Latest Events


DCGI will present three full papers at SIGGRAPH 2017 (Los Angeles, USA):

Fišer et al.: Example-Based Synthesis of Stylized Facial Animations

Dvorožňák et al.: Example-Based Expressive Animation of 2D Rigid Bodies

Lukáč et al.: Nautilus: Recovering Regional Symmetry Transformations for Image Editing

DCGI at Eurographics 2017

DCGI will present a full paper at Eurographics 2007 (Lyon, France):

J. Hendrich, D. Meister, J. Bittner: Parallel BVH Construction using Progressive Hierarchical Refinement

Dean's Award for the dissertation thesis for our PhD students

On Wed 11. 1. 2017, two our PhD students received Dean's Award for the prestigious dissertation thesis in the field of Information Science and Computer Engineering.

Ing. Michal Lukáč, Ph.D. Ing. Michal Hapala, Ph.D.
award winning thesis award winning thesis
Example-based Creation of Digital Imagery Data Structures and Algorithms for Interactive Ray Tracing
supervisor: prof. Jiří Žára supervisor: prof. Vlastimil Havran
supervisor-specialist: prof. Daniel Sýkora

current employer

current employer
Adobe Research Warhorse Studios

20th Student scientific seminar User Interfaces at HTW Dresden

In the days 24.11 and 25.11. 2016 20th student scientific seminar User Interfaces was held in the building of HTW Dresden (University of Applied Sciences in Dresden).

Students delivered talks about their results achieved in scientific projects. Their form of participation were either thesis (BSc. or MSc.) or student projects (programme of the workshop is here). Main topics discussed in the seminar were user interfaces and computer graphics issues. Workshop organization was shared by Department of Computer Graphics and Interaction at FEL CTU Prague and Faculty of Informatics HTW Dresden. The seminar has quite a long tradition and one of aims of the seminar is to attract attention of students (both BSc.and MSc. ones) towards scientific work. The assumption is that an integral part of scientific work is presentation of the results achieved to international audience in English. A bunch of students who participated in the workshop in the past entered PhD study later on where they continued in many cases in research they presented during the workshop.

After 20 years it is possible to make positive evaluation of the workshop. The scientific quality of talks is steadily increasing as well as the ability of students to communicate in English. An effort has been made to conform the format of the workshop in such a way that it should be similar to format of standard international workshops. E.g. in 2015 Proceedings were published – the Proceedings had a form of abstracts where information about each contribution was presented. Proceedings from this year will have a form of Technical report published by HTW Dresden where each talk will be presented in the form of extended abstract. In general it is possible to say that students evaluate the event as interesting and beneficial one.

In the workshop participated the following students from FEL:

  • BSc. students: Gintner Vojtěch, Szczurková Jana, Riganová Michaela
  • MSc. students: Novák Vojtěch, Dzurenko Martin
  • PhD. students: Kutíková Anna, Balata Jan
htw1.jpg htw2.jpg

StyLit on Adobe MAX 2016

Algorithm StyLit developed at our department was presented on November 3, 2016, 6pm PDT at Adobe MAX conference in San Diego (see the video from the audience and the entire recording). During this presentation a release of interactive demo was announced for those who are interested to try StyLit in practice.

Interview with Adam Sporka in the Score Magazine

Score, a traditional Czech printed magazine on video games, published an interview with Adam Sporka, a member of our department, about his work on the music for upcoming video game Kingdom Come: Deliverance. The piece is a part of the series of interviews with members of Warhorse Studios.

Article in Cartoon Brew

Popular on-line magazine Cartoon Brew published an article about StyLit algorithm which was developed by members of DCGI: J. Fišer, O. Jamriška, M. Lukáč and D. Sýkora.


DCGI will present full paper at SIGGRAPH 2016 (Anaheim, USA):

StyLit: Illumination-Guided Example-Based Stylization of 3D Renderings

The paper was selected also for SIGGRAPH 2016 - Technical Papers Trailer.

