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Binocular eight-spectrum-band multispectral camera design method

A design method, multi-spectral technology, applied in spectrometry/spectrophotometry/monochromator, spectral survey, optical radiometry, etc., which can solve the problems of large volume, slow imaging and high cost

Inactive Publication Date: 2019-08-06
XIAN UNIV OF TECH
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a design method for a binocular eight-band multispectral camera, which solves the problems of high cost, slow imaging and large volume of existing multispectral imaging equipment

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  • Binocular eight-spectrum-band multispectral camera design method
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  • Binocular eight-spectrum-band multispectral camera design method

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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] refer to figure 1 , the inventive method is specifically implemented according to the following steps:

[0022] Step 1, determine the transmission curve of the eight-band filter,

[0023] Most of the filter transmission curves currently applied to cameras are designed according to the principle of Gaussian distribution in order to reflect better performance, so this step is also designed using this principle, assuming that the spectral collection range is λ 1 2 , then the transmission function is defined as: Among them, μ is the expected value of the spectral distribution, and σ is the standard deviation;

[0024] The spectral value range of the eight spectral segments of the spectral camera is more flexible. The embodiment of this step is aimed at imaging in the visible light band 400nm-700nm. The bandwidth of each spectral segmen...

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Abstract

The invention discloses a binocular eight-spectrum-band multispectral camera design method, which comprises the steps of: step 1, determining a transmission curve of an eight-spectrum-band optical filter; step 2, determining MSFA array distribution of eight-spectrum-band spectral imaging, and forming four-spectrum-band MSFA arrays of two sets of imaging modules; step 3, realizing eight-spectrum-band spectral Raw image restoration, wherein spectral data obtained in the step 2 is named as spectral raw data, one spectrum-band data is stored in each pixel position, and the rest three spectrum-banddata is restored by adopting a demosaic algorithm; step 4, and registering multispectral images restored on two cameras of a spectral camera. The binocular eight-spectrum-band multispectral camera design method of the invention is simple and feasible, and is high in precision.

Description

technical field [0001] The invention belongs to the technical field of fast spectral imaging, and relates to a design method of a binocular eight-spectrum multispectral camera. Background technique [0002] Light in reality has a certain energy in a certain wavelength range, which is formed by mixing the spectrum of each band. In typical color imaging, the spectrum is separated into three spectral bands of R, G, and B for measurement, thus forming an RGB image. Since the RGB image has only three spectral bands, using the RGB image to reconstruct the high-dimensional spectral value will produce large errors. Therefore, in order to obtain and reconstruct the spectrum more accurately, imaging equipment with more spectral bands is needed, especially more than 6 spectral bands. Advanced multispectral imaging devices in order to capture reliable spectral information of real-world scenes for applications in digital archiving, high-fidelity color reproduction, object detection, etc...

Claims

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Application Information

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IPC IPC(8): G01J3/28
CPCG01J3/2823G01J2003/2826
Inventor 孙帮勇袁年曾余喆赵哲陈富伟
Owner XIAN UNIV OF TECH