://doi.org/10.1007/s10543-011-0338-0
https://doi.org/10.1007/s10543-011-0338-0
Autor:
Lauri Harhanen, Nuutti Hyvönen
Publikováno v:
Inverse Problems & Imaging. 4:429-448
This work extends the concept of convex source support to the framework of inverse source problems for the Poisson equation in an insulated upper half-plane. The convex source support is, in essence, the smallest (nonempty) convex set that supports a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5c1c707b448876a09b800ad49ce99ce
https://doi.org/10.3934/ipi.2010.4.429
https://doi.org/10.3934/ipi.2010.4.429
In optical tomography a physical body is illuminated with near-infrared light and the resulting outward photon flux is measured at the object boundary. The goal is to reconstruct internal optical properties of the body, such as absorption and diffusi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::293903feaa94a07b6e9509cd4e591692
http://arxiv.org/abs/1505.07590
http://arxiv.org/abs/1505.07590
Electrical impedance tomography is an imaging modality for extracting information on the conductivity distribution inside a physical body from boundary measurements of current and voltage. In many practical applications, it is a priori known that the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3422a8ab5e5d4047fbde71fa955a4094
https://aaltodoc.aalto.fi/handle/123456789/36773
https://aaltodoc.aalto.fi/handle/123456789/36773
Publikováno v:
Inverse Problems. 27:115006
This work considers electrical impedance tomography in the special case that the boundary measurements of current and voltage are carried out with two (infinitely) small electrodes. One of the electrodes lies at a fixed position while the other is mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9310f607a5824e4a5c849871d600b42b
https://doi.org/10.1088/0266-5611/27/11/115006
https://doi.org/10.1088/0266-5611/27/11/115006