Accuracy of the reflectance spectrum recovery in a light-emitting diode-based multispectral imaging system

Laure Fauch; Ervin Nippolainen; Alexei A. Kamshilin

doi:10.1117/1.OE.51.5.053201

4 May 2012 Accuracy of the reflectance spectrum recovery in a light-emitting diode-based multispectral imaging system

Laure Fauch, Ervin Nippolainen, Alexei A. Kamshilin

Author Affiliations +

Optical Engineering, Vol. 51, Issue 5, 053201 (May 2012). https://doi.org/10.1117/1.OE.51.5.053201

Abstract

We present a study of parameters that affect the accuracy of a reflectance spectrum recovery from the compressed data obtained in a multispectral imaging (MSI) system consisting of a computer-controlled set of light-emitting diodes (LEDs) synchronously switched with a digital monochrome camera. The system allows recovery of a two-dimensional distribution of reflection spectra in a wide spectral range (400 to 700 nm) just from a few captured frames. It is shown that the MSI system designed and assembled by students in a University laboratory is capable of measuring of absolute values of smooth reflectance spectra with an error smaller than 3%. Further, the increasing of the system accuracy could be achieved by providing higher spatial uniformity and higher overlapping of object illumination by all the LEDs.

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Laure Fauch, Ervin Nippolainen, and Alexei A. Kamshilin "Accuracy of the reflectance spectrum recovery in a light-emitting diode-based multispectral imaging system," Optical Engineering 51(5), 053201 (4 May 2012). https://doi.org/10.1117/1.OE.51.5.053201

Published: 4 May 2012

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