Single-pixel imaging method and system based on image frequency domain splicing

An imaging method and single-pixel technology, which is applied in the fields of Fourier optics and computational photography, can solve the problems of strong light intensity, light intensity reduction, sample damage, etc., and achieve the effects of high sensitivity, improved imaging speed, and improved reliability

Active Publication Date: 2017-05-31
TSINGHUA UNIV
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Problems solved by technology

However, this method uses a CCD (Charge-coupled Device, charge-coupled device) sensor for imaging, resulting in the need for strong light, which may cause damage to the sample. Therefore, it is hoped that the light intensity can be reduced to achieve imaging in dark light environments

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  • Single-pixel imaging method and system based on image frequency domain splicing
  • Single-pixel imaging method and system based on image frequency domain splicing
  • Single-pixel imaging method and system based on image frequency domain splicing

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[0026] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0027] The following describes the single-pixel imaging method and system based on image frequency domain splicing proposed according to the embodiments of the present invention with reference to the accompanying drawings. First, the single-pixel imaging method based on image frequency domain splicing proposed according to the embodiments of the present invention will be described with reference to the accompanying drawings.

[0028] figure 1 It is a flowchart of a single-pixel imaging method based on im...

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Abstract

The invention discloses a single-pixel imaging method and system based on image frequency domain splicing. The single-pixel imaging method comprises the steps of acquiring a transfer function according to a parallel incident light source; determining corresponding information between offsets of the parallel incident light angle and the frequency domain according to the transfer function; illuminating a scene through different directions of parallel light, receiving the illumination intensity at the very center of the frequency domain through a single-pixel sensor, and thus the mode of the frequency domain according to the corresponding information between the offsets; retrieving the phase of the frequency domain by adopting a phase retrieval algorithm according to the mode of the frequency domain; and acquiring a scene image by adopting Fourier inverse transform according to the retrieved phase of the frequency domain. According to the imaging method, the characteristic of high sensitivity of the single-pixel sensor for light can be utilized, so that image can be realized by only requiring low illumination intensity and short exposure time, and the imaging speed is improved. In addition, the reliability of imaging is improved, and the imaging cost is reduced.

Description

Technical field [0001] The present invention relates to the technical fields of Fourier optics and computational imaging, in particular to a single-pixel imaging method and system based on image frequency domain splicing. Background technique [0002] In the related art, by shooting scene images under different angles of parallel light incidence, image stitching is performed in the frequency domain to obtain high-resolution frequency-domain images, and then high-resolution large-field-of-view spatial images are obtained through inverse Fourier transform. However, this method uses a CCD (Charge-coupled Device, charge-coupled device) sensor for imaging, which results in strong light required, which may cause damage to the sample. Therefore, it is hoped that the light intensity can be reduced to achieve imaging in a dark light environment. Summary of the invention [0003] The present invention aims to solve one of the technical problems in the related art at least to a certain exten...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232H04N5/235
CPCH04N23/80H04N23/73
Inventor 戴琼海韩晓霏王玉旺索津莉
Owner TSINGHUA UNIV
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