Dr. Tobias Lasser Profile

Dr. Tobias Lasser

at Technische Univ München

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Author

Publications (19)

Proceedings Article | 1 April 2024 Presentation + Paper

Advancing x-ray dark-field imaging for human-scale applications: helical CT and surview imaging

Jakob Haeusele, Clemens Schmid, Manuel Viermetz, Nikolai Gustschin, Tobias Lasser, Thomas Koehler, Franz Pfeiffer

Proceedings Volume 12925, 129250G (2024) https://doi.org/10.1117/12.3006374

KEYWORDS: X-ray computed tomography, Prototyping, Interferometers, X-rays, Sensors, X-ray imaging, Phase retrieval, Vibration, Scanners, Imaging systems

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Proceedings Article | 18 October 2022 Open Access

Dark-field imaging on a clinical CT system: performance and potential based on first results

Nikolai Gustschin, Manuel Viermetz, Clemens Schmid, Jakob Hausele, Frank Bergner, Tobias Lasser, Thomas Koehler, Franz Pfeiffer

Proceedings Volume 12304, 1230403 (2022) https://doi.org/10.1117/12.2646988

KEYWORDS: Signal attenuation, Lung, Scattering, Tissues, Imaging systems, X-rays, Interferometers, X-ray computed tomography, Prototyping

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Proceedings Article | 18 October 2022 Open Access

Geometric calibration of seven degree of freedom robotic sample holder for x-ray CT

Erdal Pekel, Florian Schaff, Martin Dierolf, Franz Pfeiffer, Tobias Lasser

Proceedings Volume 12304, 123042L (2022) https://doi.org/10.1117/12.2646492

KEYWORDS: Robotics, Calibration, Sensors, X-rays, Image sensors, Image segmentation, 3D modeling, X-ray computed tomography, Detection and tracking algorithms

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Proceedings Article | 18 October 2022 Open Access

Dark-field imaging on a clinical CT system: sample data processing and reconstruction

Jakob Haeusele, Clemens Schmid, Manuel Viermetz, Nikolai Gustschin, Tobias Lasser, Frank Bergner, Thomas Koehler, Franz Pfeiffer

Proceedings Volume 12304, 1230424 (2022) https://doi.org/10.1117/12.2646440

KEYWORDS: Imaging systems, Interferometers, Data processing, X-rays, X-ray imaging, Lung, Statistical analysis, Signal attenuation

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Proceedings Article | 18 October 2022 Open Access

Dark-field imaging on a clinical CT system: modelling of interferometer vibrations

Clemens Schmid, Manuel Viermetz, Nikolai Gustschin, Jakob Haeusele, Tobias Lasser, Thomas Koehler, Franz Pfeiffer

Proceedings Volume 12304, 1230428 (2022) https://doi.org/10.1117/12.2646676

KEYWORDS: Phase contrast, Visibility, Interferometers, Principal component analysis, Sensors, X-rays, X-ray computed tomography, Signal attenuation, Refractive index, Diffusion, Systems modeling

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Proceedings Article | 18 October 2022 Open Access

Hybrid reconstruction using shearlets and deep learning for sparse x-ray computed tomography

Andi Braimllari, Tobias Lasser, Theodor Cheslerean-Boghiu

Proceedings Volume 12304, 123040N (2022) https://doi.org/10.1117/12.2646385

KEYWORDS: X-rays, X-ray computed tomography, Reconstruction algorithms, Wavefronts, Model-based design, Visibility, Data modeling, Signal to noise ratio, Wavelets

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Proceedings Article | 18 May 2020 Paper

3D deconvolution in Fourier integral microscopy

Anca Stefanoiu, Gabriele Scrofani, Genaro Saavedra, Manuel Martínez-Corral, Tobias Lasser

Proceedings Volume 11396, 113960I (2020) https://doi.org/10.1117/12.2558516

KEYWORDS: Microlens array, Deconvolution, Microscopes, Microscopy, Expectation maximization algorithms, Sensors, 3D image processing, Image resolution, Cameras, Relays

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Proceedings Article | 28 May 2019 Paper

elsa - an elegant framework for tomographic reconstruction

Tobias Lasser, Maximilian Hornung, David Frank

Proceedings Volume 11072, 110723A (2019) https://doi.org/10.1117/12.2534833

KEYWORDS: Tomography, X-rays, X-ray imaging, Software frameworks

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Proceedings Article | 28 May 2019 Paper

Task-driven acquisition in anisotropic x-ray dark-field tomography

Tobias Lasser, Theodor Cheslerean Boghiu, Franz Pfeiffer

Proceedings Volume 11072, 1107218 (2019) https://doi.org/10.1117/12.2534831

KEYWORDS: X-rays, Tomography, X-ray imaging, Reconstruction algorithms, Interferometers, Modulation transfer functions, Optimization (mathematics), Scattering

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Proceedings Article | 15 July 2015 Paper

