A self-scanning hyperspectral imaging system adapted to various underwater observation platforms and its application method
A hyperspectral imaging and observation platform technology, which is applied in the field of self-scanning hyperspectral imaging system, can solve the problems of affecting image quality, large difference in frame positions before and after spectral images, and difficult geometric correction, etc., to achieve geometric deformation and good impact resistance The effect of power and simple structure
Active Publication Date: 2022-04-22
OCEAN UNIV OF CHINA
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Problems solved by technology
The push-broom hyperspectral imager acquires the spectral image data of the target through platform movement, but the hyperspectral push-broom imaging method is extremely sensitive to attitude and position changes. During the imaging process, due to the influence of the observation platform movement and the underwater environment, the spectral image The position difference between the front and rear frames is large, and geometric correction is difficult
This error will seriously affect the image quality, and sometimes even cause the image to be unreadable, seriously affecting the normal application of the image
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[0043] Such as figure 1 As shown, a hyperspectral imaging system adapted to various underwater observation platforms includes a telecentric underwater telescopic imaging unit 1, a spectral imaging unit 2, a detection unit 3 and a built-in scanning unit 4; the telecentric underwater The lower telescopic imaging unit 1 is connected to the spectral imaging unit 2 through the incident slit 5, and the spectral imaging unit 2 images the image and wavelength division formed by the upper telecentric underwater telescopic imaging unit 2 on the incident slit 5 on the spectrometer detection unit 3 superior.
[0044] The hyperspectral imaging system adapted to various underwater observation platforms includes two acquisition modes: (1) built-in scanning imaging; the telecentric underwater telescopic imaging unit 1 is fixed on the built-in scanning unit 4 , the relative movement with the spectral imaging unit 2 is realized through the built-in scanning unit 4 . It is suitable for observ...
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The invention relates to a self-scanning hyperspectral imaging system adapted to various underwater observation platforms and a use method thereof, belonging to the field of underwater hyperspectral optical imaging detection. The system includes a telecentric underwater telescopic imaging unit, a spectral imaging unit and a built-in scanning unit. The system is based on the incident slit spectroscopic splitting and adopts a built-in scanning design. The push-broom imaging method can be selected according to the application requirements and the actual use of the observation platform. Or built-in scanning imaging mode, the moving parts are sealed inside the system, with good impact resistance, suitable for use on underwater observation platforms. Compared with other common hyperspectral imaging technologies, it has significant advantages.
Description
technical field [0001] The invention relates to a self-scanning hyperspectral imaging system adapted to various underwater observation platforms and a use method thereof, belonging to the technical field of underwater hyperspectral optical imaging detection. Background technique [0002] Spectral imaging technology combines spatial imaging technology and spectral technology: obtain the reflection or absorption spectrum corresponding to the spatial distribution of distant scene targets in the working band, and measure the light wave energy of different wavelengths or frequencies related to material components. It can realize simultaneous acquisition of two-dimensional spatial image information and one-dimensional spectral information of each resolution pixel to form a three-dimensional data cube. Compared with the previous remote sensing technology, hyperspectral remote sensing technology has many unique advantages, such as: wide range of working spectrum, high resolution of ...
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IPC IPC(8): G01J3/44
CPCG01J3/44
Inventor 薛庆生杨柏王福鹏李千
Owner OCEAN UNIV OF CHINA