Correlation imaging optimization method based on interpolation algorithm

A technology related to imaging and interpolation algorithm, applied in the direction of using electrical radiation detectors for photometry, etc., can solve the problems of long reconstruction time and poor reconstruction effect, and achieve the effect of reducing performance requirements, reducing time, and improving quality

Inactive Publication Date: 2019-07-23
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0004] The purpose of the invention is to provide a correlative imaging optimization method based on an interpolation algorithm, which overcomes the problems of long reconstruction time and poor reconstruction effect of existing methods

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  • Correlation imaging optimization method based on interpolation algorithm
  • Correlation imaging optimization method based on interpolation algorithm
  • Correlation imaging optimization method based on interpolation algorithm

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Embodiment Construction

[0022] The solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 As shown, the correlation imaging optimization method based on the interpolation algorithm includes the following steps:

[0024] Step 1. Light source modulation: The laser light source passes through the rotating frosted glass to generate an incoherent light source with random time intensity.

[0025] In the example of the present invention, such as figure 2 As shown, using the conveniently prepared pseudothermal light as the experimental light source, the laser passes through the rotating frosted glass to obtain pseudothermal light I i (x,y)(i=1,2...N), N is the number of iterations, the beam is divided into two parts by the beam splitter, one part is the reference light I i (x 1 ), the other part is the signal light I i (x 2 ), record the light field distribution with a CCD camera in the refere...

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Abstract

The invention discloses a correlation imaging optimization method based on an interpolation algorithm. The correlation imaging optimization method is based on a corresponding imaging idea, a bilinearinterpolation algorithm and a differential correlation imaging scheme. The scheme of the invention effectively combines the bilinear interpolation and differential correlation imaging methods, compresses image information collected by the system by using bilinear interpolation, uses the compressed pixel information to participate in differential correlation imaging, performs time-based corresponding grouping on differential signals by means of the corresponding imaging idea, reconstructs an image of a target object after performing certain iterative filtering, and finally restores the image size to the original size by using the bilinear interpolation algorithm. The interpolation algorithm greatly reduces image data information by processing the gray value, and also improves the image quality, so that the scheme of the invention has the advantages of the convenience of the interpolation algorithm and strong anti-interference ability of correlation imaging.

Description

technical field [0001] The invention relates to an optical image reconstruction method, in particular to an interpolation algorithm-based correlation imaging optimization method. Background technique [0002] Correlation imaging is a new imaging method that indirectly reconstructs images by using the second-order or even higher-order correlation properties of the light field. As a novel imaging technology, there are great differences between correlative optical imaging and traditional optical imaging. The characteristic of correlation imaging is that it can "imaging from objects": correlation imaging divides the illumination light field into two paths, one path is used to irradiate the target object and collected by an intensity detector without spatial resolution, and the other path is directly received by a scanning detector. The measurement results of the optical paths can be reconstructed to the image of the target object through correlation calculation. The informatio...

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Application Information

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IPC IPC(8): G01J1/42
CPCG01J1/42
Inventor 王清华成哲
Owner NANJING UNIV OF SCI & TECH
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