A Design Method of Binocular Octaspect Multispectral Camera

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

Inactive Publication Date: 2020-09-25
XIAN UNIV OF TECH
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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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  • A Design Method of Binocular Octaspect Multispectral Camera
  • A Design Method of Binocular Octaspect Multispectral Camera
  • A Design Method of Binocular Octaspect Multispectral Camera

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Embodiment Construction

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

[0021] Reference figure 1 , The method of the present invention is specifically implemented according to the following steps:

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

[0023] The transmission curves of filters currently applied to cameras are mostly designed according to the principle of Gaussian distribution in order to reflect better performance. Therefore, this step is also designed with this principle, assuming that the spectrum collection range is λ 1 2 , 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 spectrum range of the eight spectrum bands of the spectrum camera is more flexible. The embodiment of this step is oriented to imaging in the visible light band from 400nm to 700nm, each band has a bandwidth σ=15, and the c...

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Abstract

The invention discloses a binocular eight-band multispectral camera design method. The steps include: Step 1. Determine the transmission curve of the eight-band filter; Step 2. Determine the MSFA array distribution of the eight-band spectral imaging, which constitutes Two sets of four-band MSFA arrays of imaging modules; Step 3. Realize eight-band spectral Raw image recovery. The spectral data obtained through step 2 is called spectral raw data. Each pixel position stores 1 spectral band data, and the other 3 Each spectral band data is restored using the demosaic algorithm; Step 4. Register the multispectral images restored on the two cameras of the spectral camera. The method of the invention is simple and easy to implement and has high accuracy.

Description

Technical field [0001] The invention belongs to the technical field of fast spectral imaging and relates to a design method of a dual-purpose octa-band multi-spectral camera. Background technique [0002] In reality, light has a certain energy in a certain wavelength range, and it is formed by mixing the spectrum of each band. In a typical color imaging, the spectrum is separated into three bands of R, G, and B for measurement to form an RGB image. Since the RGB image has only three spectral bands, using RGB images to reconstruct high-dimensional spectral values ​​will produce large errors. Therefore, in order to obtain and reconstruct the spectrum more accurately, imaging equipment with more spectral bands is required, especially above 6 bands. Multi-spectral imaging equipment to capture reliable spectral information of real scenes and be used in digital archiving, high-fidelity color reproduction, target detection and other fields. [0003] Single-sensor imaging technology usin...

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G01J3/28
CPCG01J3/2823G01J2003/2826H04N25/135
Inventor孙帮勇袁年曾余喆赵哲陈富伟
OwnerXIAN UNIV OF TECH