Category Archives: News

Master Thesis Defense Ioanna Tziouvara

On the 14th December, Ioanna Tziouvara will defend her Master thesis: Integration of 3D tracking systems for Interaction in Spatial Augmented Reality. The defense is open for the public and guests are therefore invited to attend.

MSc Committee:
Chair, Full Professor: Prof. dr. E. Eisemann, Faculty of EEMCS, TU Delft
Daily Supervisor: Prof. dr. E. Eisemann, Faculty of EEMCS, TU Delft
External supervisor: ir. J. Verlinden, Faculty of IDE, TU Delft
Committee Member: Dr. ir. G. de Haan, Faculty of EEMCS, TU Delft

Date and time: 14 December 2012, 14:30

Location: van der Poelzaal (LB 01.220), Faculty of EEMCS, Mekelweg 4, Delft

Topic preview can be found at the project website.


Spatial Augmented Reality (SAR) has been a research field for more than a decade.  SAR uses digital projectors to augment virtual information on physical objects, which makes it non-invasive and can yield an immersive experience. SAR has shown to have potential in a variety of fields, like entertainment, medicine and industrial applications. Although the opportunities that accompany SAR are great, effort towards the interaction mechanisms is necessary.

In this thesis, a SAR system designed and developed to be applied in the field of Industrial Design Engineering is presented. More specifically, this work contains an approach to set the hardware to support SAR, else known as hardware calibration for SAR. Each hardware entity is calibrated with respect to a common “world” in order to achieve effective communication. This world is set to coincide with the graphics world, and this allows us to imagine being inside the 3D graphics world while the virtual content is rendered onto the scene’s objects. In order to identify the basic ingredients that enable interaction in SAR, a scheme is introduced to help with the analysis of related work. Based on this background knowledge and the newly inserted scheme, we designed the interaction components of our SAR system according to characteristics of our setting. The SAR system was designed to work in the peripersonal region. The user inserts input via a constructed IR tracked pen and a dynamic menu is used as interface to the system. Functionality such as selection, feedback and annotation is enabled for interacting with the SAR system. The system’s application is divided into two parts. The first part includes the use of the RGB-D camera and the IR tracker for the construction of a 3D scanner to produce a virtual model of an object through sampling, segmentation, and registration of sequential point clouds. In the second part, the result of the scanning process, which is a polygonal mesh of the scanned object, is added to the SAR system’s application that enables interaction with virtual models and the ground level of the world. These two parts of the SAR system application aim to support industrial designers in the scanning of a freshly made physical prototype, and enable the design of features on the corresponding virtual model by using the SAR system.

In order to identify the strong points and weaknesses of the current state of the SAR system application, we carried out a user evaluation. 21 students from the Faculty of Industrial Design Engineering evaluated the two parts of the system’s application. The results show that the SAR system is useful and that it has great potential in the field of Industrial Design Engineering. Nevertheless, there is still space for improvement and future work, in order to be fully applied in the field.

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New Full Professor Dr. Elmar Eisemann arrived

We are very happy to announce the arrival of our group’s new full professor, Prof.dr. Elmar Eisemann. Professor Eisemann joined the group at the beginning of October, and adapted rapidly to the his new environment. He has a strong academic background in graphics, photo-realistic rendering and stereovision rendering, opening up a variety of new possibilities for the CGV Group. Further information about Prof. Dr. Eisemann can be found on his website.


We are looking forward to tackling new challenges as a team under the leadership of Prof.dr. Eisemann!

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Recent M.Sc. Defences

At regular intervals, we will post updates concerning recent master thesis topics and outcomes.

We’ll begin with a description of the work done by Marnix Kraus, MSc. who completed his Master Thesis in the field of active multi-camera navigation in video surveillance systems, supervised by Gerwin de Haan. He designed and evaluated a prototype system for this purpose. His findings indicate that the presented system can enhance operator performance in surveillance control rooms that monitor vast and complex areas. The full thesis can be downloaded here. More information on research related to this topic can be found on the VRLAB project website.

In the game technology department, Rick de Ridder, MSc. worked on simulating urban area development for semantic game worlds for his Master Thesis. This work was supervised by Tim Tutenel and Rafael Bidarra. In his work, he expands a semantic world-generation prototype by introducing factors like resources, events and neighboring settlements in the generation process. It extends current techniques by adding more history and meaning to the procedurally generated cities. The full thesis can be found here and additional information is available on the related Game Technology project website.

Anne van Ee, Msc. developed new interaction schemes for the touch-based organization of patent collections in her thesis work. The thesis was supervised by Gerwin de Haan and it was carried out in co-operation with the European Patent Office. Anne based her work on earlier co-operative work with the European Patent Office and improved the organization system by introducing the Local Affine Multidimensional Projection (LAMP) technique to help the user while searching for patents. If you’re interested in this work, you can check out the full thesis here.

Renata Raidou. MSc. completed her thesis in the field of medical visualization as a Biomedical Engineer. In her work she successfully researched the planning and guidance of minimally invasive cement injection to combat the effects of aseptic loosening that occur after total hip replacement surgery. This work was supervised by Francois Malan and Charl P. Botha. Renata developed an integrated system for planning and guiding minimally invasive refixation. The thesis proposes new approaches to combine CT and fluoroscopy in pre-operative planning. She conducted an extensive review with domain experts to evaluate the system. Her full thesis can be found here.

