Alternating Projection, Ptychography and High Dimensional Phase Retrieval
Time and place
1 PM on Wednesday, February 26th, 2014; NAC 6113
Hau-tieng Wu (Stanford University)
Abstract
We demonstrate the global convergence of the alternating projection algorithm which has been open for 40+ years. Additionally, for the ptychographic imaging problem, we discuss phase synchronization and connection graph Laplacian as well as their theoretical properties, and show how to construct an accurate initial guess to accelerate convergence speed to handle the big imaging data in the coming new light source era. This is a joint work with Stefano Marchesini and Yu-Chao Tu.
