Helmar Bergmann

According to our database, Helmar Bergmann authored at least 35 papers between 1994 and 2012.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of five.

2012

Real-time 2D/3D registration for tumor motion tracking during radiotherapy.

Hugo Furtado, Christelle Gendrin, Christoph Bloch, Jakob Spoerk, Supriyanto A. Pawiro, Christoph Weber, Michael Figl, Markus Stock, Dietmar Georg, Helmar Bergmann, Wolfgang Birkfellner

Proceedings of the Medical Imaging 2012: Image Processing, 2012

Real-Time Intensity Based 2D/3D Registration for Tumor Motion Tracking During Radiotherapy.

Hugo Furtado, Christelle Gendrin, Christoph Bloch, Jakob Spoerk, Suprianto A. Pawiro, Christoph Weber, Michael Figl, Helmar Bergmann, Markus Stock, Dietmar Georg, Wolfgang Birkfellner

Proceedings of the Bildverarbeitung für die Medizin 2012 - Algorithmen - Systeme, 2012

2011

Comparison of two navigation system designs for flexible endoscopes using abdominal 3D ultrasound.

Marcus Kaar, Rainer Hoffmann, Helmar Bergmann, Michael Figl, Christoph Bloch, Alfred Kratochwil, Wolfgang Birkfellner, Johann Hummel

Proceedings of the Medical Imaging 2011: Visualization, 2011

2010

A new gold-standard dataset for 2D/3D image registration evaluation.

Supriyanto A. Pawiro, Primoz Markelj, Christelle Gendrin, Michael Figl, Markus Stock, Christoph Bloch, Christoph Weber, Ewald Unger, Iris Nöbauer, Franz Kainberger, Helga Bergmeister, Dietmar Georg, Helmar Bergmann, Wolfgang Birkfellner

Proceedings of the Medical Imaging 2010: Visualization, 2010

Towards real-time 2D/3D registration for organ motion monitoring in image-guided radiation therapy.

Christelle Gendrin, Jakob Spoerk, Christoph Bloch, Supriyanto A. Pawiro, Christoph Weber, Michael Figl, Primoz Markelj, Franjo Pernus, Dietmar Georg, Helmar Bergmann, Wolfgang Birkfellner

Proceedings of the Medical Imaging 2010: Visualization, 2010

2009

Evaluation of dynamic electromagnetic tracking deviation.

Johann Hummel, Michael Figl, Michael R. Bax, Ramin Shahidi, Helmar Bergmann, Wolfgang Birkfellner

Proceedings of the Medical Imaging 2009: Visualization, 2009

2008

The Zernike Expansion - An Example of a Merit Function for 2D/3D Registration Based on Orthogonal Functions.

Shuo Dong, Joachim Kettenbach, Isabella Hinterleitner, Helmar Bergmann, Wolfgang Birkfellner

Proceedings of the Medical Image Computing and Computer-Assisted Intervention, 2008

2007

Motion correction for radiation therapy of prostate using B-mode ultrasound.

Johann Hummel, Michael Figl, Jörg Schmidbauer, Martina Tinzl, Helmar Bergmann, Wolfgang Birkfellner

Proceedings of the Medical Imaging 2007: Visualization and Image-Guided Procedures, 2007

Stochastic rank correlation for slice-to-volume registration of fluoroCT/CT imaging.

Wolfgang Birkfellner, Michael Figl, Helmar Bergmann

Proceedings of the Medical Imaging 2007: Visualization and Image-Guided Procedures, 2007

2006

Endoscopic navigation system using 2D/3D registration.

Johann Hummel, Michael Figl, Helmar Bergmann, Wolfgang Birkfellner

Proceedings of the Medical Imaging 2006: Visualization, 2006

2005

A fully automated calibration method for an optical see-through head-mounted operating microscope with variable zoom and focus.

Michael Figl, Christopher Ede, Johann Hummel, Felix Wanschitz, Rolf Ewers, Helmar Bergmann, Wolfgang Birkfellner

IEEE Trans. Medical Imaging, 2005

Standardized evaluation method for electromagnetic tracking systems.

