Engineering Colloquium: Snap-Shot 3D Cameras

Feb 16, 2023 , 4:00pm - 5:00pm
Department of Engineering
Contact Email

Dr. Weijian Yang
Associate Professor
Department of Electrical and Computer Engineering, University of California, Davis

Abstract: Three-dimensional (3D) imaging through a compact device could enable many applications in mobile consumer electronics and biomedical endoscopy. Conventional 3D cameras are bulky and require taking multiple photos to synthesize a 3D scene. Here, I will introduce a new type of 3D camera. It replaces all the bulk optics by a single layer of optical mask and can be made very compact. It takes a snap-shot of the 3D object or scene, and then recovers the 3D information through computational algorithms. Here, I will discuss the two 3D cameras that we recently developed, which can image 3D microscopic objects or 3D macroscopic scenes. Both cameras are composed of a single piece of randomly positioned microlens array and an image sensor. We develop highly-efficient computational algorithms to reconstruct the 3D objects and 3D scenes from a single camera exposure. Our 3D cameras open new avenues for high speed 3D imaging with a compact device footprint.

Bio: Weijian Yang is an associate professor at the Department of Electrical and Computer Engineering at the University of California, Davis. He received his undergraduate degree from Peking University and a PhD from the University of California, Berkeley, all in Electrical Engineering. After postdoctoral training in neuroscience at Columbia University, Dr. Yang started his own laboratory at UC Davis in late 2017. His current research aims to develop advanced optical methods and neurotechnologies to interrogate and modulate brain activity, with a goal to understand how neural circuits organize and function and how behaviors emerge from neuronal activity. He is a recipient of the Career Awards at the Scientific Interface from Burroughs Wellcome Fund in 2016, the Early Career Award from National Science Foundation in 2019, and the Science and PINS Prize for Neuromodulation (second prize) from American Association for the Advancement of Science in 2021.


Each spring and fall, the Engineering Department at SSU presents a series of colloquia on a wide range of engineering topics and trend of technologies. The talks are generally very high-level and designed for the general audience. The Engineering Colloquium was established in Fall 2006 and was initially sponsored by former Agilent Technologies (now Keysight Technologies) and local industries.

Days & Dates: First and Third Thursday of every month
Zoom ID:
Lecture: 4:00 to 5:00 p.m. including Q &A

For more information, please contact the ES Department at (707) 664-2030 or sends e-mail).

A portrait of Dr. Weijian Yang smiling
Forward to Friends
February 16, 2023
Add to Calendar