Prof. Tian gives invited seminar at Dept. of Applied Physics of Yale Univ.
Prof. Tian gives invited seminar at Dept. of Applied Physics of Yale Univ.
Computational imaging for real-time Gigapixel and 3D wave-field microscopy
Event location: FOE Student Center
Event time: Friday, April 22, 2016 – 11:00am – 12:00pm
Sponsor: “The Flint Fund Series on Quantum Devices and Nanostructures”
Computational imaging is a new frontier of imaging technology that overcomes fundamental limitations of conventional systems by jointly designing optics, devices, signal processing, and algorithms. In this talk, I will present recent advancements in computational wave-field imaging that enable Gigapixel and 3D phase microscopy capability, breaking the limit of space-time-bandwidth product in traditional systems. In particular, I will describe a computational microscopy platform that implements coded illumination and nonlinear phase retrieval algorithms to reconstruct wide field-of-view and high-resolution phase images. Further, new illumination multiplexing techniques reduce data requirements by one order of magnitude, and acquisition times from minutes to sub-second. Experiments demonstrate quantitative dynamic imaging of rare events across multiple scales in both space and time. Finally, new 3D wave-optical model and reconstruction technique allow Gigavoxel reconstruction of 3D objects, achieving lateral resolution and depth sectioning well beyond the physical limit of traditional systems. Such computational imaging approach creates significant new capabilities by integrating hardware and computation at the system level. It promises wide applications, such as biomedicine, metrology, inspection, security and X-ray.