A White-RGB CFA-Patterned CMOS Image Sensor with Wide Dynamic Range

A White-RGB CFA-Patterned CMOS Image Sensor with Wide Dynamic Range

CMOS image sensors is important for mobile phone cameras. But, when very small pixel sizes are used, the sensor SNR is limited by photon shot noise. In order to improve the sensor SNR Honda and Luo proposed the use of a sensor with a white (W) pixel in the color filter area. The white pixel, however...

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Hauptverfasser: Egawa, Yoshitaka, Tanaka, Nagataka, Kawai, Nobuhiro, Seki, Hiromichi, Nakao, Akira, Honda, Hiroto, Iida, Yoshinori, Monoi, Makoto
Format: Tagungsbericht
Sprache:eng
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Cameras
CMOS image sensors
CMOS technology
Color
Colored noise
Computational Intelligence Society
Dynamic range
Filters
Image sensors
Sensor arrays
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creator Egawa, Yoshitaka
Tanaka, Nagataka
Kawai, Nobuhiro
Seki, Hiromichi
Nakao, Akira
Honda, Hiroto
Iida, Yoshinori
Monoi, Makoto
description CMOS image sensors is important for mobile phone cameras. But, when very small pixel sizes are used, the sensor SNR is limited by photon shot noise. In order to improve the sensor SNR Honda and Luo proposed the use of a sensor with a white (W) pixel in the color filter area. The white pixel, however, saturates at low light levels and sufficient dynamic range cannot be obtained as a result. In order to overcome the dynamic range problem, we propose a CIS with a WRGB color filter array (two white pixels per 2x2 block) incorporating the wide dynamic-range (WDR) technology.
doi_str_mv 10.1109/ISSCC.2008.4523052
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subjects Cameras
CMOS image sensors
CMOS technology
Color
Colored noise
Computational Intelligence Society
Dynamic range
Filters
Image sensors
Sensor arrays
title A White-RGB CFA-Patterned CMOS Image Sensor with Wide Dynamic Range
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