| Paper Abstract and Keywords |
| Presentation |
2016-09-26 15:20
RTS and photon shot noise reduction based on maximum likelihood estimate with a multi-aperture camera and semi-photon-counting-level CMOS image sensors
Haruki Ishida, Keiichiro Kagawa, Min-Woong Seo (Shizuoka Univ.), Takashi Komuro (Saitama Univ.), Bo Zhang, Taishi Takasawa, Keita Yasutomi, Shoji Kawahito (Shizuoka Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
We are aiming at realizing an ultra-high sensitivity low-noise camera with a semi-photon-counting-level CMOS image sensor and a fast lens that has an F-number much less than 1, which is hard to implement in a single-aperture optical system. The noise of CMOS image sensor is approaching the level where they can measure a single photon. However, it is difficult to further reduce the noise of all pixels because a certain part of the pixels have the large low-frequency noise called random telegraph signal (RTS) noise generated by source follower transistors. In this study, we model the sensor noise and photon shot noise of each pixel as a probability distribution function based on the measured read noise, where RTS is included. By using the maximum likelihood estimate (MLE), we attempted to decrease both RTS noise and photon shot noise. In the simulation, we confirmed that the MLE shows better noise reduction capability compared with simple averaging and selective averaging. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
multi-aperture / ultra-high sensitivity camera / photon-counting-level CMOS image sensor / RTS noise / photon shot noise / maximum likelihood estimate / / |
| Reference Info. |
ITE Tech. Rep., vol. 40, no. 32, IST2016-45, pp. 15-18, Sept. 2016. |
| Paper # |
IST2016-45 |
| Date of Issue |
2016-09-19 (IST) |
| ISSN |
Print edition: ISSN 1342-6893 Online edition: ISSN 2424-1970 |
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