Monday, June 20, 2011

Compressive Sensing Coded Aperture in Space and Weak Lensing

There were many interesting presentations at  Statistical Challenges in Modern Astronomy V. But I'll present today only the three most relevant to Compressive sensing. 

The first one was the presentation of Richard Baraniuk that featured some of his recent work (third part of the presentation) that featured a pro-cons approach to compressive sensing. Then there was a presentation by Jean-Luc Stark who leads the Sparse Astro group at CEA in France that focuses on sparsity issues in astronomy. This group is interesting in the french research setting as it has its hands in influencing more directly some of the hardware that will eventually go into space.The presentation is here. I don't know if this is just me but the presentations are painful to download. Some of the slides are inserted below and present some older work and new ones:

Inpainting the COROT signals.

Results of using a compressive sensing encoding from the PACS camera on Herschel and comparison with the results of the official data pipeline (we have already talked about this before).

I think I mentioned this one a while back, but it looks like the plan is becoming more precise. The French-Chinese Gamma Ray Burst camera seems to be headed toward a compressive sensing design for its coded aperture. Wow, a real CS hardware in space (not just a software encoder).

Also in the same conference, there is the presentation of Adrienne Leonard, Francois-Xavier Dupe, and Jean-Luc Starck on Improving weak lensing reconstructions in 3D using sparsity that shows current work connecting compressive sensing and weak lensing (we mentioned it recently).

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