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Multispectral imaging method and device based on demosaic algorithm and principal component analysis

A technology of principal component analysis and demosaicing, which is applied in the field of computational photography, can solve the problems of reconstruction effect degradation and achieve the effect of multispectral imaging

Active Publication Date: 2021-03-23
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Claims
  • Application Information

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Problems solved by technology

Since MSFA is equivalent to sampling each channel, when the number of channels is small, a multispectral image with better effect can be obtained. Once the number of channels increases, the reconstruction effect will drop significantly.

Method used

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  • Multispectral imaging method and device based on demosaic algorithm and principal component analysis
  • Multispectral imaging method and device based on demosaic algorithm and principal component analysis
  • Multispectral imaging method and device based on demosaic algorithm and principal component analysis

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Embodiment Construction

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0034] The following describes the multispectral imaging method and device based on the demosaic algorithm and principal component analysis according to the embodiments of the present invention with reference to the accompanying drawings. Multispectral Imaging Methods.

[0035] figure 1 It is a flow chart of a multispectral imaging method based on demosaicing algorithm and principal component analysis according to an embodiment of the present invention.

[0036] Such as figure 1 As shown, the multispectral imaging method based...

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Abstract

The invention discloses a multispectral imaging method and device based on a demosaicing algorithm and principal component analysis. The method comprises: integrating a preset number of channels of wide-spectrum multi-spectral filter arrays in front of a detector, and obtaining collected data, wherein the collected data are mosaic images corresponding to the wide-spectrum multi-spectral filter arrays MSFA; processing the acquired data by using a demosaicing algorithm, and performing reconstructing to obtain a complete airspace full-resolution image corresponding to a preset number of channels;and performing parallel reconstruction decoupling on the spectrum of each spatial point through a principal component analysis theory by using the spectrum modulation characteristics of the MSFA andthe spectrum modulation data of each spatial point to obtain a multispectral image. According to the method, multispectral imaging can be realized by utilizing a good reconstruction result of a demosaicing algorithm when the number of channels is small and a principal component analysis dimension reduction effect.

Description

technical field [0001] The invention relates to the technical field of computational photography, in particular to a multispectral imaging method and device based on a demosaic algorithm and principal component analysis. Background technique [0002] Multispectral imaging technology emerged in the 1980s. It combines spectral technology and imaging technology to obtain information of multiple bands for each pixel of the image. Compared with ordinary color cameras, such as the three spectral channels of RGB cameras, multispectral imaging systems generally contain dozens or even hundreds of spectral channels. The scene is observed to obtain images. Each spectral band can be regarded as a static grayscale image, which represents the intensity information of different bands. The images on different spectral bands contain more spatial information and spectral information of the observed object. Compared with traditional imaging technology, multispectral imaging technology has gre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T3/40
CPCG06T3/4015
Inventor 边丽蘅傅毫张军
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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