Direct reconstruction of qualitative depth information from turbid media by a single hyper spectral image

Beitrag bei einer Tagung
(Konferenzbeitrag)


Details zur Publikation

Autorinnen und Autoren: Hohmann M, Hecht D, Lengenfelder B, Klämpfl F, Schmidt M
Verlag: SPIE
Jahr der Veröffentlichung: 2019
Tagungsband: Proc. SPIE 10885, Optical Diagnostics and Sensing XIX: Toward Point-of-Care Diagnostics
Sprache: Englisch


Abstract

For diagnostic imaging, a modality is required which has to be quick,
inexpensive and noninvasive. Furthermore, risks for the patients have to
be kept as low as possible since repetitive imaging might be required.
To enable risk free imaging, hyper spectral imaging as tool for 3D
tissue imaging is proposed to potentially meet all the above mentioned
requirements. In this study, the first results of three dimensional
reconstructions of hyper spectral images are presented. In general, the
back reflected image consists of information from many different depths
such that inclusions in different depths have a different effect on the
back reflected images. Moreover, due to the wavelength dependent
penetration depths, the spectral composition of the back reflected image
changes in a different manner for different depths. This difference is
normally not linear. However, due to a fine spectral resolution the
difference can be assumed to be linear. The partial derivative of the
wavelength is thus supposed to show the difference and allow the
analysis. To demonstrate this, polyurethane phantoms are manufactured
with TiO2 as scatterer and ink as absorber. The inclusions
are simulated by drilling holes into the phantom. The phantoms are
imaged with a hyper spectral camera with a resolution of 51x765x1450
voxel (x, y, λ) from 400 to 800 nm. The spectral resolution due to the
aperture is about 3 nm. In this study, first results are presented and a
qualitative depths reconstruction is demonstrated. It is possible to
show which inclusion is deeper with respect to the other.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Hohmann, Martin
Lehrstuhl für Photonische Technologien
Klämpfl, Florian Dr.-Ing.
Lehrstuhl für Photonische Technologien
Lengenfelder, Benjamin
Lehrstuhl für Photonische Technologien
Schmidt, Michael Prof. Dr.-Ing.
Lehrstuhl für Photonische Technologien


Forschungsbereiche

Medizintechnik
Forschungsschwerpunkt einer Fakultät: Technische Fakultät
Optische Technologien
Forschungsschwerpunkt einer Fakultät: Technische Fakultät


Zitierweisen

APA:
Hohmann, M., Hecht, D., Lengenfelder, B., Klämpfl, F., & Schmidt, M. (2019). Direct reconstruction of qualitative depth information from turbid media by a single hyper spectral image. In Proc. SPIE 10885, Optical Diagnostics and Sensing XIX: Toward Point-of-Care Diagnostics. San Francisco, US: SPIE.

MLA:
Hohmann, Martin, et al. "Direct reconstruction of qualitative depth information from turbid media by a single hyper spectral image." Proceedings of the Photonics West 2019: BIOS, San Francisco SPIE, 2019.

BibTeX: 

Zuletzt aktualisiert 2019-05-03 um 12:08