TY - JOUR A1 - Fieselmann, Andreas A1 - Lautenschläger, Stefan A1 - Deinzer, Frank A1 - John, Matthias A1 - Poppe, Björn T1 - Esophagus Segmentation by Spatially-Constrained Shape Interpolation JF - Bildverarbeitung für die Medizin 2008, Algorithmen - Systeme - Anwendungen Y1 - 2008 UR - http://ftp.informatik.rwth-aachen.de/Publications/CEUR-WS/Vol-347/p247.pdf SP - 247 EP - 251 ER - TY - JOUR A1 - Platzer, Esther A1 - Deinzer, Frank A1 - Paulus, Dietrich A1 - Denzler, Joachim T1 - 3D Blood Flow Visualization from 2D Angiograms JF - Bildverarbeitung für die Medizin 2008, Algorithmen - Systeme - Anwendungen Y1 - 2008 SP - 288 EP - 292 ER - TY - CHAP A1 - Kubias, Alexander A1 - Deinzer, Frank A1 - Feldmann, Tobias A1 - Paulus, Dietrich A1 - Schreiber, Bernd A1 - Brunner, Thomas T1 - 2D/3D Image Registration on the GPU T2 - Proceedings of the 7th Open German/Russian Workshop on Pattern Recognition and Image Understanding Y1 - 2007 ER - TY - CHAP A1 - Kubias, Alexander A1 - Deinzer, Frank A1 - Feldmann, Tobias A1 - Paulus, Dietrich T1 - Extended Global Optimization Strategy for Rigid 2D/3D Image Registration T2 - Computer Analysis of Images and Patterns, 12th International Conference, CAIP 2007 Y1 - 2007 VL - 4673 SP - 759 EP - 767 ER - TY - CHAP A1 - Kubias, Alexander A1 - Deinzer, Frank A1 - Kreiser, Matthias A1 - Paulus, Dietrich T1 - Efficient Computation of Histograms on the GPU T2 - 23rd Spring Conference on Computer Graphics Y1 - 2007 UR - https://dl.acm.org/doi/pdf/10.1145/2614348.2614377 ER - TY - JOUR A1 - Werner, Max A1 - Bullmann, Markus A1 - Fetzer, Toni A1 - Deinzer, Frank T1 - Unified Probabilistic and Similarity-Based Position Estimation from Radio Observations JF - Sensors N2 - We propose a modeling approach for position estimation based on the observed radio propagation in an environment. The approach is purely similarity-based and therefore free of explicit physical assumptions. What distinguishes it from classical related methods are probabilistic position estimates. Instead of just providing a point estimate for a given signal sequence, our model returns the distribution of possible positions as continuous probability density function, which allows for appropriate integration into recursive state estimation systems. The estimation procedure starts by using a kernel to compare incoming data with reference recordings from known positions. Based on the obtained similarities, weights are assigned to the reference positions. An arbitrarily chosen density estimation method is then applied given this assignment. Thus, a continuous representation of the distribution of possible positions in the environment is provided. We apply the solution in a Particle Filter (PF) system for smartphone-based indoor localization. The approach is tested both with radio signal strength (RSS) measurements (Wi-Fi and Bluetooth Low Energy RSSI) and round-trip time (RTT) measurements, given by Wi-Fi Fine Timing Measurement. Compared to distance-based models, which are dedicated to the specific physical properties of each measurement type, our similarity-based model achieved overall higher accuracy at tracking pedestrians under realistic conditions. Since it does not explicitly consider the physics of radio