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EMCCD color correction based on spectral sensitivity analysis

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Abstract

The sensor response function of a color camera is very essential to understand an overall camera imaging pipeline and to process captured images. It is also true when we characterize underlying imaging behaviors of the electron multiplying charge coupled device (EMCCD) camera, which was recently proposed to acquire color images in low-light-level conditions. Unlike existing CCD cameras, the EMCCD camera contains partially uni-modal spectral sensitivity functions (SSFs), some of which consists of two base (bi-modal) functions, thus often leading to a serious color distortion in existing characterization techniques. To address this problem, we propose a novel method that corrects output colors of the EMCCD camera by analyzing its partially uni-modal characteristics. Specifically, our goal is to correct such color distortion by adjusting bi-modal SSFs to be uni-modal. We remove the secondary region of bi-modal channels using a pre-calculated spectral sensitivity of the EMCCD camera. Experimental results demonstrate that the proposed method reduces the color distortion as well as enlarges a color gamut, which is crucial to color reproduction.

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Acknowledgments

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (NRF-2013R1A2A2A01068338).

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Authors and Affiliations

  1. Department of Electrical and Electronic Engineering, Yonsei University, Seoul, 120-749, Korea

    Jongin Son, Minsung Kang, Dongbo Min & Kwanghoon Sohn

  2. Department of Computer Science and Engineering, Chungnam National University, Daejeon, 305-764, Korea

    Dongbo Min

Authors
  1. Jongin Son
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  2. Minsung Kang
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  3. Dongbo Min
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  4. Kwanghoon Sohn
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Correspondence to Kwanghoon Sohn.

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Son, J., Kang, M., Min, D. et al. EMCCD color correction based on spectral sensitivity analysis. Multimed Tools Appl 75, 7589–7604 (2016). https://doi.org/10.1007/s11042-015-2682-6

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  • DOI: https://doi.org/10.1007/s11042-015-2682-6

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