By Topic

Design based on two-frame composition for high dynamic range CMOS image sensor

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Meizhen Sang ; Sch. of Electron. & Inf. Eng., Tianjin Univ., Tianjin, China ; Jiangtao Xu ; Suying Yao

An algorithm based on synthesis of two frame images is proposed to expand the dynamic range of CMOS image sensors. By changing the exposure time, a long-exposure and a short-exposure frame are captured and digitally integrated into one high dynamic range (HDR) image with the method of weighting summation. The exposure time can be adjusted according to the scene. The weighting factors are self-adapting to prevent pixel saturation and eliminate image flicker. Using long exposure time 24ms and short exposure time 3ms, the dynamic range is increased by 18dB, peak signal noise ratio (PSNR) can reach to 19.1850, and signal to noise ratio (SNR) is 14.6527. Results show that the dynamic range gain is between 13dB and 32dB without SNR and PSNR reduced.

Published in:

Electron Devices and Solid-State Circuits (EDSSC), 2011 International Conference of

Date of Conference:

17-18 Nov. 2011