Multispectral imaging utilizing LCTF technology for plant disease detection

Lixun Tian; Ningfang Liao; Ali Chai; Boneng Tan; Deqi Cui; Jiajia Wang

doi:10.1117/12.900316

18 August 2011 Multispectral imaging utilizing LCTF technology for plant disease detection

Lixun Tian, Ningfang Liao, Ali Chai, Boneng Tan, Deqi Cui, Jiajia Wang

Proceedings Volume 8194, International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications; 81941U (2011) https://doi.org/10.1117/12.900316
Event: International Symposium on Photoelectronic Detection and Imaging 2011, 2011, Beijing, China

Abstract

The aim of this paper is to pave the way for the establishment of analysis of the lights reflected from the leaf's surface as an analytical method of plant disease. An imaging LCTF spectrometer that covers a visible light with 400-720 nm wavelength bands has been developed. This paper first outlines the structure of imaging LCTF spectrometer, including their operational principles and construction. Next, various spectral images acquired using the LCTF spectrometer in laboratory environment experiments to measure spectral characteristics of rays reflected from cucumber leaves surfaces that are infected by different germs are analyzed. Then, the results of the experiments conducted using the imaging spectrometer are shown, including the analyzed relative radiance of rays reflected from the plants, and spectral images acquired at various wavelengths. These experimental results demonstrate clearly that rays reflected from plant contaminated by different disease germs have different spectral properties.

Citation Download Citation

Lixun Tian, Ningfang Liao, Ali Chai, Boneng Tan, Deqi Cui, and Jiajia Wang "Multispectral imaging utilizing LCTF technology for plant disease detection", Proc. SPIE 8194, International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, 81941U (18 August 2011); https://doi.org/10.1117/12.900316

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KEYWORDS

Spectroscopy

Multispectral imaging

CCD cameras

Imaging systems

Liquid crystals

Optical filters

Reflectivity

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