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We demonstrated a CMOS imaging system that adapts each pixel's exposure andsampling rate to capture high dynamic range (HDR) videos. The system consist ofa custom designed image sensor with pixel-wise exposure configurability and areal-time pixel exposure controller. These parts operate in a closed-loop tosample, detect and optimize each pixel's exposure and sampling rate to minimizelocal region's underexposure, overexposure and motion blurring. Exposurecontrol is implemented using all-integrated electronics without externaloptical modulation. This reduces overall system size and power consumption.  The image sensor is implemented using a standard 130nm CMOS process while theexposure controller is implemented on a computer. We performed experimentsunder complex lighting and motion condition to test performance of the system,and demonstrate the benefit of pixel-wise adaptive imaging on the performanceof computer vision tasks such as segmentation, motion estimation and objectrecognition.

A closed-loop all-electronic pixel-wise adaptive imaging system for high dynamic range video