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Multispectral calculation reconstruction method and system

A reconstruction system and multi-spectral technology, applied in the field of computational photography, can solve the problem of losing details and achieve the effect of simple reconstruction

Active Publication Date: 2012-09-12
TSINGHUA UNIV
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Problems solved by technology

But in fact, the scene light that can be seen has a complete spectrum, and only capturing the three channels of RGB loses a lot of details in the spectral dimension

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  • Multispectral calculation reconstruction method and system
  • Multispectral calculation reconstruction method and system
  • Multispectral calculation reconstruction method and system

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Embodiment Construction

[0045] 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 only for explaining the present invention and should not be construed as limiting the present invention.

[0046] These and other aspects of embodiments of the invention will become apparent with reference to the following description and drawings. In these descriptions and drawings, some specific implementations of the embodiments of the present invention are specifically disclosed to represent some ways of implementing the principles of the embodiments of the present invention, but it should be understood that the scope of the embodiments of the present invention is not limited by this limit. On the contrary, the embodiments of the present...

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Abstract

The invention provides a multispectral calculation reconstruction method which comprises the steps of generating a two-way multispectral image and employing a photographing device toacquire the two-way multispectral image to obtainmultispectral information of sampling points; according to the multispectral information of the sampling points generating a corresponding multispectral information matrix of the sampling points and allowing the multispectral information matrix of the sampling points to be subjected to dictionary learning with sparse constraint to generate a spectral dictionary; and reconstructing the spectral information of non-sampling points in the two-way multispectral image under sparse prior constraint. The invention also provides a multispectral calculation reconstruction system which comprises an image acquisition device, a dictionary learning device and a spectral information reconstruction device. The method and the system provided by the invention employthe inherent law of the multispectral information, scene materials and the sparsity of light source spectrum, thus the reconstruction of the multispectral informationbeing simple and intuitive, the needed scene spectrum sampling points being less, and realizing high dimension multispectral data collection based on a compression perception theory.

Description

technical field [0001] The invention relates to the field of computational photography, in particular to a multispectral computational reconstruction method and system. Background technique [0002] In recent years, computational photography has become an international frontier research hotspot in the fields of cross-vision, graphics, photography, and signal processing. How to computationally collect and reconstruct high-dimensional information of real scenes has attracted widespread attention. Carrying out related research work on scene multispectral information is of great significance for remote sensing monitoring, security investigation, digital entertainment and other fields. [0003] Traditional digital photography samples the two-dimensional projection subspace of high-dimensional scene signals (commonly represented by seven-dimensional plenoptic functions), and projects the high-dimensional scene information onto the two-dimensional sampling subspace of the camera fo...

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Application Information

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IPC IPC(8): G01J3/28
Inventor 戴琼海马晨光索津莉
Owner TSINGHUA UNIV
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