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Simulation of proposed eight-band camera for capturing multispectral images

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Abstract

Multispectral image contains much more information than regular RGB image so that it has wide applications in the field of physics, surveillance, environment monitoring or investigation of artworks. The traditional spectral imaging cameras are mainly based on broom/scanning or filter wheel imaging technologies, while those techniques share significant disadvantages of high cost and structural complexity. In this paper we proposed an eight-band multispectral camera prototype with only one CCD, which is cost-effective and high-speed for capturing the moving objects. A simulated experiment is designed to evaluate the proposed eight-band imaging system. The hyperspectral scene is firstly acquired and imaged on the CCD which generates the raw image, and then a demosaicking algorithm based on modified bilinear interpolation is employed to reconstruct the missing imaging values from the raw image, at last the demosaicked image is converted into spectral values with the conversion coefficient calculated from spectral camera characterization. In order to evaluate the proposed eight-band imaging system, the demosaicked image values and recovered spectral values are compared with the original data respectively in the form of PSNR and RRMS. In the experiment result, the eight-band multispectral camera captures spectral images successfully with high PSNR values and lower RRMS errors.

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Acknowledgements

The authors would like to acknowledge the Key Laboratory of Shaanxi Province Foundation, Natural Science Basic Research Plan in Shaanxi Province of China (No.2017JM1028), ShaanXi Postdoctoral Science Foundation(No.434016004) and XUT Science Foundation(No.2016CX031) for their support, and also thank X. Wang for those helpful suggestions.

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Authors and Affiliations

  1. School of Printing and Packing, Xi’an University of Technology, Xi’an, 710048, China

    Bangyong Sun & Congjun Cao

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  1. Bangyong Sun
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  2. Congjun Cao
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Correspondence to Bangyong Sun.

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Sun, B., Cao, C. Simulation of proposed eight-band camera for capturing multispectral images. Multimed Tools Appl 77, 10157–10169 (2018). https://doi.org/10.1007/s11042-017-5177-9

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  • DOI: https://doi.org/10.1007/s11042-017-5177-9

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