Computational Image Sensors


The ability to image is indispensible to scientific discovery. The image sensor, or simply imager, is responsible for converting an optical image into an electrical signal. Imagers vary in performance and size, from the smallest found in web cameras to large ones on space telescopes. Although the imager in its most basic form consists of the pixel array, it is increasing common to feature application specific computational capabilities. Presently, imagers suffer from limited sensitivity, dynamic range, frame rate, spatial resolution, and uniformity for the most demanding applications, such as microscopy, astronomy, and optical measurement.


The goal of this project is to design, fabricate, and characterize novel pixel and imager architecture for high performance current and emerging imaging applications. In particular, we will investigate novel imaging capabilities enabled by computational units that are tightly coupled to pixel array. Our approach is to take advantage of the CMOS technology by integrating photo detection, signal processing, and computation all on the same silicon chip.


Techniques for high-performance computational scientific imagers will enable stellar reproduction of objects, accurate optical measurement, and new imaging capabilities.


Areas of study: scientific imager design, computational photography, image processing

Supervisor: Dr. Derek HO (derekho@cityu.edu.hk; www.atomstosystems.com)

Suitable for: M.Phil./Ph.D.