Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 129, Issue 2, Pages 977-984Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2007.09.036
Keywords
optical system; non-contact; imaging spectroscopy; linear discriminant analysis; material classification
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A non-intrusive and non-contact system for the real time detection of spurious elements in raw material processing chains for industrial environments is presented. Observation line spectrographs, obtained from the visible-near infrared (Vis-NIR) reflectance of the material under study, are obtained using a dual spatial-spectral technique. Therefore, a huge amount of information is involved in the process and an efficient classification algorithm would be a great asset. In this paper, the validity of Fisher's linear discriminant for this application is investigated. The technique has been successfully tested on the tobacco industry. However, the technique is not limited to tobacco leaves, but other materials can additionally be discriminated or classified. (c) 2007 Elsevier B.V. All rights reserved.
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