Fourier single-pixel imaging method based on spectrum saliency

A technology of Fourier single- and imaging methods, which is applied in measuring devices, instruments, and material analysis through optical means, can solve the problems of reducing imaging efficiency and low imaging efficiency, and achieve the effect of improving imaging efficiency

Active Publication Date: 2021-06-08
NANJING INST OF TECH
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Problems solved by technology

[0002] The traditional single-pixel imaging method uses Hadamard matrix or random matrix as the measurement matrix, and its disadvantage is that the imaging efficiency is low in the case of high resolution
The single-pixel imaging method based on the Fourier basis can effectively solve this problem, but there are still a large number of redundant frequency points being sampled, which seriously reduces the imaging efficiency

Method used

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  • Fourier single-pixel imaging method based on spectrum saliency
  • Fourier single-pixel imaging method based on spectrum saliency
  • Fourier single-pixel imaging method based on spectrum saliency

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments.

[0030] A Fourier single-pixel imaging method based on spectral saliency, such as figure 1 As shown, the imaging system includes a projector 3 for projecting a substrate image to an imaging target 1, and a barrel detector 4 for collecting reflected images of the imaging target; a computer 2 generates multiple groups of substrate images and projects them on the target, and the barrel detector detects to the total light intensity reflected by the imaging target, and the data collected are transmitted to the computer by the acquisition card 5, and the target image is reconstructed by the computer, such as figure 2 As shown, the specific steps are as follows:

[0031] Step 1, the computer generates a sinusoidal fringe base image, and projects it onto the imaging target through a projector;

[0032] Step 2, the computer receives the refl...

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Abstract

The invention relates to a Fourier single-pixel imaging method based on spectrum saliency, which comprises the following steps of generating a series of Fourier base images by a computer, projecting the Fourier base images to a target, detecting the total light intensity reflected by the target through a barrel detector, transmitting the total light intensity to the computer, and reconstructing a target image by the computer. According to the Fourier single-pixel imaging method, sparse measurement and image reconstruction of Fourier coefficients are carried out based on spectrum saliency, sampling is only carried out in a region possibly containing target spectrum saliency information according to the structural similarity of the spectrum, and the imaging efficiency is effectively improved.

Description

technical field [0001] The invention relates to the technical field of single-pixel imaging, in particular to a Fourier single-pixel imaging method based on spectral significance. Background technique [0002] The traditional single-pixel imaging method uses Hadamard matrix or random matrix as the measurement matrix, and its disadvantage is that the imaging efficiency is low in the case of high resolution. The single-pixel imaging method based on Fourier basis can effectively solve this problem, but there are still a large number of redundant frequency points being sampled, which seriously reduces the imaging efficiency. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a Fourier single-pixel imaging method based on spectral saliency, which utilizes the similar structure of the spectrum to only sample areas that may contain significant information of the target spectrum, effectively improving the imaging efficiency...

Claims

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Application Information

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IPC IPC(8): G01B11/24G01N21/84
CPCG01B11/24G01N21/84
Inventor 何睿清张健赵静魏峘余辉龙覃翠涂平华
Owner NANJING INST OF TECH
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