Application of multispectral systems for the diagnosis of plant diseases

Jie Feng; Ningfang Liao; Guolong Wang; Yongdao Luo; Minyong Liang

doi:10.1117/12.791278

5 March 2008 Application of multispectral systems for the diagnosis of plant diseases

Jie Feng, Ningfang Liao, Guolong Wang, Yongdao Luo, Minyong Liang

Proceedings Volume 6623, International Symposium on Photoelectronic Detection and Imaging 2007: Image Processing; 66230E (2008) https://doi.org/10.1117/12.791278
Event: International Symposium on Photoelectronic Detection and Imaging: Technology and Applications 2007, 2007, Beijing, China

Abstract

Multispectral imaging technique combines space imaging and spectral detecting. It can obtain the spectral information and image information of object at the same time. Base on this concept, A new method proposed multispectral camera system to demonstrated plant diseases. In this paper, multispectral camera was used as image capturing device. It consists of a monochrome CCD camera and 16 narrow-band filters. The multispectral images of Macbeth 24 color patches are captured under the illumination of incandescent lamp in this experiment The 64 spectral reflectances of each color patches are calculated using Spline interpolation from 400 to 700nm in the process. And the color of the object is reproduced from the estimated spectral reflectance. The result for reproduction is contrast with the color signal using X-rite PULSE spectrophotometer. The average and maximum ΔΕ^*_ab are 9.23 and 12.81. It is confirmed that the multispectral system realizes the color reproduction of plant diseases from narrow-band multispectral image.

Citation Download Citation

Jie Feng, Ningfang Liao, Guolong Wang, Yongdao Luo, and Minyong Liang "Application of multispectral systems for the diagnosis of plant diseases", Proc. SPIE 6623, International Symposium on Photoelectronic Detection and Imaging 2007: Image Processing, 66230E (5 March 2008); https://doi.org/10.1117/12.791278

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KEYWORDS

Cameras

Multispectral imaging

Color reproduction

Reflectivity

Lamps

Imaging systems

Optical filters

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