48,263 research outputs found
MovieMaker: A Parallel Movie-Making Software for Large Scale Simulations
We have developed a parallel rendering software for scientific visualization
of large-scale, three-dimensional, time development simulations. The goal of
this software, MovieMaker, is to generate a movie, or a series of visualization
images from totally one TB-scale data within one night (or less than 12 hours).
The isocontouring, volume rendering, and streamlines are implemented.
MovieMaker is a parallel program for the shared memory architecture with
dynamic load balancing and overlapped disk I/O.Comment: 3pages, 5figures, submitted to J. Plasma Physcs (special issue for
19th ICNSP
Visualizing 2D Flows with Animated Arrow Plots
Flow fields are often represented by a set of static arrows to illustrate
scientific vulgarization, documentary film, meteorology, etc. This simple
schematic representation lets an observer intuitively interpret the main
properties of a flow: its orientation and velocity magnitude. We propose to
generate dynamic versions of such representations for 2D unsteady flow fields.
Our algorithm smoothly animates arrows along the flow while controlling their
density in the domain over time. Several strategies have been combined to lower
the unavoidable popping artifacts arising when arrows appear and disappear and
to achieve visually pleasing animations. Disturbing arrow rotations in low
velocity regions are also handled by continuously morphing arrow glyphs to
semi-transparent discs. To substantiate our method, we provide results for
synthetic and real velocity field datasets
Inviwo -- A Visualization System with Usage Abstraction Levels
The complexity of today's visualization applications demands specific
visualization systems tailored for the development of these applications.
Frequently, such systems utilize levels of abstraction to improve the
application development process, for instance by providing a data flow network
editor. Unfortunately, these abstractions result in several issues, which need
to be circumvented through an abstraction-centered system design. Often, a high
level of abstraction hides low level details, which makes it difficult to
directly access the underlying computing platform, which would be important to
achieve an optimal performance. Therefore, we propose a layer structure
developed for modern and sustainable visualization systems allowing developers
to interact with all contained abstraction levels. We refer to this interaction
capabilities as usage abstraction levels, since we target application
developers with various levels of experience. We formulate the requirements for
such a system, derive the desired architecture, and present how the concepts
have been exemplary realized within the Inviwo visualization system.
Furthermore, we address several specific challenges that arise during the
realization of such a layered architecture, such as communication between
different computing platforms, performance centered encapsulation, as well as
layer-independent development by supporting cross layer documentation and
debugging capabilities
Computational medical imaging for total knee arthroplasty using visualitzation toolkit
This project is presented as a Master Thesis in the field of Civil Engineering, Biomedical specialization. As the
project of an Erasmus exchange student, this thesis has been under supervision both the Universite Livre de
Bruxelles and the Universitat Politecnica de Catalunya. The purpose of this thesis to put in practice all the
knowledges acquired during this Master in Industrial Engineering in UPC and to be a support for medical staff
in total knee arthoplasty procedures.
Prof. Emmanuel Thienpont has been working for years as orthopaedic surgeon at the Hospital Sant Luc,
Brussels. His years of work and research have been mainly focused on Total Knee Arthroplasty or TKA. During
one of the most important steps of this procedure, the orthopaedic surgeon has to cut the head of the femur
following two perpendicular cutting planes. Nevertheless, the orientation of these planes are directly dependant
of the femur constitution.
This Master Thesis has been conceived in order to offer the surgeon a tool to determine the proper direction
planes in a previous step before the surgical procedure. This project pretends to give the surgeon an openfree
computational platform to access to patient geometrical and physiological information before involving the
subject in any invasive procedure
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