Semester projects Autumn 2011
Please consult the responsible assistant and/or Prof. R.D. Hersch (by email),
before registering for a project. Upon discussion of mutual interests, further projects may be proposed.
Some projects may then be pursued at a company as Master projects.
ARTISTIC IMAGING, COLOR REPRODUCTION, MOIRES
- Modelization of the Diasec imaging technology (1 etud.)
- Display of specular color images
- Skeleton editor (1 etud.)
- Modelisation of paint mixtures with the Kubelka-Munk (KM) theory
- Monte-Carlo simulation of the interaction between light, paper and inks (1-2 etud.)
- Software for the creation of advanced halftones
ROBOTIQUE & OPTIQUE
- Specular reflection measurements by applying polarizing filters
PARALLELISM
- Finite element implementation on Graphical Processing Unit (GPU)
The diasec technology
is a process for facemounting prints on acrylic glass.
The resulting prints look better than high-gloss photographs.
With the help of the prediction models created
at the Peripheral Systems Lab, develop a model predicting the color of
images on which the diasec technology has been applied.
- Responsables:
- Romain Rossier, tél. 36744 (r.rossier@epfl.ch)
- Roger D. Hersch, tél. 34357 (RD.Hersch@epfl.)
Under specular illumination, reflectances can be much larger than one.
This applies both to colors printed on paper and to colors printed on
a metallic substrate such as alumininium.
Conceive strategies in order to display specular images on a computer display
in the best possible manner. Compare the results of the different approaches.
- Responsables:
- Romain Rossier, tél. 36744 (r.rossier@epfl.ch)
- Roger D. Hersch, tél. 34357 (RD.Hersch@epfl.)
Image processing tools have been developed for creating
microstructure images
from binary images shapes (typographic characters, symbols, etc..).
These tools rely on the automatic computation of the skeletons of the original shapes.
Create a tool allowing artists to interactively modify these skeletons and
visualize the resulting microstructure shape. Here is more information
on the microstructure creation methods.
- Responsables:
- Romain Rossier, tél. 36744 (r.rossier@epfl.ch)
- Roger D. Hersch, tél. 34357 (RD.Hersch@epfl.)
The Kubelka-Munk theory is capable of modelizing the interaction of
light with diffuse colored material such as paints. Apply the KM theory for helping
artists to create a specific color from a mixture of two available paint colors.
- Responsables:
- Roger D. Hersch, tél. 34357 (RD.Hersch@epfl.)
Various phenomena influence the reflection spectrum of a color halftone
patch printed on a given substrate (e.g. paper). These phenomena comprise
the surface (Fresnel) reflection at the interface between the air and the paper, light
scattering and reflection within the substrate (i.e. the paper bulk), and the internal (Fresnel)
reflections at the interface between the paper and the air.
We would like to deduce the reflectance of halftone prints (BRDF) according to the observation angle
by performing Monte-Carlo simulations, i.e. by launching many light rays
across a physically based model of the print.
- Responsables:
- Roger D. Hersch, tél. 34357 (RD.Hersch@epfl.)
Classical color dithering techniques assume that the contributing inks may be superposed.
However, if one would like to print images with special inks such as metallic inks,
halftoning algorithms need to be developed to create juxtaposed halftones, i.e. halftones
where the different inks are laid out side by side. The goal is to create software for
constructing halftoning libraries with juxtaposed halftones.
- Responsables:
- Romain Rossier, tél. 36744 (r.rossier@epfl.ch)
- Roger D. Hersch, tél. 34357 (RD.Hersch@epfl.)
Thanks to the use of polarizing filters, try to validate the hypothesis that part of the specularly reflected light that interacts with
halftone prints penetrates the ink surface and is reflected at the boundary between the ink and the paper.
The lab's optical bench can be used for this purpose. A collaboration with a scientist from the physics department is foreseen.
- Responsables:
- Roger D. Hersch, tél. 34357 (RD.Hersch@epfl.)
This interdisciplinary project consists in porting the finite element library Akantu, onto a GPU architecture.
Akantu is an object-oriented and vectorized open source library. The project will be divided in two main parts.
The first consists in the study of Akantu's library and in digging into literature for the different existing solutions
allowing to optimize Finite Element codes on GPU. This part of the study aims at deciding where and how it is interesting
to put coding efforts to achieve significant performance gain. The second part of the project will be to implement these
choices and to validate the programming on one/several test case(s).
This project would be conducted in the LSMS (ENAC) in conjunction with the LSP (IC),
and can be done by a student from IC or ENAC with the requirements of having a good knowledge in C/C++.
For more info, consult this article as well as
the Computational Solid Mechanics Laboratory
.
- Responsables:
- Nicolas Richart (LSMS), tél. 32412 (nicolas.richart@epfl.ch)
- Romain Rossier, tél. 36744 (r.rossier@epfl.ch)
<basile.schaeli@epfl(add: .ch)>