Johann Hummel, Calvin R. Maurer Jr., Michael Figl, Michael R. Bax, Helmar Bergmann, Wolfgang Birkfellner, Ramin Shahidi

Proceedings of the Medical Imaging 2005: Visualization, 2005

Design and automatic calibration of a head mounted operating binocular for augmented reality applications in computer-aided surgery.

Michael Figl, Christopher Ede, Wolfgang Birkfellner, Johann Hummel, Rudolf Hanel, Helmar Bergmann

Proceedings of the Medical Imaging 2005: Visualization, 2005

Fast DRR Generation for 2D/3D Registration.

Wolfgang Birkfellner, Rudolf Seemann, Michael Figl, Johann Hummel, Christopher Ede, Peter Homolka, Xinhui Yang, Peter Niederer, Helmar Bergmann

Proceedings of the Medical Image Computing and Computer-Assisted Intervention, 2005

2004

Hybrid tracking system for flexible endoscopes.

Johann Hummel, Michael Figl, Wolfgang Birkfellner, Christopher Ede, Rudolf Seemann, Helmar Bergmann

Proceedings of the Medical Imaging 2004: Visualization, 2004

Automatic calibration of an optical see-through head-mounted display for augmented reality applications in computer-assisted interventions.

Michael Figl, Christopher Ede, Wolfgang Birkfellner, Johann Hummel, Rudolf Seemann, Helmar Bergmann

Proceedings of the Medical Imaging 2004: Visualization, 2004

2003

Navigation system for flexible endoscopes.

Johann Hummel, Michael Figl, Wolfgang Birkfellner, Michael Häfner, Christian Kollmann, Helmar Bergmann

Proceedings of the Medical Imaging 2003: Visualization, 2003

Calibration of an optical see-through head-mounted display with variable zoom and focus for applications in computer-assisted interventions.

Michael Figl, Wolfgang Birkfellner, Johann Hummel, Christopher Ede, Rudolf Hanel, Helmar Bergmann

Proceedings of the Medical Imaging 2003: Visualization, 2003

2002

A Head-Mounted Operating Binocular for Augmented Reality Visualization in Medicine - Design and Initial Evaluation.

Wolfgang Birkfellner, Michael Figl, Klaus Huber, Franz Watzinger, Felix Wanschitz, Johann Hummel, Rudolf Hanel, Wolfgang Greimel, Peter Homolka, Rolf Ewers, Helmar Bergmann

IEEE Trans. Medical Imaging, 2002

Laboratory assessment of a miniature electromagnetic tracker.

Johann Hummel, Wolfgang Birkfellner, Michael Figl, C. Haider, Rudolf Hanel, Helmar Bergmann

Proceedings of the Medical Imaging 2002: Visualization, 2002

PC-based control unit for a head-mounted operating microscope for augmented-reality visualization in surgical navigation.

Michael Figl, Wolfgang Birkfellner, Franz Watzinger, Felix Wanschitz, Johann Hummel, Rudolf A. Hanel, Rolf Ewers, Helmar Bergmann

Proceedings of the Medical Imaging 2002: Visualization, 2002

Stereoscopic visualization in the varioscope AR: a see-through head-mounted display for surgical navigation.

Wolfgang Birkfellner, Michael Figl, Christian Matula, Johann Hummel, Rudolf A. Hanel, Herwig Imhof, Felix Wanschitz, Arne Wagner, Franz Watzinger, Helmar Bergmann

Proceedings of the Medical Imaging 2002: Visualization, 2002

The Control Unit for a Head Mounted Operating Microscope Used for Augmented Reality Visualization in Computer Aided Sugery.

Michael Figl, Wolfgang Birkfellner, Christopher Ede, Johann Hummel, Rudolf Hanel, Franz Watzinger, Felix Wanschitz, Rolf Ewers, Helmar Bergmann

Proceedings of the 2002 IEEE / ACM International Symposium on Mixed and Augmented Reality (ISMAR 2002), 30 September, 2002

2001

Calibration of projection parameters in the varioscope AR, a head-mounted display for augmented-reality visualization in image-guided therapy.

