A5075851819- Computer Graphics and Visualization Techniques
- Advanced Vision and Imaging
- Radioactive Decay and Measurement Techniques
- 3D Shape Modeling and Analysis
- DNA and Nucleic Acid Chemistry
- Data Visualization and Analytics
- Quantum Chromodynamics and Particle Interactions
- Medical Imaging Techniques and Applications
- Acoustic Wave Phenomena Research
- Nanopore and Nanochannel Transport Studies
- Nuclear physics research studies
- Atomic and Molecular Physics
- Bacteriophages and microbial interactions
- Computational Geometry and Mesh Generation
- Atomic and Subatomic Physics Research
- Optical Imaging and Spectroscopy Techniques
- Noise Effects and Management
- Image Enhancement Techniques
- Neutrino Physics Research
- Vehicle Noise and Vibration Control
KU Leuven
2014-2017
The rare $\ensuremath{\beta}$-decay channel of $^{6}\mathrm{He}$ into the $\ensuremath{\alpha}+d$ continuum was investigated at REX-ISOLDE facility. Bunches postaccelerated ions were implanted optical time projection chamber (OTPC), where decays with emission charged particles recorded. This novel technique allowed us to extend low-energy end spectrum down 150 keV in center mass, corresponding a deuteron energy 100 keV. branching ratio for this process amounts...
By means of computer simulations a coarse-grained DNA model we show that the hairpin zippering dynamics is anomalous; i.e., characteristic time $\ensuremath{\tau}$ scales nonlinearly with $N$, length, $\ensuremath{\tau}\ensuremath{\sim}{N}^{\ensuremath{\alpha}}$ $\ensuremath{\alpha}>1$. This in sharp contrast to prediction zipper for which $\ensuremath{\tau}\ensuremath{\sim}N$. We anomalous originates from an increase friction during due tension built closing strands. From simple polymer get...
Rendering translucent materials with physically based Monte Carlo methods tends to be computationally expensive due the long chains of volumetric scattering interactions. In case strongly forward materials, problem gets compounded since each interaction becomes highly anisotropic and near-specular. Various well-known approaches try avoid resulting sampling through analytical approximations on diffusion theory. Although these are efficient, their assumption diffusive, isotropic can lead...
We speed up the rendering of participating media with Virtual Ray Lights (VRLs) by clustering them in a preprocessing step. A subset representative VRLs is then sampled from clustering, which used for final rendering. By performing full variance analysis, we can explicitly estimate convergence rate process and automatically find locally ideal number clusters to maximize efficiency. Overall, report speed-up factors ranging 13 16 compared unclustered
Metropolis Light Transport is a powerful global illumination algorithm, yet it has some issues that make less suitable for animation rendering. Due to the algorithm's local exploration of path space, difficult light paths can appear very late in rendering process or might be missing from final image altogether. This unpredictable convergence behaviour especially troublesome when animations, since these need rediscovered every frame. An inability rediscover across entire causes unpleasant...
The kd-tree and Bounding Volume Hierarchy (BVH) are well-known data structures for computing ray-object intersections. Less known is the Constrained Convex Space Partitioning (CCSP), which partitions space makes geometric primitives exactly overlap with boundaries of its cells. Consequently, it robust against ill-fitting cells that plague methods axis-aligned (kd-tree, BVH) permits an efficient, stackless traversal. Within computer graphics, CCSPs have received some attention in both 2D 3D,...