propagation, the proposed model has also been shown to work flexibly with either RSS or RTT observations. Y1 - 2025 U6 - https://doi.org/https://doi.org/10.3390/s25134092 SN - 1424-8220 VL - 25 IS - 13 PB - MDPI AG ER - TY - CHAP A1 - Werner, Max A1 - Bullmann, Markus A1 - Fetzer, Toni A1 - Meißner, Pascal A1 - Deinzer, Frank T1 - Interpolation of Position Estimates for Radio Fingerprinting using Gaussian Process Regression T2 - 2025 International Conference on Indoor Positioning and Indoor Navigation (IPIN) Y1 - 2025 U6 - https://doi.org/10.1109/IPIN66788.2025.11213294 SP - 1 EP - 6 PB - IEEE ER - TY - CHAP A1 - Köping, Lukas A1 - Mühsam, Thomas A1 - Ofenberg, Christian A1 - Czech, Bernhard A1 - Bernard, Michael A1 - Schmer, Jens A1 - Deinzer, Frank T1 - Indoor Naviagtion Using Step and Turn Detection Together With Floor Map Information T2 - Proceedings of the 1st International Workshop on Uncertainty in Ambient Intelligence Y1 - 2013 ER - TY - CHAP A1 - Huffstadt, Karsten A1 - Fetzer, Toni A1 - Petry, Christian A1 - Deinzer, Frank T1 - 3D Interaction Design: Increasing the stimulus-response correspondence by using stereoscopic vision T2 - Proceedings of the 11th IEEE International Conference on Automatic Face and Gesture Recognition Conference and Workshops N2 - This paper presents a hand-based interaction approach for grabbing and manipulating virtual objects within immersive virtual environments. Considering the stimulus-response of humans, interacting with objects is easier if depth information is provided by stereoscopic vision. However, most people are used to work in monoscopic virtual environments. Therefore, we propose a case study, to analyze if an interaction approach using stereoscopic vision, compared to a conventional monoscopic vision, results in a higher user acceptance and stimulus-response correspondence. Our interaction approach is based on a robust and fast running 3D hand- and head-tracking provided by Microsoft's Kinect. We present a simple non-collision-based method for grabbing and manipulating objects within a 3D virtual environment. By tracking the head, the user is able to move within the environment and interact depending on his current position. The use of stereoscopic vision allows a natural and instinctive hand interaction with the augmented object. Finally, the experimental results and studies show how the use of stereoscopic vision improves the mental mapping and thus the user acceptance and stimulus-response correspondence in consideration of using the here presented interaction approach. Y1 - 2015 U6 - https://doi.org/10.1109/FG.2015.7163120 VL - 1 SP - 1 EP - 6 ER - TY - CHAP A1 - Fetzer, T. A1 - Ebner, F. A1 - Köping, L. A1 - Grzegorzek, M. A1 - Deinzer, Frank T1 - Recovering From Sample Impoverishment in Context of Indoor Localisation T2 - International Conference on Indoor Positioning and Indoor Navigation (IPIN 2017) Y1 - 2017 UR - https://ieeexplore.ieee.org/iel7/8106926/8115856/08115863.pdf SP - 1 EP - 8 ER - TY - CHAP A1 - Köping, Lukas A1 - Grzegorzek, Marcin A1 - Deinzer, Frank A1 - Bobek, Szymon A1 - Slazynski, Mateusz A1 - Nalepa, Grzegorz T1 - Improving indoor localization by user feedback T2 - 18th International Conference on Information Fusion (Fusion) Y1 - 2015 UR - https://ieeexplore.ieee.org/iel7/7229502/7266535/07266675.pdf SP - 1053 EP - 1060 ER - TY - CHAP A1 - Ebner, F. A1 - Fetzer, T. A1 - Deinzer, Frank A1 - Grzegorzek, M. T1 - On Prior Navigation Knowledge in Multi Sensor Indoor Localisation T2 - International Conference on Information Fusion (FUSION 2016) Y1 - 2016 UR - https://www.researchgate.net/profile/Toni-Fetzer/publication/306118756_On_Prior_Navigation_Knowledge_in_Multi_Sensor_Indoor_Localisation/links/57da7d8508aeea195932334f/On-Prior-Navigation-Knowledge-in-Multi-Sensor-Indoor-Localisation.pdf ER - TY - CHAP A1 - Fetzer, T. A1 - Ebner, F. A1 - Köping, L. A1 - Grzegorzek, M. A1 - Deinzer, Frank T1 - On Monte Carlo Smoothing in Multi Sensor Indoor Localisation T2 - International Conference on Indoor Positioning and Indoor Navigation (IPIN 2016) Y1 - 2016 UR - https://ieeexplore.ieee.org/iel7/7738315/7743575/07743670.pdf ER - TY - JOUR A1 - Ebner, Markus A1 - Fetzer, Toni A1 - Bullmann, Markus A1 - Deinzer, Frank A1 - Grzegorzek, Marcin T1 - Recognition of Typical Locomotion Activities Based on the Sensor Data of a Smartphone in Pocket or Hand JF - Sensors Y1 - 2020 U6 - https://doi.org/10.3390/s20226559 SN - 1424-8220 VL - 20 IS - 22 ER - TY - CHAP A1 - Fetzer, Toni A1 - Deinzer, Frank A1 - Koping, Lukas A1 - Grzegorzek, Marcin T1 - Statistical indoor localization using fusion of depth-images and step detection T2 - International Conference on Indoor Positioning and Indoor Navigation (IPIN 2014) Y1 - 2014 U6 - https://doi.org/10.1109/IPIN.2014.7275509 SP - 407 EP - 415 ER - TY - JOUR A1 - Deinzer, Frank A1 - Fetzer, Toni T1 - Die Mischung macht’s: Mit KI und Augmented Reality die Welt immersiv erkunden JF - Transfer – Das Steinbeis-Magazin Y1 - 2021 VL - 2021 IS - 3 SP - 39 EP - 41 ER - TY - JOUR A1 - Prappacher, Nico A1 - Bullmann, Markus A1 - Bohn, Gunther A1 - Deinzer, Frank A1 - Linke, Andreas T1 - Defect Detection on Rolling Element Surface Scans Using Neural Image Segmentation JF - Applied Sciences Y1 - 2020 U6 - https://doi.org/10.3390/app10093290 SN - 2076-3417 VL - 10 IS - 9 ER - TY - JOUR A1 - Deinzer, Frank A1 - Derichs, Christian A1 - Denzler, Joachim A1 - Niemann, Heinrich T1 - A Framework for Actively Selecting Viewpoints in Object Recognition JF - International Journal of Pattern Recognition and Artificial Intelligence Y1 - 2009 U6 - https://doi.org/10.1142/S0218001409007351 VL - 23 IS - 4 SP - 765 EP - 799 ER - TY - CHAP A1 - Bullmann, Markus A1 - Fetzer, Toni A1 - Ebner, Markus A1 - Kastner, Steffen A1 - Deinzer, Frank A1 - Grzegorzek, Marcin T1 - Data Driven Sensor Model for Wi-Fi Fine Timing Measurement T2 - International Conference on Indoor Positioning and Indoor Navigation (IPIN 2022) Y1 - 2022 UR - https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=9918111 ER - TY - CHAP A1 - Ebner, Markus A1 - Fetzer, Toni A1 - Bullmann, Markus A1 - Kastner, Steffen A1 - Deinzer, Frank A1 - Grzegorzek, Marcin T1 - PIPF: Proposal-Interpolating Particle Filter T2 - International Conference on Indoor Positioning and Indoor Navigation (IPIN 2022) Y1 - 2022 UR - https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=9918102 ER - TY - JOUR A1 - Kastner, Steffen A1 - Ebner, Markus A1 - Bullmann, Markus A1 - Fetzer, Toni A1 - Deinzer, Frank A1 - Grzegorzek, Marcin T1 - Magnetic Signature Sensor Model for Accurate Short-Distance Localization JF - 2022 IEEE Sensors Y1 - 2022 U6 - https://doi.org/10.1109/SENSORS52175.2022.9967176 SP - 1 EP - 4 ER - TY - JOUR A1 - Fetzer, Toni A1 - Maier, Julian A1 - Ebner, Markus A1 - Bullmann, Markus A1 - Deinzer, Frank T1 - Digitales Spaghetti-Diagramm zur Laufweganalyse JF - wt Werkstattstechnik online Y1 - 2022 VL - 112 IS - 10/2022 SP - 727 EP - 731 ER - TY - CHAP A1 - Fetzer, Toni A1 - Bullmann, Markus A1 - Kastner, Steffen A1 - Deinzer, Frank A1 - Grzegorzek, Marcin T1 - Advancing Smartphone-based Indoor Positioning through Particle Distribution Optimization T2 - 2024 27th International Conference on Information Fusion (FUSION) Y1 - 2024 U6 - https://doi.org/https://doi.org/10.23919/FUSION59988.2024.10706408 SP - 1 EP - 8 PB - IEEE ER - TY - CHAP A1 - Kastner, Steffen A1 - Bullmann, Markus A1 - Ebner, Markus A1 - Fetzer, Toni A1 - Deinzer, Frank A1 - Grzegorzek, Marcin T1 - Refinement of Sparsely Tagged Ground Truth Paths Using PDR and Particle Filter Smoothing T2 - 2024 14th International Conference on Indoor Positioning and Indoor Navigation (IPIN) Y1 - 2024 U6 - https://doi.org/https://doi.org/10.1109/IPIN62893.2024.10786186 SP - 1 EP - 6 PB - IEEE ER - TY - CHAP A1 - Kastner, Steffen A1 - Ebner, Markus A1 - Bullmann, Markus A1 - Fetzer, Toni A1 - Deinzer, Frank A1 - Grzegorzek, Marcin T1 - SIMUL: Synchronized IMU Dataset of Walking People at Six Body Locations T2 - 2023 13th International Conference on Indoor Positioning and Indoor Navigation (IPIN) Y1 - 2023 U6 - https://doi.org/https://doi.org/10.1109/IPIN57070.2023.10332491 SP - 1 EP - 7 PB - IEEE ER - TY - CHAP A1 - Fetzer, Toni A1 - Bullmann, Markus A1 - Ebner, Markus A1 - Kastner, Steffen A1 - Deinzer, Frank A1 - Grzegorzek, Marcin T1 - Interacting Multiple Model Particle Filter for Indoor Positioning Applications T2 - Proceedings of the 2023 International Technical Meeting of The Institute of Navigation Y1 - 2023 UR - https://www.researchgate.net/profile/Toni-Fetzer/publication/368485764_Interacting_Multiple_Model_Particle_Filter_for_Indoor_Positioning_Applications/links/63fa3e960d98a97717b975ae/Interacting-Multiple-Model-Particle-Filter-for-Indoor-Positioning-Applications.pdf ER - TY - JOUR A1 - Gielinger, Sebastian A1 - Bohn, Gunther A1 - Deinzer, Frank A1 - Linke, Andreas T1 - Investigation of an inline inspection method for the examination of cylinder-like specular surfaces using deflectometry JF - applied sciences N2 - An optical measuring method is presented, with which it is possible to measure and evaluate reflective cylindrical surfaces using a combination of deflectometry and subsequent reconstruction of the surface. The system is set up and tested on rolling elements of cylindrical roller bearings. However, it is not limited to this use case and can be applied to other cylindrical specular surfaces. The system distinguishes itself from existing test methods through the combination of high-resolution three-dimensional defect measurement with a very short recording time, and offers the possibility of introducing tolerance limits in the production of cylindrical specular surfaces. With this method, it