Other CCPP

May 24, 2013 Friday 11:00 AM 
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

AstroCoffee

informal discussion of recent astro papers

May 24, 2013 Friday 2:30 PM 
719 Broadway, Room 1221
Other CCPP (ccpp)

VLG Seminar
Bill Freeman
MIT

Re-rendering motions: motion denoising and motion magnification

I'll describe two projects at the intersection of vision and graphics. (1) Motion denoising processes a video to remove the flickering motions common in time-lapse sequences, while revealing the long term changes. We define a cost function for rearrangments of the pixels over time and space to favor the desired processing, and use loopy belief propagation to find an approximate solution. (2) Motion magnification amplifies small motions to make them more visible. For this we use a multi-scale signal processing approach, which can be applied in real time. The magnified motions can reveal "a big world of tiny motions", showing properties of the world not otherwise visible. Both two techniques can be applied to videos of any temporal sampling rate, but motion denoising is best suited to timelapse sequences, while motion magnification matches works best for higher sampling rates (ordinary or high-speed videos).

May 28, 2013 Tuesday 11:00 AM 
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

AstroCoffee

informal discussion of recent astro papers

May 31, 2013 Friday 11:00 AM 
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

AstroCoffee

informal discussion of recent astro papers

June 5, 2013 Wednesday 2:00 PM 
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

Informal HEP Talk
Vincent Vennin
IAP, Paris

Inflationary models under the scope of Planck

An unprecedented opportunity to constrain the inflationary theory is provided by the current flow of high accuracy astrophysical data, among which are the Cosmic Microwave Background measurements by the Planck satellite. This is however a challenging project given the size of the inflationary landscape which contains hundreds of different scenarios. A reasonable approach is to consider the simplest models first, namely the slow-roll single field models with minimal kinetic terms, unless the data drive us to more complicated ones. This still leaves us with a very populated landscape, the exploration of which requires new and efficient strategies. Recently the publicly available runtime library ASPIC has been developed to implement this approach, providing all routines needed to quickly derive reheating consistent observable predictions for each of the ~70 models within this class of scenarios. In this talk I will present the status of this evolutive project, ultimately aimed at ranking the inflationary models by means of Bayesian inference. Depending on schedule, I will also show the first results of Bayesian evidences and posteriors for these models.

June 19, 2013 Wednesday 2:00 PM 
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

Special HEP Seminar
Sergio Ferrara
CERN

Duality, Black Holes and Groups of Type E7

June 26, 2013 Wednesday 2:00 PM 
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

Special HEP Seminar
Antonio Grassi
University of Piemonte Orientale

Integral Forms, Entropy Current and Thermodynamics