Reproducible high-resolution multispectral image acquisition in dermatology

Alexandru Duliu, José Gardiazabal, Tobias Lasser, Nassir Navab

Proceedings Volume 9537, 953722 (2015) https://doi.org/10.1117/12.2183990

KEYWORDS: Cameras, Multispectral imaging, Sensors, Image acquisition, Image registration, Dermatology, Calibration, Tissues, RGB color model, Image sensors

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Proceedings Article | 21 March 2014 Paper

A versatile tomographic forward- and back-projection approach on multi-GPUs

Andreas Fehringer, Tobias Lasser, Irene Zanette, Peter Noël, Franz Pfeiffer

Proceedings Volume 9034, 90344F (2014) https://doi.org/10.1117/12.2043860

KEYWORDS: Tomography, Matrices, Sensors, Synchrotrons, Projection systems, X-ray computed tomography, Computing systems, Ultrafast phenomena, Projection devices, Liver

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Proceedings Article | 20 March 2014 Paper

Towards robust identification and tracking of nevi in sparse photographic time series

Alexandru Duliu, Jakob Vogel, Yuji Oyamada, Jose Gardiazabal, Tobias Lasser, Mahzad Ziai, Rüdiger Hein, Nassir Navab

Proceedings Volume 9035, 90353D (2014) https://doi.org/10.1117/12.2043788

KEYWORDS: Image segmentation, Photography, Dermatology, Distortion, Radar, Skin cancer, Cameras, Skin, Melanoma, Visualization

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Proceedings Article | 17 February 2012 Paper

Freehand SPECT reconstructions using look up tables

Dzhoshkun Shakir, Nassir Navab, Risto Kojchev, Sibylle Ziegler, Alexander Hartl, Tobias Lasser

Proceedings Volume 8316, 83162H (2012) https://doi.org/10.1117/12.911599

KEYWORDS: Optical spheres, Single photon emission computed tomography, Sensors, 3D modeling, Data modeling, Solids, 3D image processing, Nuclear imaging, Diagnostics, Optical tracking

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Proceedings Article | 17 February 2012 Paper

Two new ad-hoc models of detection physics and their evaluation for navigated beta probe surface imaging

Dzhoshkun Shakir, Florian Schneider, Tobias Lasser, Nassir Navab, Alexander Hartl, Jozef Pulko, Sibylle Ziegler

Proceedings Volume 8316, 83162G (2012) https://doi.org/10.1117/12.911456

KEYWORDS: Data modeling, Seaborgium, Physics, Image quality, Statistical modeling, Sensors, Tumors, Signal attenuation, Instrument modeling, Visualization

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Proceedings Article | 16 March 2011 Paper

Freehand SPECT in low uptake situations

Tobias Lasser, Sibylle Ziegler, Nassir Navab

Proceedings Volume 7961, 79611Z (2011) https://doi.org/10.1117/12.877552

KEYWORDS: Single photon emission computed tomography, Sensors, Imaging systems, Lymphatic system, 3D image processing, Biopsy, 3D acquisition, Breast, Neck, 3D modeling

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Proceedings Article | 5 March 2011 Paper

Manifold learning for dimensionality reduction and clustering of skin spectroscopy data

Tobias Lasser, Nassir Navab, Asad Safi, Victor Castañeda, Diana Mateus

Proceedings Volume 7963, 79631A (2011) https://doi.org/10.1117/12.877952

KEYWORDS: Skin, Spectroscopy, Diffusion, Principal component analysis, Visualization, Optical spectroscopy, Data acquisition, 3D image processing, Biopsy

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Proceedings Article | 9 March 2010 Paper

Navigated tracking of skin lesion progression with optical spectroscopy

Alexandru Duliu, Sibylle Ziegler, Tobias Lasser, Thomas Wendler, Nassir Navab, Asad Safi

Proceedings Volume 7624, 76243P (2010) https://doi.org/10.1117/12.844244

KEYWORDS: Skin, Optical tracking, Optical spectroscopy, Augmented reality, Spectroscopy, Visualization, Lymphoma, Imaging systems, Optical fibers, Target acquisition

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Proceedings Article | 12 July 2007 Paper

360° free space fluorescence molecular tomography using silhouette surface reconstruction

N. Deliolanis, J. Ripoll, T. Lasser, V. Ntziachristos, A. Soubret

Proceedings Volume 6629, 662910 (2007) https://doi.org/10.1117/12.729417

KEYWORDS: Luminescence, Natural surfaces, Fluorescence tomography, Tomography, 3D acquisition, 3D image processing, Tissue optics, In vivo imaging, Reconstruction algorithms, Free space

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Proceedings Article | 28 February 2007 Paper

Analysis of reconstructions in full view fluorescence molecular tomography

Eric Miller, Damon Hyde, Vasilis Ntziachristos, Dana Brooks, Tobias Lasser, Antoine Soubret, Joshua Dunham

Proceedings Volume 6498, 649803 (2007) https://doi.org/10.1117/12.713900

KEYWORDS: Luminescence, Reconstruction algorithms, Tomography, Sensors, Fluorescence tomography, Diffusion, In vivo imaging, Imaging systems, Data modeling, Tissue optics

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Showing 5 of 19 publications

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