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

An imaging method and imaging system technology, applied in the fields of Fourier optics and computational photography, can solve the problems of reducing light intensity, sample damage, light intensity, etc., and achieve the effects of improving imaging speed, improving reliability, and high sensitivity

Active Publication Date: 2019-07-02
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 mosaic
  • Single-pixel imaging method and system based on image frequency domain mosaic
  • Single-pixel imaging method and system based on image frequency domain mosaic

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Embodiment Construction

[0026] 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.

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

[0028] figure 1 It is a flow chart of a single-pixel imaging method based on image frequency domain stitchin...

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Abstract

The invention discloses a single-pixel imaging method and system based on image frequency domain stitching, wherein the method includes: obtaining a transfer function according to a parallel incident light source; determining the correspondence between the parallel incident light angle and the offset in the frequency domain according to the transfer function information; the scene is illuminated by parallel lights in different directions to receive the light intensity in the center of the frequency domain through a single-pixel sensor, and then the mode of the frequency domain is obtained according to the corresponding information between the offsets; according to the mode of the frequency domain, the phase recovery algorithm is used to recover Frequency-domain phase: According to the recovered frequency-domain phase, an inverse Fourier transform is used to obtain a scene image. This imaging method can take advantage of the high sensitivity of the single-pixel sensor to light, so that imaging can be achieved only with low light intensity and short exposure time, which improves the imaging speed and reliability of imaging, and reduces the Imaging costs.

Description

technical field [0001] The invention relates to the technical fields of Fourier optics and computational photography, in particular to a single-pixel imaging method and system based on image frequency domain stitching. Background technique [0002] In the related technology, by taking scene images under parallel light incidence at different angles, image stitching is performed in the frequency domain to obtain a high-resolution frequency-domain image, and then a method of obtaining a high-resolution large-field-of-view spatial domain image through inverse Fourier transform. 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. Contents of the invention [0003] The present invention aims to solve one of the technical problems in the related art...

Claims

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Application Information

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Patent Type & Authority Patents(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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