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30 September 1996 Space-time-domain median filtering in low-light-level noise processing
Qian Chen, Lianfa Bai, Guohua Gu, Yu Wang
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Proceedings Volume 2898, Electronic Imaging and Multimedia Systems; (1996) https://doi.org/10.1117/12.253394
Event: Photonics China '96, 1996, Beijing, China
Abstract
The random flicker noise is the main character of low-light- level (LLL) image, so the noise suppressing is a key technique for LLL image processing. In this paper, the noise sources and its characteristics of LLL image are studied, and varied existing noise processing techniques are analyzed. On the basis of these, a novel filtering approach, space-time domain median filter, is presented. In this approach, the time correlation of LLL TV image is utilized and the time domain median filter is combined with the space domain median filter. Therefore the LLL image noise is reduced significantly, and the quality of LLL image is improved greatly.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Qian Chen, Lianfa Bai, Guohua Gu, and Yu Wang "Space-time-domain median filtering in low-light-level noise processing", Proc. SPIE 2898, Electronic Imaging and Multimedia Systems, (30 September 1996); https://doi.org/10.1117/12.253394
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KEYWORDS
Digital filtering
Image filtering
Image processing
Image quality
Nonlinear filtering
Ions
Signal to noise ratio
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