Binary Pixel and High Dynamic Range Imaging

T_Vogelsang

Thomas Vogelsang

(Rambus)


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Date: 4/16/2013

Description:

Modern image sensors, especially in devices like mobile phones, are using smaller and smaller pixels. The resulting reduced full well capacity limits the possible dynamic range significantly. Spatial and temporal oversampling based on the concept of binary pixels is a way to overcome this limitation. It is an approach to achieve high dynamic range imaging in a single exposure using small pixels.The concept of binary pixels has been initially proposed by Eric Fossum now at Dartmouth College. Feng Yang et al. of EPFL have developed the first theory of binary oversampling based on photon statistics. We have developed these initial proposals further to enable feasibility in today’s image sensor technology while maintaining the theoretical understanding based on photon statistics which has been key to the development of this technology.In this talk I will describe the theory behind binary pixel and show how to achieve good low light sensitivity together with high dynamic range. Then I will give examples how this technology can be implemented using today’s technology and show a roadmap to take advantage of further developments of image sensor technology.




Created: Tuesday, April 16th, 2013