Invited Talk - Eduard Gröller - Visual Computing and Comparative Visualization

Speaker: Eduard Gröller (TU Vienna, Austria)

Date: April 15, 2016 11:00 - 12:00
Place: ČVUT FEL, lecture room KN:E-301 (Karlovo náměstí 13, Praha 2)


Visualization and Visual Computing use computer-supported, interactive, visual representations of (abstract) data to amplify cognition. In recent years data complexity and variability has increased considerably. This is due to new data sources as well as the availability of uncertainty, error and tolerance information. Instead of individual objects entire sets, collections, and ensembles are visually investigated. This raises the need for effective comparative visualization approaches. Visual data science and computational sciences provide vast amounts of digital variations of a phenomenon which can be explored through superposition, juxtaposition and explicit difference encoding. A few examples of comparative approaches coming from the various areas of visualization, i.e., scientific visualization, information visualization and visual analytics will be treated in more detail. Analysis techniques which combine visualization and simulation to assist decision making in flooding scenarios, indoor lighting design and city planning will be discussed. Given the amplified data variability, comparative visualization techniques are likely to gain in importance in the future. Research challenges, directions, and issues concerning this innovative area are sketched at the end of the talk.

DCGI receives the NVIDIA GPU Research Center status

crc_logo.jpg Department of Computer Graphics and Interaction has been awarded the status of NVIDIA GPU Research Center at the beginning of 2016. Status award will benefit us receiving pre-release access to hardware and software (e.g. Tesla K40) to be used for our reasearch in areas of rendering and advanced image manipulation.

GPU Research Center status is shared with Faculty of Nuclear Sciences and Physical Engineering.

Adam Sporka's talk at GDS 2015: Adaptive Music in Kingdom Come: Deliverance

The music in our game responds to the actions of the player. It goes from peaceful to agitated when the player is attacked by enemy NPC, from neutral to dark when entering a cave, etc. The challenge is to respond swiftly, make the transitions between parts of the soundtrack as seamless as possible (maintain the correct voicing and harmonic progressions), and above all, have diverse yet consistent soundtrack.

Watch talk on youtube

Best Session Award at CogInfoCom 2015

Our member Zdeněk Míkovec has been awarded by the The Best Session Award at the 6th IEEE International Conference on Cognitive Infocommunications 2015 for organizing the session entitled Accessibility of CogInfoCom Systems.

Test-of-Time 2006 Award at HPG 2015

Our member Vlastimil Havran has been awarded by the Test-of-Time 2006 Award at the HPG 2015 conference for the most cited paper: On building kd-Trees for Ray Tracing, and on doing that in O(N log N)

The summer school PULSEE led by Bozkurt Karasu started on 8th June 2015

The summer school PULSEE started today in Institute of intermedia. It is led by Bozkurt Karasu (MIT, Cambridge, USA). The intensive workshop will be finished by public presentation of students' work on 19th June form 2pm in IIM. The presentations will continue on theatre board of brodthers Formans - “Tajemství” where also afterparty will be held. The students and professionals working in the area of intermedia will meet there. You all are invited!

Corresponding links:

Už to běží...

Afterparty will be organized in cooperation with Partner.

DCGI at SIGGRAPH 2015 and Eurographics 2015

Best paper and presentation at SCCG 2015

Our member Ladislav Čmolík has been awarded by the 1st prize for the Best Paper and by the 2nd Best Presentation of the conference SCCG 2015 for the paper Automatized Summarization of Multiplayer Games:

Best paper, presentation, and video at CESCG 2015

Our student Tomáš Pastýřík has been awarded by the 1st prize for the Best Paper and Best Presentation of the student conference CESCG 2015:

The awarded paper Order Independent Transparency with Non-local Opacity Modulation for 3D Meshes was a part of his diploma thesis supervised by our member Ladislav Čmolík.

The 1st prize for the Best Video was awarded to our student Daniel Mikeš:

He presented a paper Real-time Water Simulation with Wave Particles on the GPU, which originate from his diploma thesis supervised by our member Jiří Bittner.

EuroNews Documentary

EuroNews broadcasted a short documentary about successful cooperation of DCGI with movie industry.

Triangle -- New Student Workroom and Lounge

DCGI opened Triangle, a workroom and lounge for students working on bachelor and diploma theses supervised by DCGI's faculty members. It's a nice and comfortable environment for work on a project, consult the class material with colleagues, do little presentations, or just sit down and have a cuppa or coffee.


Equipment and amenities:

  • An i7 machine
  • 3 Full HD screens for laptops
  • Full HD beamer
  • Whiteboard
  • Lounge area
  • Kitchenette

Open Position! Ray Tracing on Mobile Phones

We offer an open position for one undergraduate or graduate student in a research project dealing with fast construction of data structures for ray tracing on mobile phones. The work will be conducted in cooperation with our partner from abroad and it can also become a topic of a master thesis.

