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Volume: 3 | Article ID: art00048
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Development of an Optimized Flat-field Correction Algorithm for Digital Cameras
  DOI :  10.2352/CGIV.2006.3.1.art00048  Published OnlineJanuary 2006
Abstract

In this work we present an optimized linear algorithm for the spatial non-uniformity correction of a CCD color camera's imaging system, and the experimental methodology developed for its implementation. The influence of the algorithm's variables on the quality of the correction, that is, the dark image, the base correction image and the reference level, and the range of application of the correction, were assessed using a uniform radiance field provided by an integrator cube. The best spatial non-uniformity correction is achieved by having a non-zero dark image, using an image with a mean digital level placed in the linear response range of the camera as base correction image, and taking the mean digital level of the image as reference digital level. The response of a CCD color camera's imaging system to the uniform radiance field showed a high level of spatial uniformity after applying the optimized algorithm, which, also allowed to achieve a high quality spatial non-uniformity correction of captured images under different exposure conditions.

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Marta de Lasarte, Montserrat Arjona, Meritxell Vilaseca, Jaume Pujol, "Development of an Optimized Flat-field Correction Algorithm for Digital Camerasin Proc. IS&T CGIV 2006 3rd European Conf. on Colour in Graphics, Imaging, and Vision,  2006,  pp 241 - 246,  https://doi.org/10.2352/CGIV.2006.3.1.art00048

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Copyright © Society for Imaging Science and Technology 2006
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Conference on Colour in Graphics, Imaging, and Vision
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