• Title/Summary/Keyword: Sigma Filter(SF)

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Algorithm of Adaptive Noise Reduction with Modified Sigma Filter for Reduction of Edge Blurring and Minute Noises (윤곽선 훼손 방지 및 미세잡음 제거를 위한 Modified Sigma Filter를 이용한 적응적 잡음 제거장치 알고리즘)

  • Yang, Jeong-Ju;Han, Hag-Yong;Yang, Hoon-Gee;Kang, Bong-Soon;Lee, Gi-Dong
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.14 no.10
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    • pp.2261-2268
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    • 2010

  • The information captured by imaging devices such as CCD or CIS may contain external noises through the processes of passing signals or storing images. In this paper, we propose a Modified Sigma Filter (MSF) algorithm to reduce such noises. In experiment, we verified that our MSF algorithm showed better performance in PSNR and 1D plot of simulation results compared with Gaussian Filter (GF), Local Sigma Filter (LSF). Tested images include random Gaussian Noises.

  • https://doi.org/10.6109/jkiice.2010.14.10.2261 인용 PDF KSCI

Design methodology of analog circuits for a digital-audio-signal processing 1-bit ？？？？ DAC (디지털 오디오 신호처리용 1-bit Δ$\Sigma$ DAC 아날로그 단의 설계기법)

  • 이지행;김상호;손영철;김선호;김대정;김동명
    • Proceedings of the IEEK Conference
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    • 2002.06b
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    • pp.149-152
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    • 2002

  • The performance of a 1-bit DAC depends on that of the analog circuits. The mixed SC-CT (switched capacitor-continuous time) architecture is an effective design methodology for the analog circuits. This paper Proposes a new buffer scheme for the 1-bit digital-to-analog subconverter and a new SF-DSC(smoothing filter and differential-to-sig le converter) which performs both the smoothing filter and the differential-to-single convertor simultaneously.

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