EMCCD color correction based on spectral sensitivity analysis

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 pro...

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Bibliographic Details
Published in:Multimedia tools and applications 2016-07, Vol.75 (13), p.7589-7604
Main Authors: Son, Jongin, Kang, Minsung, Min, Dongbo, Sohn, Kwanghoon
Format: Article
Language:English
Subjects:
Analysis
Cameras
CCD cameras
Channels
Color
Computer Communication Networks
Computer Science
Data Structures and Information Theory
Distortion
Image processing systems
Imaging
Light
Lighting
Multimedia
Multimedia Information Systems
Noise
Semiconductors
Sensitivity analysis
Sensors
Special Purpose and Application-Based Systems
Spectral sensitivity
Studies
Citations: Items that this one cites
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Summary: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.
ISSN:1380-7501
1573-7721
DOI:10.1007/s11042-015-2682-6