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Visual Computing Forum

The Visual Computing Forum, or VCF, is a series of seminars organized by the visualization group with selected talks from the fields of visualization, image processing, computer graphics, and so on. The individual seminars are arranged approximately once a month, on Fridays from 11am to 12am, and they will be interleaved with the MedViz seminars. They will be held either at the Høyteknologisenteret or at the VilVite Science Center.  Seminars calendar    VCF on Facebook    Google+

     April 04, 2014

Molecular dynamics simulations for biomolecules: principles and examples

Speaker: Prof. Nathalie Reuter (Dept. of Molecular Biology, UiB)

Place: Room 3137, floor 3, HIB (data blokk), Thormøhlensgate 55

Time: Friday April 04, 2014, from 10.15am to 11.15am

Molecular Dynamics (MD) simulations are widely used to model biomolecules in conditions that mimic the ones of in vitro experiments. The raw result of a MD simulation is a trajectory file containing the position of each atom in the molecule at every time step of the simulation, similar to a movie representing how the biomolecule is wiggling and giggling along simulation time. MD simulations are sometimes referred to as a 'computational microscope' because they allow the investigation of biomolecules dynamics at the atomic level of detail, something that is virtually impossible with the experimental methods currently available.
I will introduce the basic assumptions and principles behind MD simulations for biomolecules; molecular mechanics force fields, equations of motion and their integration, treatment of long-range interactions, etc... Further I will present the practicalities of running MD simulations and the different steps from system setup to trajectory post-processing.

Additional material: Flyer, Reuter Group's webpage

     March 07, 2014

State-of-the-art ultrasound blood flow imaging

Speaker: Lasse Løvstakken (Dept. Circulation and Medical imaging, NTNU)

Place: Room 3137, floor 3, HIB (data blokk), Thormøhlensgate 55

Time: Friday March 07, 2014, from 10.15am to 11.15am

The introduction of real-time ultrasound color-Doppler imaging in the mid-eighties was a major breakthrough for bedside diagnosis of cardiovascular disease. Currently this technique allows for real-time 2D and 3D imaging of blood flow, both for detection of blood and for the quantification of the blood velocity. The use of color-Doppler imaging in clinical practice is, however, mostly qualitative, used to localize but not quantify abnormal flow patterns. The reason is mostly related to the current limitations of color-Doppler related to low frame rates, beam-to-flow angle-dependencies, and a limited measurable velocity span. Further, the fundamental information and color visualization has not changed substantially since its introduction 30 years ago. Currently a technological leap is on the verge in medical ultrasound imaging. The possibility of real-time transfer and processing of channel data and software image formation allows for significantly improved image quality and frame rates in general, as well as a higher accuracy in blood flow imaging. This includes improved possibilities for imaging low flow in small vessels, and the estimation of the blood velocity vector as shown in the image above showing circular flow patterns in the left ventricle of a neonate. I will in this lecture introduce the current color-Doppler imaging modality and its limitations, and present on-going research projects on the future state of the art in ultrasound blood flow imaging.

Additional material: Flyer, Lasse Løvstakken webpage

     February 07, 2014

Applied Visualization and modeling of environment and geology

Speakers: Veronika Šoltészová (CMR Computing / UiB) and Saman Tavakoli (CMR Computing)

Place: Room 3137, floor 3, HIB (data blokk), Thormøhlensgate 55

Time: Friday February 07, 2014, from 10.15am to 11.15am

Computing is a research department of Christian Michelsen Researc (CMR) for applied research in visualization, data analysis and decision support. CMR computing works closely together with industry and government and develops innovative solutions and software prototypes in application areas such as energy, oil&gas, maritime, marine and medicine. In this talk, we will present selected projects that are related to modeling and visualization for geology and environment.
* Decision support for offshore wind turbine installation (DECOFF) Offshore operations such as the installation, maintenance and repairs of wind turbines are complex and to a large extent weather sensitive. The cost of such operations is to a high degree determined by waiting for convenient time for weather-sensitive phases (transportation of equipment, mooring, crane operations, etc.). In this project, we are developping a decision support tool which is based on real physical limitations of the equipment being used and which takes into account uncertainties such as weather conditions.
* Virtual CO2 Laboratory (VIRCOLA) The rapidly advancing deployment of geological CO2 storage requires a better comprehension of the CO2 storage reservoirs, CO2 injection, and long-term fate of geologically stored CO2. In this cross-disciplinary project, we address the challenge by building a virtual CO2 laboratory for co-visualizing and visual analysis of different data types involved.
* Geoillustrator This project focuses on illustrative geology. We will present a prototype that allows for intuitive and quick creation of geological models via sketching. The prototype supports modeling of layers, faulting.

Additional material: Flyer, Slides, CMR Computing Website

VCF seminars in 2014, 2013, 2012, 2011

 Last change: Helwig Hauser, 2009-09-22