Job Conditions

  • Schedule: 1.12. 2014 - 31.10. 2015
  • Workload: 80 hours / month
  • Salary: 15.000 - 20.000 CZK / month (depending on the results)
Required skills
- Excellent knowledge of C++
- Multithreaded C++ programming
- Fluent English
- Time flexibility

Advantageous skills
- Experience with constructing data structures for ray tracing
- Knowledge of SIMD intrinsics
- Experience with development on ARM processors
- Android development experience

Interested students should send their CV, list of subjects studied with grades, example of their own C++ source codes, possible copies of documents showing their strong abilities such as diplomas from contests, and a motivation letter to Jiri Bittner (see the contact below), who can also respond to any questions dealing with the position. The job interviews will be organized in November 2014.

The deadline for sending the application is November 14th, 2014.

Application should be submitted to Jiri Bittner, E-mail:,

Invited Talk - Marc Stamminger - Capturing the Real World with Commodity Depth Cameras

Speaker: Marc Stamminger (Friedrich-Alexander-University Erlangen-Nuremberg, Germany)

Date: November 7, 2014 12:45 - 13:45
Place: ČVUT FEL, lecture room KN:E-301 (Karlovo náměstí 13, Praha 2)


In this talk I describe methods to capture the real world around us using cheap commodity 3D-cameras such as the Microsoft Kinect or any of its successors. These cameras deliver 30 depth images per second, but each at only low quality. Yet, with the fusion of such a depth image stream, 3D-scans of decent quality can be made. I will describe extensions that make it possible to scan large scenes and show results from scanning sessions in an excavation site in Turkey. Another extension handles the realtime capturing of deformable objects such as faces, hands, or bodies. Finally, I will show a very recent new realtime approach combining depth and RGB-data to increase the resolution of the captured geometry.

Invited Talk - Stefan Gumhold - Object Pose Estimation and Tracking with 3D Object Coordinates

Speaker: Stefan Gumhold (TU Dresden, Germany)

Date: October 24, 2014 12:45 - 13:30
Place: ČVUT FEL, lecture room KN:E-301 (Karlovo náměstí 13, Praha 2)


This work addresses the problem of estimating and tracking the 6D Pose of specific objects from a single RGB-D image. We present a flexible approach that can deal with generic objects, both textured and texture-less. The key new concept is a learned, intermediate representation in form of a dense 3D object coordinate estimate paired with a dense object labelling. Random forests are exploited to predict 3D object coordinates and object probability from local image patches. We pair this discriminative estimate with a generative explanation of the RGB-D image in an energy functional that is robustly minimized with a RANSAC like approach. Tracking is based on the particle filter framework for which we designed efficient proposal distributions in order to efficiently sample the six dimensional parameter space of object poses. The proposed approach allows for real-time tracking and is very robust to changes in lighting and to occlusions.

Best Master's Thesis Award 2014

Our student Vojtěch Krs (on the left side of the photo) has been awarded by the 1st prize for the best master's thesis of the year 2014 in the category “Enterprise Information Systems, other IT works”. The awarded thesis Sculpting in Virtual Reality was supervised by our member, Ondřej Jamriška (on the right side of the photo).

DCGI at SIGGRAPH'14, EGSR'14, and HPG'14

Invited Talk - Michael Guthe - GPU Ray Tracing - Concepts, Advances and Challenges

Speaker: Michael Guthe (University of Bayreuth, Germany)

Date: June 19, 2014 14:00 - 15:00
Place: ČVUT FEL, lecture room KN:E-301 (Karlovo náměstí 13, Praha 2)


Due to the immense parallel processing power of modern graphics hardware, ray tracing algorithms and applications on the GPU have emerged. Depsite several architectural challanges, real-time recursive ray tracing has become possible. More sophisticated global illumination algorithms however still pose major challanges for efficient implementations on the GPU. After a short introduction into the programming model and the processing flow of GPUs, recent advances in real-time ray tracing will be discussed. These include acceleration data structures as well as a study of memory access and latency during intersection testing. In this context, the general problem of divergence and approaches to improve thread utilization will also be presented. The talk closes with an overview of techniques to implement more sophisticated global illumination algorithms like path tracing, bi-directional path tracing and Metropolis light transport, while putting an emphasis on the open problems in this field.

Student Research Assistant and PhD students call for application

The application for job positions are in PDF document. The deadline for submitting the document is 18th April 2014.

