A 3D spectral imaging system and method based on scattering medium

Abstract

The invention relates to a 3D spectral imaging system and method based on a scattering medium. The system includes a light source module, a collimation correction module, an object to be measured, a scattering medium, and a detector arranged sequentially along the direction of the optical path, wherein the light source module is used for for generating a beam of arbitrary wavelength; the collimation correction module is used to perform collimation correction on the beam and filter out impurity astigmatism; the beam after collimation correction and filter out impurity astigmatism is irradiated on the object to be measured, The scattering medium is used to scatter the light passing through the object to form a speckle pattern; the detector is used to receive the speckle pattern. In the system and method of the present invention, the traditional single lens is replaced by a scattering medium, a PSF database containing spectral and spatial depth information is established, and the target is reconstructed by combining the deconvolution method, so that the spectral information and three-dimensional structure information of the target to be measured are displayed simultaneously, with the advantages of Good spectral resolution and good imaging effect.

Description

technical field [0001] The invention belongs to the technical field of computational imaging, and in particular relates to a 3D spectral imaging system and method based on a scattering medium. Background technique [0002] According to the principle, traditional spectral imaging can be divided into four types: filter type, dispersion type, interference type and computational spectral imaging. With the development of science and technology, 3D spectral imaging has received more and more attention and applications in the fields of astronomical observation, remote sensing measurement, chemical and material analysis, biomedical imaging, and non-destructive testing of light source characteristics. To achieve 3D spectral imaging on the basis of traditional spectral imaging technology, it is necessary to combine optical scanning 3D imaging technology and multi-frame 3D imaging technology. Although 3D imaging can be achieved, its temporal resolution is greatly reduced. [0003] Wit...

AI Technical Summary

Problems solved by technology

To achieve 3D spectral imaging on the basis of traditional spectral imaging technology, it is necessary to combine optical scanning 3D imaging technology and multi-frame 3D imaging technology. Although 3D imaging can be achieved, its temporal resolution is greatly reduced.

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