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A real-time reconstruction method of dual-camera spectral imaging system based on interpolation

A spectral imaging and dual-camera technology, applied in the field of computational photography, can solve the problems of inability to obtain hyperspectral images in real time and long reconstruction time

Active Publication Date: 2019-01-04
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0006] Aiming at the problems of long reconstruction time and inability to obtain hyperspectral images in real time in existing reconstruction methods

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  • A real-time reconstruction method of dual-camera spectral imaging system based on interpolation
  • A real-time reconstruction method of dual-camera spectral imaging system based on interpolation
  • A real-time reconstruction method of dual-camera spectral imaging system based on interpolation

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Embodiment 1

[0086]The real-time reconstruction method of a dual-camera spectral imaging system based on interpolation disclosed in this embodiment is applied to a dual-camera spectral imaging system based on a panchromatic camera (Panchromatic camera based dual camera compressive hyperspectral imaging, PDCCHI) (see Wang L, Xiong Z, Gao D, etal.Dual-camera design for coded aperture snapshot spectral imaging[J].AppliedOptics,2015,54(4):848-58.). The PDCCHI system consists of a coded aperture snapshot spectral imaging system (Coded Aperture Snapshot Spectral Imager, CASSI) (see Wagadarikar A, John R, Willett R, Brady D.Single disperser design for coded aperture snapshot spectral imaging[J].Applied optics.2008 ,47(10):B44-B51.) and a panchromatic branch. The CASSI system uses a coded aperture and a dispersive medium to perform spatial and spectral modulation on a three-dimensional hyperspectral image, respectively, and obtains a two-dimensional aliasing projection through a detector. While P...

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Abstract

The invention discloses a real-time reconstruction method of a dual-camera spectral imaging system based on interpolation, which relates to a method capable of obtaining high-resolution and high-spectral images in real-time, and belongs to the field of computational imaging. The method for realizing the invention comprises the follow steps: the method is applied to the spectrum imaging system of two cameras based on panchromatic camera, Hyperspectral reconstruction is divided into three phases of low-resolution hyperspectral reconstruction, upsampling interpolation and high resolution hyperspectral reconstruction, a fast interpolation model, a fast response model and a fast difference model are established according to the principle of the system and the characteristics of GPUto complete the three phases, which can guarantee the high spatial resolution and high spectral fidelity of the reconstruction results, and greatly improve the efficiency of hyperspectral image reconstruction, achieve the purpose of real-time reconstruction of hyperspectral images, and greatly expand the application range of hyperspectral images. The invention can be used in the fields of geological exploration, biological research, artificial intelligence and the like.

Description

technical field [0001] The invention relates to a hyperspectral image reconstruction method for a dual-camera spectral imaging system, in particular to a method capable of acquiring high-resolution hyperspectral images in real time, and belongs to the field of computational photography. Background technique [0002] Thanks to the maturity of imaging technology and spectral technology, hyperspectral imaging technology can obtain the continuous spectral curve of the target scene. The image obtained by this technology contains two-dimensional spatial information and one-dimensional spectral information of the target scene, which is called a data cube. Compared with traditional color imaging, hyperspectral imaging technology can obtain useful information with richer content and more prominent details. Since different substances reflect different spectral curves, hyperspectral images can well complete tasks such as classification and identification. At present, this technology ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/40G06T7/55
CPCG06T3/4007G06T3/4061G06T7/55
Inventor 王立志张仕鹏黄华
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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