Lucie Svobodová - Exhibition in Nau gallery


Invited Talk - Bedřich Beneš - Inverse Procedural Modeling

Speaker: Bedřich Beneš (Purdue University, USA)

Date: December 6, 2013 11:00 - 12:00
Place: ČVUT FEL, lecture room KN:E-301 (Karlovo náměstí 13, Praha 2)


Procedural modeling has proven to be a powerful set of algorithms and techniques and it has been used for generation of a wide-variety of objects and effects. However, their definition is a tedious and non-intuitive task that is usually done either by experts, or by a trial and error approach. In this presentation, we will show some of our results in the field of inverse procedural modeling where we attempt to find a procedural representation of an existing object or a scene. Various examples of learning models from biology, urban models, and other procedural representations will be presented.

Detailed information about invited speaker and his talk.

Invited Talk - Martin Fuchs - Visual Computing beyond Pictures

Speaker: Martin Fuchs (University of Stuttgart, Germany)

Date: November 15, 2013 11:00 - 12:00
Place: ČVUT FEL, lecture room KN:E-301 (Karlovo náměstí 13, Praha 2)


Visual computing encompasses a multitude of subjects which have evolved around a common goal: creating and understanding worlds with pictures. Recently, appearance fabrication has emerged as an exciting topic in visual computing: it addresses how to employ rapid manufacturing techniques in order to build tangible artifacts which have a predefined appearance. In this talk, I will present my contributions to appearance manufacturing, discussing passive reflectance field displays and printed subsurface scattering. Further, I will show how the use of rapid manufacturing techniques for computational photography enables refocusing images after they were taken.

The new navigation system for blind people attracted attention in Paris - inserted on 25.10.2013

Czech engineers have decided to join forces and create a navigation system for the blind that help them move around the city. The project includes the improvement of the mobile navigation, design of a special bracelet that improve the orientation in an unfamiliar environment and at last but not least, the creation of the game communicating with players using touch and heat.

The entire article in czech on
Project web sites on
Video on YouTube

DCGI papers accepted to SIGGRAPH'13, EGSR'13, and CVPR'13

DCGI Annual Report 2012 - short version

Short version of DCGI Annual Report 2012 has been published. It will become a part of the faculty annual report.

Best Paper Award at CogInfoCom 2012

Jan Balata, Zdeněk Míkovec, and Pavel Slavík received Best Paper Award at the 3rd IEEE International Conference on Cognitive Infocommunications (held in Košice, Slovakia on 2-5 December 2012) for their paper entitled: Mutual Communication in Navigation of Visually Impaired.


The Chip Tune Music and Light Course in Summer 2012

PULSEE - The Prague University of Light & Sound Experimental Engineering

The Practical Course on Developing Electronic Music Tools and Light Controllers organized in Institute of intermedia.

JOIN THE FANTASTIC ARDUINO TUNING MUSIC WORKSHOP IN SUMMER PRAGUE Under the supervision of the skilled professionals you will find out how to create a real electronic musical instrument using the Arduino prototyping platform. You will enjoy a lot of fun controlling your own synthesizer by MIDI and using it together with large programmable stage lights.

Visit our site:

Follow us on Facebook:

Registration: By 20 May 2012

Best Paper Award at NPAR 2011

Daniel Sýkora, Mirela Ben-Chen, Martin Čadík, Brian Whited and Maryann Simmons received Best Paper Award (in Animation) at International Symposium on Non-Photorealistic Animation and Rendering in Vancouver, Canada on 5–7 August 2011, collocated with SIGGRAPH 2011 for their paper: TexToons: Practical Texture Mapping for Hand-drawn Cartoon Animations.


Best Presentation Award at CESCG 2011

Our student Jakub Hušek has been awarded by the 1st prize for the Best Presentation of the student conference CESCG 2011. The awarded presentation Multi-touch Table with Image Capturing was part of his diploma work supervised by our member, Miroslav Macík.


Opening of common CTU and HTC mobile laboratory

It was published about our European Project i2home

INVITED TALKS on 18. 1. 2011

10:00 Miloš Šrámek (Austrian Academy of Sciences): Voxelization of geometric objects with sharp details

Voxelization is a sampling process that transforms a continuously defined object into a discrete one represented as a voxel field. The voxel field can be used for rendering or other purposes which often involve a reconstruction of a continuous approximation of the original object. Objects to be voxelized need to fulfill certain representability conditions; otherwise, disturbing artifacts appear during reconstruction. We present a new method for voxelization of solid objects containing sharp details which extends the traditional distance-based voxelization by an a-priori detection of sharp object details and their subsequent modification in such a way that the resulting object to be voxelized fulfills the representability conditions. We exemplify the method by two classes of solid objects that normally contain such sharp details: implicit solids and solids resulting from CSG operations. In both cases, the sharp details are rounded to a specific curvature dictated by the sampling distance.

