Sep. 2010

Article Contents

Chinese Optics> 2010> 3(4): 374-378.

LI Jing, WANG Yun-shan, SI Shu-chun, XU Jian-qiang, GAO Cheng-yong, ZHOU Can-Lin. Active hyperspectral imaging system based on digital filtering and its calibration[J]. Chinese Optics, 2010, 3(4): 374-378.

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Active hyperspectral imaging system based on digital filtering and its calibration

School of Physics,Shandong University,Jinan 250100,China

Received Date:12 Mar 2010
Rev Recd Date:16 May 2010
Publish Date:25 Aug 2010

Abstract

Abstract

A novel active hyperspectral imaging system in which a digital filter is specially designed as a creative component is developed for calculating the spectral cube and spectral response of an object. Based on the refit of a general WDF Wadsworth monochromator, the system enhances the exit flux and improves the optical intensity radiated on the object when the light incident keeps a constant. Furthermore, the optical narrowband filter is replaced by a digital filter. The hyperspectral imaging system resolves the problem of the system with a number of optical filters which can not be adjusted continuously, and it has lower cost than other filters. Meanwhile, the system is easy to implement, wavelength tunable, and band variable. According to the characters of the system and image gathering, the calculation method is supplied and the inaccuracy is less than 2 nm. The spectral cube and response of green leaves are successfully achieved, and the system is suitable for the spectral measurements with a small view in laboratory.
- hyperspectral imaging,
- digital filtering,
- wavelength calibration,
- spectral image

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References

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