Category Archives: Archive

MSc thesis defense Monday 17th September

You are cordially invited to attend the MSc thesis defense of Anshul Khandelwal, titled Reservoir Characterization using a Geometric Approach.

The defense will take place on Monday, 17th September at 14:00h in room Colloquimzaal 0.E420 at Van Mourik Broekmanweg.

The presentation is open to the public and will last around 40 minutes including questions from the audience. You are hereby cordially invited to join!

Reservoir Characterization using a Geometric Approach

Quantifying the anthropogenic impacts such as reservoir characterization is a big challenge in the field of water management. In this work, a computer graphics based geometric approach is presented which can predict the underlying topology of large-scale reservoirs. The proposed algorithm uses freely available, satellite based landscape data of the surrounding regions to predict reservoir characteristics. The premise of the presented approach is that the slope of the surrounding landscape is an important determinant to understand the underlying landscape of the reservoirs. This method outperforms the existing state-of-the-art techniques used to estimate the storage capacities drastically, both in terms of estimated maximum volume stored and estimated volume area curves. Evaluation of the geometric model presented is done on 28 reservoirs using the HydroSHEDs data which was developed using the Shuttle RADAR Topography Mission conducted by NASA. This HydroSHEDs data was obtained in 2000 which acts as ground truth data for the reservoirs built after 2000. Further, model parameters are introduced to improve the modeling capabilities of the reconstructed reservoirs. This approach further intensifies the case of using computer graphics techniques for raster based analysis and provides a platform for further research in the field of water management.

Prof. Dr. Elmar Eisemann
Dr. Klaus Hildebrandt
Dr. Cynthia C.S. Liem
Prof. Dr. Nick van de Giesen

Delft Data Science Seminar – Visual Data Science and its role in Computational Medicine

Tuesday the 6th of Februari the Delft Data Science Seminar takes place at the Faculty of Aerospace and Engineering at TU Delft.

The Computer Graphics and Visualization Group of TU Delft Data Science, in cooperation with prof. Helwig Hauser from the University of Bergen (Norway), organise this one-day workshop where evolutionary new opportunities in data science and technology are combined in visualisation and medicine in methods such as neuroimaging and machine learning.

We are glad that eight high-profile speakers have accepted our invitation to talk at this workshop. They will comment on a variety of topics, including visual data science vs. classical science, on computational vs. interactive approaches and on the role of the human in visual data science.

Join us on Tuesday the 6th of February from 10 AM till 5 PM for the Delft Data Science Seminar – Visual Data Science and its role in Computational Medicine.

Workshop program (links to slides): 

09h30 welcome & registration

10h00 opening (DDS / TU Delft, Univ. of Bergen)

10h10 session 1: computational & visual solutions in biomedicine (chair: H. Hauser)

11h10 coffee break

11h30 session 2: neuroimaging and visual data science (chair: A. Vilanova)

12h30 lunch

13h30 session 3: data science with statistics & machine learning (chair: E. Eisemann)

14h30 coffee break

14h50 session 4: visual data science with visualization & visual analytics (chair: H. Hauser)

16h00 panel discussion

The panel focused on having different views on relevant aspects of visual data science. Visual data science vs. classical science (indicating the change of paradigm on how to identify hypothesis), on computational vs. interactive visual approaches (challenges and opportunities), on the role of the human in visual data science.


16h45 closing (DDS / TU Delft, Univ. of Bergen)

17h00 drinks


Recent PhD defenses

Two new doctors graduated from our group at the end of 2014 in the field of medical visualization:

  • Dr. Peter Kok successfully defended his PhD. In his thesis, ‘Integrative Visualization of Whole Body Molecular Imaging Data‘, Dr. Kok present methods to map molecular imaging data to a common reference frame, to combine multiple modalities and to compare scans taken at different timepoints. The full text of the thesis is available here.
Dr. Kok with his paranymphs and the thesis committee members.
Dr. Kok with his paranymphs and the thesis committee members. tblr: Jos Roerdink, Elmar Eisemann, Charl Botha, Erik Jansen, Boudewijn Lelieveldt, beadle Rina Abbriata, Louise van der Weerd, Bernhard Preim, Noeska Smit, Peter Kok, Thomas Kroes and the head of the committee.
  • On the same day, Dr. Stef Busking also successfully defended his PhD. His thesis, ‘Visualization of Variation and Variability‘ deals with comparative visualization as a means to analyze variation or variability based on two or more specific instances of the data. The full text of the thesis is available here.

We would like to congratulate to both doctors with their accomplishments.

Elmar Eisemann’s inauguration speech: today at 15:00 in the TU Delft Aula!

Today, Elmar Eisemann, the head of our Computer Graphics and Visualization group, will be delivering his inauguration speech at 3 pm in the TU Delft Aula. Don’t miss this once in a lifetime opportunity to hear about, and see, the many exciting possibilities and application areas of computer graphics. Find out in what directions our group will develop in and join us this afternoon at the aula auditorium. Check out the full invitation here!

Presentation and Paper Award at i3D 2014


At i3D 2014, our paper “Prefiltered Single Scattering” (Oliver Klehm et al.) received two awards.
It was chosen for the JCGT selection and it won the third place presentation award!

The approach allows rendering of participating media at very low cost with high quality, which makes it interesting for many interactive applications!

Congratulations everyone!

CGV at the open days

Yesterday, at the open days for the potential new computer science bachelor students, the CGV group presented several gametech-related student projects. Here are some pictures from the TU Delft Computer Science facebook page:

On Monday, there will be another chance to see these projects and many more at the second day of the open days.

New group website launched!

Welcome to the new website of the Computer Graphics and Visualization group! We have migrated from our old MoinMoin wiki-style webpage to this brand new WordPress installation. In addition to this new website, we also have a new group logo that can be seen in the header image above. To celebrate, Ricardo Lopes has composed a video that  showcases some of the research that  is done in our group with music by Berend Klein Haneveld:

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!