Airborne pine wood nematode and withered tree detection high-resolution spectral imaging camera and method

Abstract

The invention discloses an airborne pine wood nematode and withered tree detection high-resolution imaging spectrum camera and method. The imaging spectrum camera comprises an RGB camera and three industrial cameras which face the same direction. On the basis of combining spectral characteristics of pine wood nematode withered trees, optical filters with the wave band width of 30 nm on the 545 nm wave band and the 750 nm wave band and optical filters with the wave band width of 14 nm on the 670 nm wave band are selected; after the obtained grayscale images of the three wavebands are subjected to waveband alignment, the reflectivity is converted, a complete image is obtained, and the pine wood nematode dead tree can be displayed in a highlight mode; compared with a hyperspectral detection scheme using 4nm spectral resolution in all wavebands in the prior art, the method has the advantage that the detection cost of the withered pine wood nematode trees is remarkably reduced. In addition, an industrial camera with higher spatial resolution is used, and detection of large-area pine wood nematode dead trees can be completed at the high altitude of 600 m.

Description

technical field [0001] The invention belongs to the technical field of instrument science and forest protection, and specifically relates to an airborne high-resolution spectral imaging camera and method for detecting pine wood nematode dead trees. Optimal, and considering the large-area operation requirements carried by drones, choose high-spatial-resolution industrial cameras + specific band methods, and integrate RGB color cameras + high-precision GPS to provide positioning and determine the specific latitude, longitude and altitude of diseased plants , to meet the requirements of pine wood nematode dead tree location and identification. Background technique [0002] Pine xylophilus is transmitted by vector insects such as Monochamus alternatus, which causes pine xylophilus disease. Infected pine trees have needles that quickly turn from green to tan or reddish brown, and the entire plant dries up and dies, eventually rotting. At present, pine wood wilt disease caused b...

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Problems solved by technology

[0008] The purpose of the present invention is to solve the problems existing in the above-mentioned several current detection methods of pine wood nematode dead trees, and provide a method that is specially used for the detection of pine wood nematode dead trees through band optimization, and satisfies the spatial resolution of each pixel not less than 0.15. m, UAV-borne spectral imaging camera suitable for large-area operations at an altitude of 600m and its detection method for pine xylophilus dead trees

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