Biomedical subjects

Carsten Kübler

Publications and source records attributed to Carsten Kübler.

3 recordsLinked to original sources

PubMed2002

A new, accurate and easy to implement camera and video projector model.

In 2000, the Institute for Process Control and Robotics/Universität Karlsruhe (TH) has developed a prototype system for projector based augmented reality consisting of a state-of-the-art PC, two CCD cameras and a video projector which is used for registration and projection of surgical planning data. Tracking, registration as well as projection require an accurate calibration process for cameras and video projectors. We have developed a new, flexible, plain and easy to implement model, which can both be used for calibration of cameras and video projectors.

Calibration↗

PubMed2002

Realtime textured 3D-models for medical applications.

Realistic visualisation becomes more and more important in medicine. Whenever a patient individual 3D-model was generated the aim is to visualise the model as realistic as possible. We use 3D-models in our diagnostic and therapeutic tools for intraoperative visualisation of e.g. CT-scans. Most medical tools uses surface-rendering or volume-rendering for virtual visualisation. The coloration of a visualised model is normally done by using a convenient colour for each surface resp. volume. Our approach for 3D-models generated from motion in image series (e.g. videoendoscopes) is to add textures to the 3D-model. The main problem is, to handle the huge amount of videoimage-data (20Mb/sec.) and render the model in realtime.

Computer Simulation↗

PubMed2002

3D structure from endoscopic images.

Endoscopy is an important procedure for the diagnostic and therapy of various pathologies. In 2000, the Institute for Process Control and Robotics/Universität Karlsruhe (TH) has developed a basic framework for reconstructing 3D models from image sequences. The framework is able to realise automatic navigation for new colonoscopes with own driving system and on the other hand to offer a virtual 3D endoscopic view during bad visibility conditions caused by e.g. abrupt bleeding. This method generates a 3D-model intraoperatively compared to preoperatively generated 3D-models in virtual endoscopy.

Colonography, Computed Tomographic↗