Back to articles
Articles
Volume: 26 | Article ID: art00012
Image
Using Chromaticity Error Minimisation for Fast Camera Spectral Responsivity Measurement
  DOI :  10.2352/ISSN.2169-2629.2018.26.67  Published OnlineNovember 2018
Abstract

Measuring the spectral responsivity of a camera using a monochromator is time-consuming and expensive. This work evaluates afast responsivity measurement method, where diffraction spectrum images are captured and then used for estimating camera responsivity. An error was noticed in the previously proposed measurement method that was caused by spectroradiometer measurement errors and vignetting effects from the camera's lens and sensor. Therefore, a correction step using chromaticity error minimisation is presented to adjust the initial responsivity estimate. It requires a chart to be captured under a known illumination. The chromaticity error of the improved procedure is approximately one order of magnitude smaller than the original error. This enhanced method was employed to create a dataset of spectral responsivities for machine vision, photographic, and movie cameras, which is presented here.

Subject Areas :
Views 23
Downloads 1
 articleview.views 23
 articleview.downloads 1
  Cite this article 

Andreas Karge, Ingmar Rieger, Bernhard Eberhardt, Andreas Schilling, "Using Chromaticity Error Minimisation for Fast Camera Spectral Responsivity Measurementin Proc. IS&T 26th Color and Imaging Conf.,  2018,  pp 67 - 74,  https://doi.org/10.2352/ISSN.2169-2629.2018.26.67

 Copy citation
  Copyright statement 
Copyright © Society for Imaging Science and Technology 2018
72010350
Color and Imaging Conference
color imaging conf
2166-9635
Society for Imaging Science and Technology