Hyperspectral image detection cabin with illumination compensation, detector and detection method

Abstract

A hyperspectral image detection cabin provided with illumination compensation is disclosed. The hyperspectral image detection cabin comprises a sample table, and also comprises a lampshade the top of which is provided with a detection inlet, and at least two light sources having different spectral bands. The lampshade is disposed on the sample table. The edge of the lampshade is tightly adhered to the surface of the sample table. The inner wall of the lampshade is a diffuse reflection surface. The light sources are disposed on the sample table, and light of the light sources is emitted to the diffuse reflection surface of the lampshade. The invention also discloses a detector including the hyperspectral image detection cabin provided with illumination compensation and a method of performing spectrum image detection for small-size samples by utilizing the detector. The method improves illumination uniformity, directionality removal, and other properties, effectively compensates spectrum response effects collected by hyperspectral camera data through adjusting spectral characteristics of the light sources, builds a balanced, stable and repeatable image and spectrum detection environment, and is particularly suitable for hyperspectral image collection and spectrum calibration tests for small-size samples.

Description

technical field [0001] The invention relates to a hyperspectral detection device, in particular to a hyperspectral image detection cabin and a detector with illumination compensation, belonging to the technical field of spectral image detection. Background technique [0002] Spectral image detection technology is developed from the extension and fusion of image and spectrum optical detection technologies. It collects multi-dimensional hyperspectral image information of the target (sample) area, which can be understood as continuous multi-layer (several Ten or even thousands) of color-separated images, its one acquisition is equivalent to more than a thousand monochrome photos taken by an ordinary camera; it can also be understood as an orderly and densely arranged spectral collection group accurate to the pixel scale, which is equivalent to the collection of ordinary spectrometers millions of points of spectral data. For all tangible substances, they are composed of molecul...

AI Technical Summary

Problems solved by technology

However, in small-scale sample spectral image detection equipment, direct projection lighting sources are commonly used. This kind of detection equipment generally has defects such as uneven illumination, reflective bright spots, unable to adjust the spectrum, poor repeatability, and large environmental factors.

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