High-resolution hyperspectral calculation imaging method and system and medium
A computational imaging and high-resolution technology, applied in the field of high-resolution hyperspectral imaging, can solve problems such as limiting the performance of convolutional neural networks, and achieve the effect of strong generalization ability, low memory consumption, and improved learning performance
Active Publication Date: 2021-05-14
HUNAN UNIV
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However, such methods often ignore the imaging model in spectral super-resolution, which limits the performance of convolutional neural networks.
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[0040] Such as figure 1 As described, the high-resolution hyperspectral computational imaging method of this embodiment includes:
[0041]1) Perform spectral upsampling on the input RGB image Y to obtain the initial hyperspectral image X 0 ;
[0042] 2) The initial hyperspectral image X 0 Input to the deep convolutional neural network guided by the pre-trained imaging model, and obtain the hyperspectral image X through iterative solution.
[0043] In this embodiment, the generalized inverse upsampling of the spectral response function is used for the input RGB image Y to obtain the initial hyperspectral image X 0 , perform spectral upsampling on the input RGB image Y to obtain the initial hyperspectral image X 0 The function expression of is:
[0044] (1)
[0045] In the above formula, is the generalized inverse of the spectral response function R.
[0046] Such as figure 1 As shown, the deep convolutional neural network guided by the imaging model in step 2) is ...
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The invention discloses a high-resolution hyperspectral calculation imaging method and system and a medium. The method comprises the following steps: performing spectral up-sampling on an input RGB image Y to obtain an initial hyperspectral image X0; inputting the initial hyperspectral image X0 into a pre-trained deep convolutional neural network guided by an imaging model, obtaining a hyperspectral image X through iterative solution, wherein the deep convolutional neural network is formed by cascading a plurality of modules with the same structure, each module is formed by a hyperspectral priori learning module HPL and an imaging model guiding module IMG, the hyperspectral priori learning module HPL is used for learning priori features of an up-sampling result of a previous module or an initial hyperspectral image X0. According to the method and system, the reconstruction from the RGB image to the high-resolution hyperspectral image can be effectively realized, and the method and system have the advantages of high reconstruction precision, high calculation efficiency, small memory consumption and strong generalization ability.
Description
technical field [0001] The invention relates to high-resolution hyperspectral imaging technology, in particular to a high-resolution hyperspectral computational imaging method, system and medium. Background technique [0002] Hyperspectral imaging technology can obtain image information of dozens or hundreds of spectral bands at the same time, and rich spectral information is helpful for accurate identification of substances in the scene. Therefore, hyperspectral imaging technology is widely used in earth observation, military monitoring, Environmental monitoring, geological exploration, medical detection and face recognition and other fields. However, due to the limitations of optical imaging systems, it is difficult for existing optical imaging systems to directly acquire high-resolution hyperspectral images. At the same time, spectral imaging equipment is expensive, which greatly limits the application of hyperspectral images. On the other hand, existing imaging systems...
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Login to View More IPC IPC(8): G06T3/40G06N3/04
CPCG06T3/4076G06T2207/20081G06N3/045G06T3/4046G06T3/4053
Inventor 李树涛佃仁伟郭安静康旭东孙斌方乐缘卢婷
Owner HUNAN UNIV