is possible to record a defect with the dimensions of 1.3 mm by 1.8 mm within 5 s and to reconstruct the absolute depth. The resolution of the system is below 10 μm in both X- and Y-direction, and is therefore sufficiently accurate to detect typical surface defects such as scratches, dents, or deformations. To validate the measured values of the system, the results of an artificially generated 10.35 μm deep defect location were compared with those of a highly accurate mechanical stylus measurement. KW - automated optical inspection KW - roller bearing KW - line scan camera Y1 - 2023 UR - https://doi.org/10.3390/app12136449 SN - 2076-3417 VL - 12 IS - 13 ER - TY - CHAP A1 - Brückner, Marcel A1 - Deinzer, Frank A1 - Denzler, Joachim ED - Yang, Guang-Zhong ED - Hawkes, David ED - Rueckert, Daniel ED - Noble, Alison ED - Taylor, Chris T1 - Temporal Estimation of the 3d Guide-Wire Position Using 2d X-ray Images T2 - Medical Image Computing and Computer-Assisted Intervention – MICCAI 2009 Y1 - 2009 UR - https://www.academia.edu/download/42129005/Temporal_estimation_of_the_3d_guide-wire20160205-19144-1xamzsr.pdf SN - 978-3-642-04267-6 VL - 5761 SP - 386 EP - 393 ER - TY - CHAP A1 - Wacker, Matthias A1 - Deinzer, Frank ED - Yang, Guang-Zhong ED - Hawkes, David ED - Rueckert, Daniel ED - Noble, Alison ED - Taylor, Chris T1 - Automatic Robust Medical Image Registration Using a New Democratic Vector Optimization Approach with Multiple Measures T2 - Medical Image Computing and Computer-Assisted Intervention – MICCAI 2009 Y1 - 2009 SN - 978-3-642-04267-6 VL - 5761 SP - 590 EP - 597 ER - TY - CHAP A1 - Köping, Lukas A1 - Mühsam, Thomas A1 - Ofenberg, Christian A1 - Czech, Bernhard A1 - Bernard, Michael A1 - Schmer, Jens A1 - Deinzer, Frank T1 - Indoor Navigation Using Particle Filter and Sensor Fusion T2 - Proceedings of the European Navigation Conference 2012 Y1 - 2012 ER - TY - CHAP A1 - Köping, L. A1 - Grzegorzek, M. A1 - Deinzer, Frank T1 - Probabilistic Step and Turn Detection in Indoor Localisation T2 - 10th IET Data Fusion Target Tracking Conference (DF TT 2014): Algorithms and Applications Y1 - 2014 UR - https://www.researchgate.net/profile/Marcin-Grzegorzek/publication/264040695_Probabilistic_Step_and_Turn_Detection_in_Indoor_Localisation/links/0046353c9a4b9b1d53000000/Probabilistic-Step-and-Turn-Detection-in-Indoor-Localisation.pdf SP - 1 EP - 7 ER - TY - JOUR A1 - Serón, Francisco A1 - de Carvalho, Carlos Vaz A1 - Saul, Melanie A1 - Deinzer, Frank A1 - Guerrero, Roberto A1 - Parra, Juan Carlos A1 - Costa, Cristiano A1 - Rigo, Sandro T1 - Realidades Virtuales/Aumentadas para el Desarrollo Social: Experiencias Entre Europa y Latinoamerica Y1 - 2014 SN - 978-950-757-046-9 ER - TY - JOUR A1 - Köping, Lukas A1 - Mühsam, Thomas A1 - Ofenberg, Christian A1 - Czech, Bernhard A1 - Bernard, Michael A1 - Schmer, Jens A1 - Deinzer, Frank T1 - Indoor Navigation Using Particle Filter and Sensor Fusion JF - Annual of Navigation Y1 - 2012 UR - https://bibliotekanauki.pl/articles/320422.pdf VL - 19 IS - 2 SP - 31 EP - 40 ER - TY - JOUR A1 - Köping, Lukas A1 - Deinzer, Frank T1 - Realidades Virtuales/Aumentadas para el Desarrollo Social: Experiencias Entre Europa y Latinoamerica Y1 - 2014 SN - 978-950-757-046-9 ER -