DJI Developer Challenge 2016!

Aug 09, 2016Posted by Manuel Hofer

Our team, the Graz Griffins, is successfully participating in this years DJI Developer Challenge! Starting from more than 100 teams worldwide, we made it under the last 10 and into the final competition! This competition will take place in Rome, NY in the United States of America from the 27th to the 29th of August. The grand prize are 100,000 US dollars, which will be awarded to the best team at the end of the challenge. Below you can see our team picture and our latest video submissions. Stay tuned for more updates!

Back: Jesús Pestana, Manuel Hofer, Alex Isop, Friedrich Fraundorfer, Banglei Guan
Front: Daniel Muschik, Felix Egger, Michael Maurer

Deliverable 01: AprilTag Detection and Tracking:

Deliverable 02: OnlineSfM and Trajectory Planning:

CVPR Code Released!

May 19, 2016Posted by Christian Mostegel

We released our code of our CVPR paper, with which you can automatically generate training data for confidence learning in stereo vision. You can find it in the "Software" section.

CVPR and CVPRW paper accepted!

May 09, 2016Posted by Christian Mostegel

We are happy to announce that two of our papers got accepted to CVPR this year. One paper (Using Self-Contradiction to Learn Confidence Measures in Stereo Vision) will be presented at the main conference and a second paper (UAV-based Autonomous Image Acquisition with Multi-View Stereo Quality Assurance by Confidence Prediction) at the CVPR workshop on Computer Vision in Vehicle Technology.

Journal paper accepted!

Apr 05, 2016Posted by Manuel Hofer

We are happy to announce that our journal paper got accepted at Computer Vision and Image Understanding (CVIU). More details can be found in the Publications section.

DJI Developer Challenge 2016!

Mar 29, 2016Posted by Manuel Hofer


Our team, the Graz Griffins, has qualified to participate in the 2016 DJI Developer Challenge (see Challengers >> 1st round), among only 25 teams worldwide. The team consists of members from the IRT and the ICG, both institutes at the TU Graz. We will now receive our Developer Package, which includes the DJI Matrice M100 quadcopter equipped with the impressive DJI Guidance multipurpose sensing system, a Gimbal Zenmuse X3 camera and a DJI Manifold onboard computer!

Our proposal is to make a team consisting of five members, 2-3 of which are undergraduate students, with 2-3 PhD Students from the ICG that are already knowledgeable in the required topics as support. We are currently looking for Bachelor and Master students willing to join our team. As a student, you will develop software to make a (real) quadcopter autonomously take-off, land on static and moving platforms, fly, avoid obstacles and look for survivors in a (real) recreation of a disaster scenario.

DJI is a world renowned manufacturer of drones, or small Unmanned Aerial Vehicles (UAV). This year, DJI’s challenge will tackle a search and rescue scenario using drone technology. To put into focus the importance of this years DJI's Challenge consider the following facts. Unfortunately it is a common characteristic of real disaster scenarios that the survival probability rapidly drops when the victims cannot be located and rescued shortly after the accident takes place. For instance, considering snow avalanches, if a victim can be rescued within 18 minutes, the survival rate is greater than 90%; afterwards the survival rate rapidly drops to around 25% if the victim is rescued within 40 to 80 minutes after the accident.

If you are interested to participate, please contact us via email: Friedrich Fraundorfer and Jesus Pestana.

VISAPP'16: Best Paper Award!

Mar 03, 2016Posted by Thomas Holzmann

We won the Best Paper Award for our paper "Visual Odometry Based on Lines", which has been presented at this years VISAPP.

Direct Stereo Visual Odometry Based on Lines

Jan 22, 2016Posted by Thomas Holzmann

Our new paper Direct Stereo Visual Odometry Based on Lines is now online, and can be found in the Publications section. It will be presented at this years VISAPP in Rome.

Line3D - Source code now online!

Aug 20, 2015Posted by Manuel Hofer

Our new open source algorithm for multi view stereo with line segments (Line3D) is now online. The corresponding paper will be presented at this years GCPR in Aachen. Check it out here!

ICRA paper and dataset online

Jul 01, 2015Posted by Manuel Hofer

Our ICRA 2015 paper and the corresponding dataset are now online and can be found in the Publications section.

Camera Calibration Software released!

Nov 13, 2014Posted by Michael Maurer

We released our camera calibration software. You can find it in the "Software" section.

BMVC'14 and 3DV'14 papers accepted!

Sep 12, 2014Posted by Manuel Hofer

3DV 2014  Our papers "Semi-Global 3D Line Modeling for Incremental Structure-from-Motion" and "Improving Sparse 3D Models for Man-Made Environments using Line-Based 3D Reconstruction" have been accepted for publication at this years BMVC and 3DV respectively. You can find both papers shortly in the "Publications" section.

