NDLI: A robust approach to reconstruct experimentally the camera response function

Content Provider	IEEE Xplore Digital Library
Author	Bevilacqua, A. Gherardi, A. Carozza, L.
Copyright Year	2008
Description	Author affiliation: Adv. Res. Center on Electron. Syst., Univ. of Bologna, Bologna (Bevilacqua, A.; Gherardi, A.; Carozza, L.)
Abstract	Many methods are known in literature to reconstruct the camera response function (RF), whether they use calibration chart or images of arbitrary scenes taken at different exposures. This works in case to have at one's disposal a camera with enough exposure steps to capture the whole dynamic range of the scene, representatively. However, in case of entry-level or low quality cameras, the resolution in the shutter time range of variation could yield just a reduced set of samples. Here we propose additional constraints to a well known method to reconstruct a RF even in the case that just a reduced set of exposures is available. Extensive experiments carried out using both a low quality and a professional camera commonly used in computer vision applications show the improvement achieved by our method in the reconstructed RF in case of few samples.
Starting Page	1
Ending Page	6
File Size	3187618
Page Count	6
File Format	PDF
ISBN	9781424433216
DOI	10.1109/IPTA.2008.4743778
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-11-23
Publisher Place	Tunisia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radio frequency Image sensors Performance evaluation Layout Cameras Radiometry Robustness Image reconstruction Sensor arrays Light sources
Content Type	Text
Resource Type	Article

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