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Eight-channel multispectral camera design method for fast imaging

A design method and eight-channel technology, applied in the field of eight-channel multispectral camera design, can solve the problems of high cost, slow multispectral image acquisition, complex camera structure, etc., and achieve low cost, long image acquisition time, and simple camera structure. Effect

Inactive Publication Date: 2018-05-18
XIAN UNIV OF TECH
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for designing an eight-channel multispectral camera for fast imaging, which solves the problems of slow multispectral image acquisition speed, complex camera structure and high cost in the prior art

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  • Eight-channel multispectral camera design method for fast imaging

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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] The present invention is aimed at the eight-channel multispectral camera design method of rapid imaging, implements according to the following steps:

[0022] Step 1. Set the transmission curve of the eight-channel color filter

[0023] Most of the color filter transmission curves currently used in cameras are designed to be Gaussian distribution, and show better performance. Therefore, the present invention also uses this principle to design. If the spectral collection range is λ 1 2 , then the transmission function is defined as:

[0024] Among them, μ is the expected value of the spectral distribution, and σ is the standard deviation;

[0025] The spectral value range of the eight channels of the spectral camera is relatively flexible. This step is selected for imaging in the visible light range of 400nm-700nm. The bandwidth of ...

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Abstract

The invention discloses an eight-channel multispectral camera design method for fast imaging. The method comprises steps of: 1) setting the transmission curve of an eight-channel color filter; 2) designing the array distribution of multispectral imaging, using one CCD in the camera structure, just acquiring the Raw data of one channel at each pixel of the CCD, arranging the eight-channel color filter in a 2*4 form, and repeatedly arranging the eight-channel color filter on the surface of the entire CCD; 3) performing image restoration on the eight-channel spectrum raw data; 4) post-processingthe restored multispectral image; 5) performing characterization processing of the multispectral cameras. The eight-channel multispectral camera designed in the invention is simple in structure, smallin occupied space, short in imaging time and low in cost.

Description

technical field [0001] The invention belongs to the technical field of fast spectral imaging and relates to a design method for an eight-channel multispectral camera aimed at fast imaging. Background technique [0002] Multispectral images use multiple channels to record and represent target scene information, which facilitates the analysis of target characteristics from different bands or frequencies. Therefore, it is widely used in remote sensing, medical treatment, natural disaster assessment, and artwork reproduction. Since NASA adopted multispectral sensors to collect information on the earth's surface in 1972, how to quickly and accurately collect multispectral images has been one of the important research hotspots. [0003] Most multi-spectral cameras are based on the principle of multiple imaging. Taking the wheel-type spectral camera as an example, it adopts a structure of a single lens and multiple sets of color filters. Different color filters are distributed on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/28
CPCG01J3/0294G01J3/2803G01J3/2823G01J2003/2826
Inventor 孙帮勇
Owner XIAN UNIV OF TECH
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