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Nonlocal phase object edge enhancement method and system thereof

A phase object and edge enhancement technology, which is applied in the measurement of phase influence characteristics, instruments, measuring devices, etc., can solve the problems of difficulty and high cost of light source acquisition, and achieve the effect of promoting practical application development, reducing acquisition difficulty and cost, and easy acquisition.

Pending Publication Date: 2019-11-12
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the phase object edge enhancement effect of the entangled light source is very difficult and expensive to obtain.

Method used

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  • Nonlocal phase object edge enhancement method and system thereof
  • Nonlocal phase object edge enhancement method and system thereof
  • Nonlocal phase object edge enhancement method and system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as figure 1 As shown, a non-localized phase object edge enhancement system provided in this embodiment includes: a laser He-Ne, a ground glass RG, a beam splitter BS, a first spatial light modulator SLM1, and a second spatial light modulator SLM2 , the first image detector D1, the second image detector D2 and the computer-associated measurement acquisition program C.C.

[0050] The laser He-Ne emits a laser beam and irradiates the ground glass RG, and the ground glass RG rotates to convert the laser beam into an incoherent beam; Divided into a first light beam and a second light beam; the light path of the first light beam is the first light path; the light path of the second light beam is the second light path.

[0051] A first spatial light modulator SLM1 and a first image detector D1 are sequentially arranged on the first optical path; a second spatial light modulator SLM2 and a second image detector D2 are sequentially arranged on the second optical path.

[...

Embodiment 2

[0068] refer to figure 1 And embodiment 1, this embodiment discloses a method for edge enhancement of a non-localized phase object, which specifically includes the following steps:

[0069] Step 1, the laser beam generated by the laser irradiates the ground glass, and the ground glass rotates to convert the laser beam into an incoherent beam with intensity fluctuation distribution in space;

[0070] Step 2, after the incoherent beam passes through the beam splitter, it is equally divided into the first beam and the second beam according to the light intensity;

[0071] Step 3, using two spatial light modulators to load phase filter information and phase object information into the first light beam and the second light beam respectively;

[0072] Step 4, the computer collects the image information of the first light beam and the second light beam synchronously through two image detectors, and performs correlation measurement and calculation to obtain a phase object edge-enhanc...

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Abstract

The invention provides a nonlocal phase object edge enhancement method and a system thereof, and the enhancement system comprises a laser, a frosted glass, a beam splitter, a first spatial light modulator, a second spatial light modulator, a first image detector, a second image detector and a computer, wherein the first spatial light modulator and the first image detector are sequentially disposedon a first optical path; the second spatial light modulator and the second image detector are sequentially disposed on a second optical path; the first spatial light modulator is configured to load phase filter information into a first beam; and the second spatial light modulator is configured to load phase object information to be measured into a second beam. The invention utilizes a laser coherent beam to illuminate the rotating frosted glass to obtain an incoherent heat source with spatial intensity fluctuation distribution. In practical applications, the incoherent light source is more universal and easier to acquire, thereby reducing the difficulty and cost of obtaining the light source, and more promoting the practical application development of the program.

Description

technical field [0001] The invention relates to the technical field of imaging for non-localized acquisition of object information to be measured, in particular to a non-localized phase object edge enhancement method and a system thereof. Background technique [0002] The "ghost imaging" technology based on the correlation characteristics of the light field is a non-localized imaging method to obtain the information of the object to be measured. This imaging technology can be realized by using either entangled two-photon sources or classical incoherent light sources. The corresponding physical principles are the entanglement characteristics of quantum optics and the correlation characteristics of classical thermo-optical fields. At present, the practical application of "ghost imaging" technology has been deeply developed, such as computational "ghost imaging", ghost imaging of weakly absorbing objects, x-ray ghost imaging, and single-photon imaging. [0003] However, the ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/41G01J9/00
CPCG01N21/41G01J9/00G01J2009/004G01N2021/4186
Inventor 高禄郑志远宋汉全
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)