Method for Indirect Measurement of Spectral Reflectance of Insect Body Surface

Abstract

The invention discloses a method for indirectly measuring the spectral reflectance of an insect body surface, which comprises the following steps: using a spectrophotometer to measure the spectral reflectance on the surface of a correction plate to obtain the spectral reflectance r on the surface of the correction plate; A light source is placed on the left and right sides of the plate, and the light from the two light sources is projected onto the surface of the correction plate. Directly in front of the calibration plate and on the same side as the two light sources, the measurement direction of the spectroradiometer is perpendicular to the surface of the calibration plate, forming a 45°x:0° illumination and measurement geometry with the light source; use the spectroradiometer to measure insect bodies Spectral radiance l reflected by the surface s and the spectral radiance l reflected by the correction plate surface c ; Calculate the spectral reflectance of the insect body surface. The invention has the characteristics of simple and convenient operation, easy implementation and guaranteed measurement accuracy.

Description

technical field [0001] The invention relates to the technical field of object surface reflection spectrum measurement, in particular to a method for indirect measurement of insect body surface spectral reflectance, which is simple and convenient to operate, easy to implement and capable of ensuring measurement accuracy. Background technique [0002] There are many kinds of insects, and some insects have strong similarities. It is difficult to effectively distinguish them only by color, morphological characteristics and texture, so that it is impossible to control harmful insects in a targeted manner. However, the reflectance spectra of different insects are usually quite different, including the amplitude and shape of the spectrum. [0003] Existing instruments for measuring the spectral reflectance of the surface of an object are generally contact-type, that is, the measuring hole should be in close contact with the object to be measured, but the torso of the insect is soft...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of complex operation, difficult implementation and inaccurate measurement results in the existing contact instruments for measuring the spectral reflectance of the object surface in the prior art, and provides a simple and convenient operation, easy implementation and Method for Indirect Measurement of Spectral Reflectance of Insect Body Surface with Guaranteed Measurement Accuracy

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