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Ghost imaging method and ghost imaging device with application of the same

A technology of ghost imaging and broadband light source, applied in the field of computational photography, can solve the problem of lack of imaging speed research, and achieve the effect of improving ghost imaging speed, improving imaging efficiency, and reducing the number of measurements

Active Publication Date: 2017-04-26
TSINGHUA UNIV
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Problems solved by technology

[0004] The ghost imaging methods in the related art mainly focus on how to improve the imaging accuracy, and none of these methods have studied the imaging speed

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  • Ghost imaging method and ghost imaging device with application of the same
  • Ghost imaging method and ghost imaging device with application of the same

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Embodiment Construction

[0024] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary, intended to explain the present invention, but not to be construed as limitations of the present invention, those skilled in the art can change the above-mentioned embodiments within the scope of the present invention , modification, substitution and variation.

[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, a...

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Abstract

The invention discloses a ghost imaging method and a ghost imaging device with the application of the method. The method comprises the steps of (S1) building a ghost imaging optical path, and using a diffuser to decompose the broadband light emitted by a broadband light source into a speckle field with narrow-band light of multiple different bands, (S2) using a calibration instrument to carry out initial calibration on the speckle field to obtain a speckle pattern, (S3) changing the speckle field through at least one mode in changing the incident angle of the broadband light source, adjusting the distance between the broadband light source and the diffuser and rotating the diffuser, and calibrating the speckle field again so as to obtain a speckle pattern set, and (S4) using the calibrated speckle set to carry out ghost imaging. According to the ghost imaging method of the embodiment of the invention, the multi-spectral multiplexing can be realized, the ghost imaging speed can be improved, the measurement times can be reduced, and the imaging efficiency can be improved.

Description

technical field [0001] The present invention relates to the technical field of computational photography, and more particularly, to a ghost imaging method and a ghost imaging device using the method. Background technique [0002] In recent years, computational ghost imaging has become a research hotspot in computational photography. Compared with traditional imaging systems, imaging accuracy and rapidity have always been important factors that limit the development of ghost imaging. [0003] The principle of ghost imaging is to use the second-order correlation of the light field to obtain the imaged scene or object, so multiple "shooting" is required. Among them, the "shooting" process is an important factor limiting the imaging speed. Therefore, how to improve the "shooting" speed is an important aspect of improving the rapidity of ghost imaging. The number of measurements of ghost imaging (that is, the number of "shots") is generally greater than the number of pixels of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/28
CPCG01J3/2823
Inventor 戴琼海邓超王玉旺索津莉
Owner TSINGHUA UNIV
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