Wolfgang Birkfellner, Michael Figl, Klaus Huber, Johann Hummel, Rudolf A. Hanel, Peter Homolka, Franz Watzinger, Felix Wanschitz, Rolf Ewers, Helmar Bergmann

Proceedings of the Medical Imaging 2001: Visualization, 2001

Current Status of the Varioscope AR, a Head-Mounted Operating Microscope for Computer-Aided Surgery.

Michael Figl, Wolfgang Birkfellner, Johann Hummel, Rudolf Hanel, Peter Homolka, Franz Watzinger, Felix Wanschitz, Rolf Ewers, Helmar Bergmann

Proceedings of the 4th International Symposium on Augmented Reality (ISAR 2001), 2001

Fusion of MR and CT scans of the pelvis in cases of malignant bone tumors.

Wolfgang Birkfellner, Eva Schwameis, Friedrich Vorbeck, Rudolf Hanel, Wolfgang Greimel, Johann Hummel, Michael Figl, Franz Kainberger, Herwig Imhof, Rainer Kotz, Helmar Bergmann

Proceedings of the CARS 2001. Computer Assisted Radiology and Surgery. Proceedings of the 15th International Congress and Exhibition, 2001

Calibration of a head-mounted operating microscope for augmented reality visualization in CAS.

Wolfgang Birkfellner, Michael Figl, Klaus Huber, Franz Watzinger, Felix Wanschitz, Rudolf Hanel, Johann Hummel, Rolf Ewers, Helmar Bergmann

Proceedings of the CARS 2001. Computer Assisted Radiology and Surgery. Proceedings of the 15th International Congress and Exhibition, 2001

2000

A Modular Software System for Computer Aided Surgery and Its First Application in Oral Implantology.

Wolfgang Birkfellner, Klaus Huber, Alan Larson, Dennis P. Hanson, Markus Diemling, Peter Homolka, Helmar Bergmann

IEEE Trans. Medical Imaging, 2000

Accuracy of a Navigation System for Computer-Aided Oral Implantology.

Wolfgang Birkfellner, Felix Wanschitz, Franz Watzinger, Klaus Huber, Michael Figl, Christian Schopper, Rudolf Hanel, Franz Kainberger, Joachim Kettenbach, Sanda Patruta, Rolf Ewers, Helmar Bergmann

Proceedings of the Medical Image Computing and Computer-Assisted Intervention, 2000

The Varioscope AR - A Head-Monted Operating Microscope for Augmented Reality.

Wolfgang Birkfellner, Michael Figl, Klaus Huber, Franz Watzinger, Felix Wanschitz, Rudolf Hanel, Arne Wagner, Dietmar Rafolt, Rolf Ewers, Helmar Bergmann

Proceedings of the Medical Image Computing and Computer-Assisted Intervention, 2000

Development of the Varioscope AR. A see-through HMD for computer-aided surgery.

Wolfgang Birkfellner, Klaus Huber, Franz Watzinger, Franz Figl, Felix Wanschitz, Rudolf Hanel, Dietmar Rafolt, Rolf Ewers, Helmar Bergmann

Proceedings of the IEEE and ACM International Symposium on Augmented Reality, 2000

1999

Computer-Aided Implant Dentistry - An Early Report.

Wolfgang Birkfellner, Peter Solar, André Gahleitner, Klaus Huber, Franz Kainberger, Joachim Kettenbach, Peter Homolka, Markus Diemling, Georg Watzek, Helmar Bergmann

Proceedings of the Medical Image Computing and Computer-Assisted Intervention, 1999

1998

Calibration of tracking systems in a surgical environment.

Wolfgang Birkfellner, Franz Watzinger, Felix Wanschitz, Rolf Ewers, Helmar Bergmann

IEEE Trans. Medical Imaging, 1998

Cocepts and Results in the Development of a Hybrid Tracking System for Computer Aided Surgery.

Wolfgang Birkfellner, Franz Watzinger, Felix Wanschitz, Georg Enislidis, Michael Truppe, Rolf Ewers, Helmar Bergmann

Proceedings of the Medical Image Computing and Computer-Assisted Intervention, 1998

1994

Evaluation of gastric antral motility in four dimensions.

Helmar Bergmann, Greg Minear, Andrea Kugi, Georg Stacher

Proceedings of the Visualization in Biomedical Computing 1994, 1994