Monday, October 17, 2011

FiO 2011 - part 2

Hey everyone..

Silicon Valley

Today was a busy day. I missed much of the morning plenaries. Apparently the organizers are uploading a lot of these talks online accessible to technical registrants. So I am hoping I can catch up with these things online later.

The afternoon had some exceptional sessions. Let me tell you about a few.

There was a session called "Phase". Sounded straightforward.. and as expected, all the works discussed in this session contained phase information in some way or other. Manuel Guizar-Sicairos from the Swiss Light Source in Switzerland talked about X-ray phase imaging. He discussed coherent diffractive imaging, ptychography, and 3D phase tomography. A coherent x-ray illuminated object is imaged in the far-field and algorithms such as used in phase retrieval approaches with suitable support, translation and Fourier constraints are used to recover object information. He showed some cool pictures of objects they have imaged such as bacteria in plant root nodules, nanostructure in bones and nanostructure in cement.. (Cement and bones in the same line sound odd, no?)

There were several other very interesting talks in the session. Adam Zysk from Illinois Instiitute of Technology talked about using task based assessment of phase contrast mammography. He had an interesting Bayesian decision maker that gives the best "discrimination" of calcification or other anomalies that may be identified by radiologists from mammograms.

Donald Duncan talked about extracting phase and amplitude from DIC images. Varun Raghunath showed some interesting work on non-linear imaging of phase and amplitude at the focal plane using heterodyne four wave mixing microscopy. Chien-Hung Lu from Princeton talked about using phase retrieval methods modified to adapt to non-linear media.

Later I attended the Compressed Sensing session I discussed in my earlier post. This session was good fun with a packed room full of enthusiastic and interactive audience. Rebecca Willet (Duke), Kenneth MacCabe (Duke), Lei Tian (MIT) and Sehoon Lim (Duke) gave interesting presentations on their work. 

That's all for today! Cheerio and thanks for reading!

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