时间：2015年5月26日下午 14：00-16：00
地点：教三338
报告题目：X-ray phase imaging using structured illumination based on Transport of Intensity
报告人：Dr. Yunhui Zhu from MIT
摘要：
Transport of Intensity Equation (TIE) has been widely used as a simple yet powerful quantitative phase imaging technique. The relatively simple setup and low requirement for source coherence render this technique to be widely used in X-ray imaging applications. In this talk, Dr. Zhu will review the basics of TIE phase imaging and further introduce the technique of structured illuminated TIE phase imaging. Installed using off-the-shelf anti-scattering grid, structured illumination can significantly increase the optical response of the phase signal, especially at low-spatial frequency region. As a result, it solves the long-standing haze noise corruption problem in conventional TIE phase imaging. The use of structured illumination also corrects for the circulation errors that commonly appear in conventional TIE imaging, in the case of strong absorption in phase objects. Moreover, designed structured illumination can be actively used to manipulate the image spectrum. Applications based on designed structured illuminated TIE will be discussed; including superresolution phase imaging and single shot-based multiple phase/absorption imaging.
简历：
Dr. Yunhui Zhu received her B.S in physics from Peking University in 2007, and received her Ph.D. in physics from Duke University in 2013. She is currently a post-doctoral fellow in Professor Barbastathis’ group in the department of Mechanical Engineering at MIT. Her research has been focusing on information processing in optical systems, including nonlinear optical fiber communication channel, quantum temporal imaging and X-ray phase imaging for security and medical applications. She has received Gordy Fellowship of Duke Physics twice during her Ph. D. study.