11:00 Andrej Ferko (Univerzita Komenského v Bratislave): Multidimensional Urban Visions

MUVIS is an extensible platform for online participatory urban planning. MUVIS (Multidimensional Urban Visions) offers for people, local authorities, and investors a dialogue of all participants and in a case study Virtual Petrzalka achieves creation, visualization, and discussing visions and plans. MUVIS offers a recent technology solution and improves current state and approach with explaining new methods to obtain - as optimal as possible - future of our cities.

**SEMESTRALE 2010** - opening of the student art exhibition

On the 14th of October 2010 at 5 p.m. the exhibition of student works will be opened. The exhibition will take place in the hallway at the 3rd floor, E building, Karlovo nam. 13.

Mobile 3D Talking Head wins BEST PAPER AWARD at the SiMPE 2010 Workshop !!!

The paper by Jiří Danihelka, Roman Hák, Lukáš Kencl and Jiří Žára, titled “3D Talking-Head Interface to Voice-Interactive Services on Mobile Phones” receives BEST PAPER AWARD at the 5th Workshop on Speech in Mobile and Pervasive Environments SiMPE (in conjunction with the ACM MobileHCI 2010 conference) on September 7, 2010 in Lisbon, Portugal. Congratulations for a great success at a respected international workshop and a strong achievement for the 3D Mobile Internet team! Many thanks go to Vodafone Foundation Czech Republic for the continuous support of this project.

Best Paper Award at CESCG 2010

Our student Ondřej Jamriška has been awarded by the 1st prize for the Best Paper at the student conference CESCG 2010. The awarded paper Interactive Ray Tracing of Distance Fields was the subject of bachelor thesis supervised by our member, Vlastimil Havran.

Eurographics 2010 Best Paper Award

The authors team Daniel Sýkora, David Sedláček, Sun Jinchao, John Dingliana, and Steven Collins received Günter Enderle Award (Best Paper Award) at prestigious conference Eurographics 2010 for their contribution Adding Depth to Cartoons Using Sparse Depth (In)equalities.

The main author, Daniel Sýkora, after receiving PhD degree (supervisor prof. Žára) moved to Trinity College Dublin where he works as research fellow, David Sedláček is PhD student at CTU in Prague (supervisor prof. Žára).

BBC News on i2home

CTU Team defended successfully i2home project. It was broadcasted by BBC.
Links to these videos you can find here.
BBC News on i2home
BBC News i2home technology

Institute of InterMedia

Institute of InterMedia , which is very closely linked to the Department of Computer Graphics and Interaction (DCGI) was set up as a joint workplace of CTU and Academy of Performing Arts in Prague. Its aim is to create a space for interdisciplinary cooperation among the students of technical school and students of art disciplines. The area of computer graphics and virtual reality is offering a large field for collaboration. Czech TV editors of publicistic programme PORT created one part of this programme dedicated to Virtual reality in which they engaged experts from the appointed workplaces and their colleagues from Masaryk University in Brno. So next step in the promotion of interesting science to the public has been made, which especially today we consider very important. (Roman Berka - the head of IIM.) Czech TV PORT

Microsoft Interoperability Lab at CTU.

CTU-Interoperability Lab (IOL) is the new joint project of CTU fakulty of Electrical Engineering and Microsoft coordinated by Technology Exploration Center(TEC).

The aim of IOL is to create prestigious independent workplace, which could be searched by top experts, institutions and companies dealing with design or developing multi-platform solutions in the Czech Republic and as well abroad. CTU is giving patronage and garantee of independce to this project. On the other hand Microsoft enables practical use of knowledge and research and development results. CTU-IOL is not going to be limited only in cooperation of CTU and Microsoft. In contrary it is completely open to application developers or users, also for commercial and noncommercial organizations. Interoperability Lab

VERITAS project

DCGI is one of the partners in a new VERITAS project granted in the scope of the 7th Framework programme of the EU. VERITAS aims to develop, validate and assess an open framework for built-in accessibility support at all stages of ICT and non-ICT product development, including specification, design, development and testing. The goal is to introduce simulation-based and VR testing at all stages of product design and development into the automotive, smart living spaces, workplace, infotainment and personal healthcare applications areas. This should ensure that future products and services are being systematically designed for all people including those with disabilities and functional limitations.

Events Archive

Person responsible for the page content: Ing. Jaroslav Sloup
en/events/main.txt (49971 ) · Last modified: 28.04.2017 - 22:48 by Sýkora Daniel