Best paper AAPR'14

May 26, 2014Posted by Christof Hoppe


Our new paper "Geometric Abstraction from Noisy Image-Based 3D Reconstructions" has been elected as the best paper at the AAPR Workshop 2014. Congratulations Thomas! The paper deals with the semantically meaningful simplification of point clouds obtained from Structure-from-Motion pipelines. The paper can be found on

ICRA'14: Active Monocular Localization

Feb 14, 2014Posted by Christian Mostegel

ICRA 2014  ICRA 2014 

We are proud to present the first fully functional system capable of autonomous explorative navigation only using a single passive camera as exteroceptive sensor. Using a low-cost quadrocopter, the proposed system can safely navigate through challenging, unknown, GPS-denied environments without losing the visual localization. Our work will be published in this year's ICRA proceedings, but a preprint is already available here. A demonstration of the capabilities of the proposed system can be found in this video.


Jan 01, 2014Posted by Michael Maurer


We are pleased to announce the start of our new project FreeLine. More details can be found in the funding section.

BMVC'13: All papers accepted!

July 11, 2013Posted by Manuel Hofer


We are pleased to announce that all of our submissions for this years British Machine Vision Conference in Bristol, UK have been accepted (2 orals, 1 poster). The full papers will be available in the publications section shortly.

3DIMPVT'12: Improved Visual Landmarks

November 20, 2012Posted by Andreas Wendel

3DIMPVT 2012 

In our most recent paper presented at this year's 3DIMPVT conference, we've combined previous approaches to monocular localization and accurate geo-registration to generate metrically correct visual landmarks. By adding our novel incremental feature update approach we're now able to localize an aerial vehicle relative to a given point cloud at a rate of 4 fps, with an accuracy comparable to differential GPS. Sounds interesting? Have a look at the paper!

Additionally, we would like to welcome our new team member Manuel Hofer, who has just graduated last week. Congratulations and welcome!

BMVC'12: Best Demo Award

September 10, 2012Posted by Christof Hoppe


We won the Best Demo Award for our paper "Online Feedback for Structure-from-Motion Image Acquisition", which has been presented on the BMVC 2012. If you are interested, you'll find the video and the paper here.

BMVC'12: Online SfM and Feedback

July 31, 2012Posted by Christof Hoppe

BMVC 2012 

Most people who are working in the field of Structure-from-Motion know this problem: You acquired hundreds of high-resolution still-images, put them into your SfM pipline but the result is not as expected due to missing images. Therefore, we present on this year's BMVC a method that makes your life easier. Our method solves the SfM problem for high-resolution still-images online and provides feedback about the reconstruction quality on site. A video shows our system. If you are interested in how it works, you find the paper here.

CVPR'12: "Dense Reconstruction On-the-Fly"

April 13, 2012Posted by Andreas Wendel

CVPR 2012 

We're proud to present the first system for dense reconstruction on-the-fly: A distributed pipeline which allows to perform purely visual tracking, as well as spare and volumetric dense reconstruction in real-time, using mobile image acquisition platforms such as quad-rotor helicopters or tablet computers. Our work is going to be published in this year's CVPR proceedings; but you can already get a preview by reading the paper and having a look at the video!

Construct Project in the News

March 30, 2012Posted by Andreas Wendel

Construct project 

Siemens Innovation News features an article about our CONSTRUCT project. We're currently developing this system for monitoring construction sites in collaboration with Siemens; check out our project page for further information. Moreover, we would like to congratulate our Master student Mario Katusic for completing his thesis!

ICRA Video demostrates our 3D capabilities

February 13, 2012Posted by Andreas Wendel

Graz Clocktower 

Our contribution to ICRA 2012 in Minnesota (USA) highlights our 3D reconstruction workflow, from image acquisition to georeferencing. Please have a look at our new video, and don't forget to turn on the sound! Most algorithms used are discussed in detail by papers available on our webpage. See our publications for further information.

January brings 4 new publications

January 30, 2012Posted by Andreas Wendel

City Modeling 

January 2012 brings four new publications in quite diverse fields: Visual localization, network planning for 3D reconstruction, airborne visual inspection as required for instance during power pylon inspection, and rapid city model approximation. Moreover, we would like to congratulate our Master student Thomas Kempter for completing his thesis!

Two additional awards!

October 10, 2011Posted by Andreas Wendel

ICVSS Award 

We're proud to announce that our team has won two additional awards this year:

Demo at European Forum Alpbach

August 29, 2011Posted by Andreas Wendel

Alpbach 2011 

Thanks to the invitation of the Austrian Federal Ministry for Transport, Innovation and Technology (bmvit) we were able to give a technical demonstration of our projects PEGASUS and CONSTRUCT at European Forum Alpbach 2011. Please find some aerial images of Alpbach, the Congress Center Alpbach, and some of our visitors in our media section.

Several new publications available

April 21, 2011Posted by Andreas Wendel


Our webpage has been updated with several recent publications, including papers on ICRA, 3DPVT, and the CVPR-WS on Aerial Video Processing. Please also check out our picture and video gallery containing quad- and octo-rotor micro aerial vehicles.

Pegasus wins FIT-IT Award

July 7, 2010Posted by Andreas Wendel

FIT-IT Award 

We're glad to announce that Pegasus has won the FIT-IT Award of the Austrian Research Promotion Agency FFG in the category "Visual Computing", meaning that our proposal has got the best ratings in the 2009 reviews. Since the award ceremony, which took place in late June, we've been the subject of several press releases. You can find copies and links in our media section.