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Article
The effect of distal tibial rotation during high tibial osteotomy on the contact pressures in the knee and ankle joints
Intraoperative fracture of the lateral cortex fractures of the tibia is a potential complication of high tibial osteotomy (HTO), which may result in inadequate rotational alignment of the distal tibia. Our ai...
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Chapter
Segmentierung von Knochenfragmenten in typischen Kontaktsituationen
Für die Visualisierung, Korrekturplanung und Navigation von Frakturen sind präzise Computermodelle der Knochenfragmente erforderlich. Zwar stellt die Segmentierung knöcherner Strukturen aus CT-Daten im Allgeme...
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Chapter and Conference Paper
Complete Generic Camera Calibration and Modeling Using Spline Surfaces
The generic camera model considered in this work can be regarded as a map** between image pixels and viewing rays. These rays are independent of each other which prohibits a standard parametric approach for ...
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Chapter and Conference Paper
Shape (Self-)Similarity and Dissimilarity Rating for Segmentation and Matching
Similarities and dissimilarities can be found in many natural as well as man-made structures and are an important source of information, e.g., for isolating defects or pathological regions, and for finding uni...
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Book
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Chapter and Conference Paper
Using the Shadow as a Single Feature for Real-Time Monocular Vehicle Pose Determination
In this work we propose a way to detect vehicles in monocular camera images and determine their position and orientation on the ground plane relative to the camera. The camera does not need to be stationary wh...
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Chapter
A Unified Notation for Serial, Parallel and Hybrid Kinematic Structures
In this contribution we present a uniform notation for any kind of kinematic structure ranging from serial robots and parallel robots to hybrid kinematic structures as well as from multi-finger grippers to the...
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Chapter and Conference Paper
A Locally Deformable Statistical Shape Model
Statistical shape models are one of the most powerful methods in medical image segmentation problems. However, if the task is to segment complex structures, they are often too constrained to capture the full a...
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Chapter
Manipulation Primitives — A Universal Interface between Sensor-Based Motion Control and Robot Programming
This paper introduces a generic framework for sensor-based robot motion control. The key contribution is the introduction of an adaptive selection matrix for sensor-based hybrid switched-system control. The ov...
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Chapter
Assembly Planning and Task Planning — Two Prerequisites for Automated Robot Programming
This contribution aims to present a complete process chain starting from the initial specification of assembly tasks via assembly sequence planning, all the way through task planning and finally task execution...
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Chapter
A Middleware for High-Speed Distributed Real-Time Robotic Applications
The development of modular and distributed real-time software systems — as they are common in the field of research and development of robotic manipulation control systems — can be greatly simplified by approp...
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Chapter and Conference Paper
A Model-Based Approach to the Segmentation of Nasal Cavity and Paranasal Sinus Boundaries
We present a model-driven approach to the segmentation of nasal cavity and paranasal sinus boundaries. Based on computed tomography data of a patients head, our approach aims to extract the border that separat...
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Book
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Chapter
Efficient Parallel Random Sample Matching for Pose Estimation, Localization, and Related Problems
This paper introduces a parallel variant of the Random Sample Matching (RANSAM) approach leading to a very time and memory efficient enhancement of the traditional Random Sample Consensus (RANSAC). This improv...
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Chapter
Path Planning for Robot-Guided Endoscopes in Deformable Environments
In this paper we present novel concepts that allow to plan time optimal paths under velocity constraints for an endoscopic robot acting in deformable environments. These environments are described by means of ...
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Chapter
Automated Robot Assisted Fracture Reduction
The preferred treatment of femoral shaft fractures nowadays is the minimally invasive technique of intramedullary nailing. However, besides its advantages, this technique also has a number of drawbacks like th...
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Article
Analysis of manual segmentation in paranasal CT images
Manual segmentation is often used for evaluation of automatic or semi-automatic segmentation. The purpose of this paper is to describe the inter and intraindividual variability, the dubiety of manual segmentat...
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Article
Pairwise Matching of 3D Fragments Using Cluster Trees
We propose a novel and efficient surface matching approach for reassembling broken solids as well as for matching assembly components using cluster trees of oriented points. The method rapidly scans through th...
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Chapter and Conference Paper
3D Body Scanning in a Mirror Cabinet
Body scanners offer significant potential for use in many applications like clothing industry, orthopedy, surgery, healthcare, monument conservation, art, as well as film- and computer game industry. In order ...
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Chapter and Conference Paper
Low-Cost Laser Range Scanner and Fast Surface Registration Approach
In the last twenty years many approaches for contact-free measurement techniques for object surfaces and approaches for 3d object reconstruction have been proposed; but often they still require complex and exp...
