TY - JOUR
T1 - EMCCD color correction based on spectral sensitivity analysis
AU - Son, Jongin
AU - Kang, Minsung
AU - Min, Dongbo
AU - Sohn, Kwanghoon
N1 - Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (NRF-2013R1A2A2A01068338).
Publisher Copyright:
© 2015, Springer Science+Business Media New York.
PY - 2016/7/1
Y1 - 2016/7/1
N2 - 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.
AB - 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.
KW - Color correction
KW - EMCCD
KW - Spectral sensitivity
UR - http://www.scopus.com/inward/record.url?scp=84929909910&partnerID=8YFLogxK
U2 - 10.1007/s11042-015-2682-6
DO - 10.1007/s11042-015-2682-6
M3 - Article
AN - SCOPUS:84929909910
SN - 1380-7501
VL - 75
SP - 7589
EP - 7604
JO - Multimedia Tools and Applications
JF - Multimedia Tools and Applications
IS - 13
ER -