1 research outputs found
A closed-loop all-electronic pixel-wise adaptive imaging system for high dynamic range video
We demonstrated a CMOS imaging system that adapts each pixel's exposure and
sampling rate to capture high dynamic range (HDR) videos. The system consist of
a custom designed image sensor with pixel-wise exposure configurability and a
real-time pixel exposure controller. These parts operate in a closed-loop to
sample, detect and optimize each pixel's exposure and sampling rate to minimize
local region's underexposure, overexposure and motion blurring. Exposure
control is implemented using all-integrated electronics without external
optical modulation. This reduces overall system size and power consumption.
The image sensor is implemented using a standard 130nm CMOS process while the
exposure controller is implemented on a computer. We performed experiments
under complex lighting and motion condition to test performance of the system,
and demonstrate the benefit of pixel-wise adaptive imaging on the performance
of computer vision tasks such as segmentation, motion estimation and object
recognition.Comment: 9 pages, 8 figure