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PhD defense Tim Tutenel

On the 17th December, Tim Tutenel will defend his PhD thesis: Semantic Game Worlds. The defense is open for the public and guests are therefore invited to attend. Before the actual defense, Tim will give a short introduction to the subject of his thesis (in Dutch), beginning at 12:00. After that, the defense (in English) will start at 12:30.

Committee: Rector Magnificus (TU Delft), Prof. dr. ir. F.W. Jansen (TU Delft), Dr. ir. R. Bidarra (TU Delft), Prof. dr. C.M. Jonker (TU Delft), Prof. dr. K. Coninx(Universiteit Hasselt), Prof. dr. J. Whitehead (University of California, Santa Cruz, USA), Dr. I.S. Mayer (TU Delft) and Dr. F.P.M. Dignum (Universiteit Utrecht).

Date and time: 17 December 2012, 12:30

Location: Senaatszaal (Aula)


The visual quality of game worlds increased massively in the last three decades. However, the closer game worlds depict reality, the more noticeable it is for gamers when objects do not behave accordingly. An important problem is that the data of a game world is often scattered across different components of the game engine. What lacks is a common semantic representation that can act as the glue between these components.

In this thesis we define semantic game worlds as game worlds that are populated with objects enriched with semantics. They offer game programmers a consistent representation that can be shared by game engine components. Moreover, this representation offers designers a way to moderate conflicts between procedural content generation techniques and it enables them to specify object behavior in a generic manner.

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Computer Graphics and Visualization Colloquium on Thursday, November 22

You are cordially invited to attend the next Computer Graphics and Visualization (CGV) Colloquium, which will be held on Thursday, November 22 at 15:45 in the Shannon Room, on the 10th floor of the EEMCS building.

The presentation programme is as follows:

  • Antony Löbker: Runtime procedural generation of roads using gameplay-based control
  • Roland van der Linden: Procedural Generation of Dungeons
  • Korijn van Golen: Anti-aliasing in Deferred Rendering

Presentations should usually aim for 22.5 minutes in total (approximately 17.5 minutes presentation + 5 minutes discussion).


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Computer Graphics Colloquium, October 18, 2012

You are cordially invited to attend the next Computer Graphics and Visualization (CGV) Colloquium, which will be held on Thursday, October 18 at 15:45 in the Shannon Room, on the 10th floor of the EEMCS building.

The presentation programme is as follows:

  • Berend Klein Haneveld: Challenges in interactive 3D registration
  • Sergio Barrientos Velasco: Visualization and interpretation of heterogeneous environmental sensor data
  • Bert Buchholz: Quantized Point-based Global Illumination

Presentations should usually aim for 22.5 minutes in total (approximately 17.5 minutes presentation + 5 minutes discussion).

All three the speakers are new additions to the CGV group, and so are their projects. Come all!


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PhD candidate Christian Kehl receives research poster award at International Supercomputing Conference 2012

Christian Kehl represented the Graphics Group at International Supercomputing Conference (ISC) 2012. ISC is one of the biggest conferences for High-Performance Computing, Grid-Computing and Large-Scale Computations. ISC’12 was held June 1721 at the Congress Center Hamburg.

At the conference Christian Kehl presented a poster on a new project on Interactive Simulation and Visualization of Large-Scale flooding scenarios, placed in the Large-Scale Simulation section. A total of 21 research posters were handed in. The award for best research paper was handed over by Stephan Olbrich, University of Hamburg (Germany). Of particular interest for committee was the massive extent of used data sets and the plan for in-situ simulation and combined visualization.

Copyright picture: UHH,RRZ/MCC, Arvid Mentz

The poster can be reviewed here.

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MedVis overview preprint gets featured on Gizmodo and MIT Technology Review

During EuroVis 2012, we put a preprint of an upcoming Springer book chapter, titled From individual to population: Challenges in Medical Visualization by Charl P. Botha, Bernhard Preim, Arie Kaufman, Shigeo Takahashi and Anders Ynnerman, on arXiv. To our delighted surprise, the paper was featured two days later both on Gizmodo, titling their post This Is the Future of Medical Imaging, and also on the MIT Technology Review, with a rather complete paper summary titled The Future of Medical Visualisation! This led to a whole slew of other sites also mentioning this work.

In any case, we hope you enjoy reading the preprint, a very compact summary of Medical Visualization developments of the past 30 years and a hint of what the coming decade holds, as much as we enjoyed writing it!

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Get warned before crashing: The DeVIDE Memory Monitor!

With large datasets and complex networks, DeVIDE requires (much) more memory. At some point, you try to allocate just a few hundred megabytes more, and then you’re sitting there staring at the command prompt: DeVIDE has crashed due to your system running out of more memory to give it.

There’s not all that much we can do about this. However, with the new memory monitor (see screenshot below), you should at least not be that surprised anymore:

Memory monitor, showing you total (physical + swap) memory usage on your system.

To upgrade your DeVIDE 12.2.7 installation to a development snapshot, follow these not-so-simple instructions.

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