VestLab Zürich blog

Not an issue for us now that the new beamer was purchased, but I thought this comment was interesting regarding OLED monitors, so it is something to keep in mind the next time a good beamer/monitor needs to be purchased

[copied from  visionlist:

http://visionscience.com/mailman/listinfo/visionlist

]

We are currently assessing the Sony Trimaster EL PVM2551MD OLED monitor for vision science applications. I can give you a few preliminary results already.

As you probably know, LCD monitors may have severe issues with respect to their temporal behavior, i.e. when you present dynamic stimuli on them, because this requires a reorientation of the liquid crystal molecules, and this process takes time (the so-called "response time").

OLEDs, however, are driven by diodes and don't have any "response time" issues.

The device that we measure can switch from black to any other luminance in fractions of a millisecond. Moreover, the signal is set to black within each single frame, which kind of "mimics" the CRT signal. Indeed, our monitor is free of motion blur, like a CRT, and has great temporal characteristics. This is really promising for vision science considering all the troubles with LCDs.

However, the refresh rate of the monitor is 60 Hz, and the CRT like signal causes visible peripheral flicker. This should not be a problem for visual experiments though.

Unfortunately, we also observed a considerable drawback of the monitor: Some of the color primaries were not able to display the full luminance range of 8 bit.

This may not only impair experiments relying on color but also applications that require precise contrast or even techniques like bit-stealing.

We don't know yet if this behavior is specific to our monitor or if these artifacts occur in other OLEDs as well. We are currently waiting for two other OLED monitors which we would like to assess as well.

We will present posters about OLED monitors this year on two conferences, namely APCV in Incheon (Korea) and ECVP in Alghero (Italy). If you'll attend any of these conferences as well, we would be happy to discuss with you further about the topic.

Best regards,
Tobias
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Tobias Elze, PhD
Schepens Eye Research Institute
Harvard Medical School
20 Staniford Street
Boston, MA 02114

Datum: >> Montag, 23. April 2012 <<
Zeit: 16:15 Uhr
Ort:  Maschinenlaboratorium ETH Zürich
Hörsaal ML H 44
Referent: PD Dr. Ing. Frank Böhnke
Department of Otorhinolaryngology, Technical University of Munich, Germany
Thema:  Acoustic Waves in 3D Mechanic-Numerical Models of the Cochlea

The aim of this contribution is to draw the attention to the numerical modelling of the mechanical wave propagation in the human cochlea, a complex fluid-structure coupled system.

Marcus Hutter

Title: The Loss Rank Principle for Model Selection

Abstract:
A key issue in statistics and machine learning is to automatically
select the ``right'' model complexity, e.g., the number of neighbors
to be averaged over in k nearest neighbor (kNN) regression or the
polynomial degree in regression with polynomials. We suggest a novel
principle - the Loss Rank Principle (LoRP) - for model selection in
regression and classification. It is based on the loss rank, which
counts how many other (fictitious) data would be fitted better. LoRP
selects the model that has minimal loss rank. Unlike most penalized
maximum likelihood variants (AIC, BIC, MDL), LoRP depends only on
the regression functions and the loss function. It works without a
stochastic noise model, and is directly applicable to any
non-parametric regressor, like kNN.

When:  Monday, March 26  9am-10am
Where: CAB H52  map

http://www.sfn.org/am2012/

THE ORGANIZATION OF THE VERTEBRATE MOTOR SYSTEM: A NOVEL VIEW
E. Bizzi, MIT, USA
(Neuroinformatics-Colloquium)
UZH-IrcheI, Institute of Neuroinformatics, room Y35 F51, Winterthurerstrasse 190, 8057 Zürich
Friday, 23.03.12, 16.00 – 17.00

http://mcgovern.mit.edu/principal-investigators/emilio-bizzi

The speaker list for this is quite impressive.

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The Bernstein Center Tuebingen invites advanced PhD students and postdocs to apply for the... 
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Computational Vision Summer School, June 28th - July 5, 2012

Freudenstadt-Lauterbad, Black Forest

Application deadline: April 15th, 2012

http://www.bccn-tuebingen.de/events/cvss2012/
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The Computational Vision Summer School offers a broad perspective on biological vision with a thorough understanding of the theoretical and computational challenges involved. The faculty consists of renowned senior researchers in the field teaching lectures and providing hands-on tutorials on topics ranging from early vision to image understanding.

Confirmed Speakers:
Ted Adelson, Bruce Cumming, Alexei Efros, James Elder, Ralf Engbert, Thomas Euler, Michael Felsberg, Jan Koenderink, Michael Land, Stephane Mallat, Larry Maloney, Tony Movshon, Ken Nakayama, Ruth Rosenholtz, Frank Schaeffel, Eero Simoncelli, Chris Tyler, Brian Wandell

Program Chairs:
Matthias Bethge, Michael Black, Roland Fleming, Felix Wichmann

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--

Judith Lam

Executive Coordinator

Bernstein Center for Computational Neuroscience Tübingen

Eberhard Karls University of Tübingen

Max Planck Institute for Biological Cybernetics

http://www.bccn-tuebingen.de/about-bccn/contact.html

• Eye models and intraocular lenses
  
• Cornea and lens
  
• Anterior segment imaging
  
• Aberrations and retina image quality
  
• Ocular wavefront sensing
  
• Ocular biomechanics
  
• Peripheral wavefront sensing and vision
  
• Retina optics and photoreceptor function
  
• Vision and physiological optics
  
• Retinal imaging and analysis
  
• Novel instrumentation and techniques
  
• Numerical image processing
  
• Multiphoton techniques.

http://www2.kenes.com/efns/pages/home.aspx

2-6 September, 2012, Alghero, Sardina  (nice place)

 http://www.ecvp2012.uniss.it/

Abstract submission opens January 11,  closes April 1.

Feb 16,17, ETH Zürich

http://www.relab.ethz.ch/rtfMRI2012

Abstract submission is open;  ends Feb 3.
http://www.ncm-society.org/default.aspx?PageID=1056