Title :
A CMOS video sensor for High Dynamic Range (HDR) imaging
Author :
Poonnen, Thomas ; Liu, Li ; Karia, Ketan V. ; Joyner, Michael E. ; Zarnowski, Jeffrey J.
Author_Institution :
Panavision Imaging, LLC, Homer, NY
Abstract :
A CMOS video sensor for high dynamic range (HDR) imaging is discussed. Unlike traditional memory-intensive methods for HDR imaging where frames with different exposure times are digitally combined to obtain an HDR frame, HDR imaging is accomplished in the sensor at pixel level by digitally combining sub-pixels with different exposure times to obtain an HDR pixel. In HDR mode, the prototype video sensor demonstrated a phenomenal 26 dB improvement in dynamic range over normal mode.
Keywords :
CMOS image sensors; video signal processing; CMOS video sensor; HDR frame; different exposure times; digitally combining sub-pixels; high dynamic range imaging; Ambient intelligence; CMOS image sensors; Dynamic range; FETs; Image sensors; Logic arrays; Operational amplifiers; Pixel; Sensor arrays; Sensor phenomena and characterization;
Conference_Titel :
Signals, Systems and Computers, 2008 42nd Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4244-2940-0
Electronic_ISBN :
1058-6393
DOI :
10.1109/ACSSC.2008.5074530
