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Research Projects (2011)

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Maurer Michael Poier Georg Saffari Amir Schulter Samuel Seichter Hartmut Voglreiter Philip Zeisl Bernhard Lex Alexander Armagan Anil Arth Clemens Barakonyi István Bauer Joachim Beichel Reinhard Bischof Horst Boechat Pedro Bornik Alexander Reitinger Bernhard Bauer Christian Gruber Lukas Kainz Bernhard Pirchheim Christian Daftry Shreyansh Wagner Daniel Kalkofen Denis Dokter Mark Donoser Michael Elbischger Pierre Ferstl David Fleck Philipp Fraundorfer Friedrich Reitmayr Gerhard Geymayer Thomas Godec Martin Munda Gottfried Grabner Markus Grubert Jens Hammernik Kerstin Hartl Andreas Daniel Hauswiesner Stefan Riemenschneider Hayko Grabner Helmut Hirzer Martin Hofer Manuel Holzmann Thomas Hoppe Christof Irschara Arnold Isop Werner Alexander Jampour Mahdi Newman Joseph Junghanns Sebastian Khan Inayatullah Kalkusch Michael Karner Konrad Kenzel Michael Kerbl Bernhard Khlebnikov Rostislav Klatzer Teresa Klaus Andreas Klopschitz Manfred Kluckner Stefan Knöbelreiter Patrick Köstinger Martin Kontschieder Peter Pirker Katrin Kruijff Ernst Langlotz Tobias Langs Georg Leberl Franz Lee Felix Leistner Christian Leitner Raimund Lenz Martin Lepetit Vincent Mauthner Thomas Meixner Philipp Mendez Erick Grabner Michael Heber Markus Mohr Peter Mostegel Christian Mühl Judith Mulloni Alessandro Ober Sandra Oberweger Markus Opitz Michael Pacher Georg Partl Christian Pflugfelder Roman Pinz Axel Roth Peter M. Pock Thomas Poier Georg Possegger Horst Pestana Puerta Jesús Puff Werner Pan Qi Ram Surinder Ranftl René Grasset Raphael Recky Michal Regenbrecht Holger Reinbacher Christian Riegler Gernot Rüther Matthias Rumpler Markus Santner Jakob Sareika Markus Schall Gerhard Schenk Fabian Schmalstieg Dieter Schulz Hans-Jörg Shekhovtsov Alexander Sormann Mario Steinberger Markus Stern Darko Sternig Sabine Storer Markus Straka Matthias Streit Marc Tatzgern Markus Nguyen Thanh Nguyen Thuy Trobin Werner Unger Markus Uray Martina Urschler Martin Veas Eduardo Ventura Jonathan Waldner Manuela Waltner Georg Wendel Andreas Werlberger Manuel Winter Martin Wohlhart Paul Zach Christopher Zebedin Lukas Zollmann Stefanie
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3D Computer Vision 3D reconstruction Aerial Vision Augmented Reality Augmented Video Best Paper Award best paper award Biometrics C++ Caleydo Classification Computational Photography Computer Graphics Computer Vision Computer Vison Convex Optimization Coordinate transformations Dataset acquisition detection Discrete Optimization Experimental Robotics face Fingerprint Forensic Image Analysis Frozen Georeferencing GPU GUI HOG Human Computer Interaction Human Machine Interaction Image Labelling Image restoration Industrial Applications Information Visualization integral imaging Interaction Interaction Design Light estimation Machine Learning Medical computer vision Medical Image Analysis Medical Visualization Mixed Reality Mobile computing Mobile phone Model Multi-Display Environments Multiple Perspectives Multithreading Non-convex optimization Object detection Object recognition Object reconstruction Object Tracking Offline On-Line Learning Paid Thesis Perception Photorealism Pose Estimation Procedural Modeling Robotics Segmentation Shape analysis shape from focus Simulation SLAM Software Projects Solar Physics Structure from Motion Surveillance SVM Symmetry Tracking Fusion Tracking, Action Recognition User Interfaces Variational Methods View Management Virtual Copy Virtual Reality Virtual reality and augmented reality Visual Tracking Visualization
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CONSTRUCT: Construction Site Monitoring and Change Detection using UAVs

The goal of the project is to develop methods for modeling and surveying large construction sites. The project will make use of unmanned aerial vehicles and existing stationary or pan-tilt zoom cameras at the construction site. The goal is to provide accurate 3D models on a regular basis of the whole site. This will generate a 4D data set (3D+time). This data can then be used for documentation, visualization (we will use a mobile augmented reality system to overlay e.g. the plan or a model of the building) as well as measurement (e.g., how much material has been transported). From a scientific point of view we will have to solve following tasks:

  • Dense 3D reconstruction from highly overlapping data, we will use variational methods implemented on the GPU.
  • Accurate registration of subsequent models over time. Since the 3D reconstruction is changing (per definition) the method needs to handle this. This is an instance of the highly relevant 3D model updating problem.
  • Integration of multiple camera sources. Using the 3D model and additional cameras poses the problem of localization of the additional cameras with respect to the 3D model which is again an instance the registration problem.
  • Development of a handheld AR platform for visualization. In order to use AR technology the pose of the platform with respect to the model and the reconstruction needs to be determined.
2011 2014
HOLISTIC: Holistic Aerial Scene Understanding Using Highly Redundant Data

The aim of this research project is holistic scene understanding in large aerial datasets, consisting of thousands of massively redundant high-resolution images. Holistic scene understanding is one of the major problems in computer vision and photogrammetry and has recently got a lot of attention. The problem of holistic image understanding includes two fundamental tasks: 3D scene reconstruction and semantic interpretation of the imaged content at the level of pixels. The tight interaction between semantic classification and 3D reconstruction is often ignored by state of the art aerial image processing workflows, due to the lack of computational power, the absence of efficient algorithms or the enormous effort of manual intervention. However, these tasks are mutually informative and should be solved jointly as a correct class labelling is a valuable source of information for reconstruction, and 3D information can help to improve the semantic interpretation. For instance, a correct classification is a valuable source of information for reconstruction in regions where dense matching methods fail (e.g. sheets of water and reflecting windows / facades), and 3D information can be used as a prior to improve classification (e.g. building and road detection). The high resolution and redundancy due to large overlaps of aerial images requires massive processing power which will be handled by taking advantage of graphic processing units that have proved to give a significant speedup compared to single core machines. In particular, we will focus on algorithms based on variational methods, which provide a high degree of parallelization capability. In order to reduce cost-intensive manual interaction, we further will exploit publicly available user-data from the Internet to improve both interpretation and 3D reconstruction.

In the HOLISTIC project we will provide a flexible framework for scene classification and 3D reconstruction from aerial images that outperforms current state-of-the art and delivers interpretable models at highest possible accuracy. To achieve this goal, we will focus our attention on the following two research subjects: (i) the joint optimization of geometry and semantic classification from aerial images in a unified framework, and (ii) the exploitation of existing geographic information systems and web data to support these two sub-tasks. In addition, we will use web-based standard to efficiently represent the obtained results for fast modeling and data parsing.

2011 2014

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