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Scattering medium imaging method and system based on semi-definite optimization and medium

An imaging method and imaging system technology, applied in the generation of 2D images, image data processing, instruments, etc., can solve the problems of little practical application value and high requirements for experimental optical paths

Inactive Publication Date: 2020-04-10
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

The transmission matrix method realizes the imaging of scattering media, and the transmission matrix is ​​measured by the four-step phase-shift interferometry, which has very high requirements on the experimental optical path, and has little practical application value.

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  • Scattering medium imaging method and system based on semi-definite optimization and medium
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  • Scattering medium imaging method and system based on semi-definite optimization and medium

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Embodiment Construction

[0065] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0066] In the presence of scattering media, the present invention estimates the scattering characteristics corresponding to the scattering media by collecting a set of output speckle patterns corresponding to the known object images, and then obtains the target by solving a semi-definite programming problem according to the semi-definite optimization theory. Reconstruct the product of the object image and its Hermitian transpose, and then extract the eigenvector corresponding to the maximum eigenvalue of...

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Abstract

The invention provides a scattering medium imaging method and system based on semi-definite optimization, and a medium, and the method comprises the steps: a scattering characteristic extraction stepof a scattering medium: estimating a scattering characteristic corresponding to the scattering medium through collecting a group of output speckle patterns corresponding to a known object image in thepresence of the scattering medium; and an image reconstruction step: after the scattering characteristic matrix corresponding to the scattering medium is estimated, according to a semi-definite optimization theory, solving a semi-definite programming problem to obtain a product of the image of the object to be reconstructed and Hermitian transposition thereof, and then extracting a characteristicvector corresponding to a maximum characteristic value of the product, thereby realizing scattering medium imaging. The method is used for improving the imaging precision and efficiency in the presence of a scattering medium, and the imaging precision is ensured while the efficiency is improved.

Description

technical field [0001] The present invention relates to the technical field of scattering medium imaging, in particular, to a scattering medium imaging method, system and medium based on semidefinite optimization, especially to the fusion of transmission matrix theory and semidefinite optimization theory in the presence of scattering medium, In this way, the efficiency and imaging quality of scattering medium imaging can be improved. Background technique [0002] Due to the scattering effect of the scattering medium, it is difficult for the traditional optical imaging system to effectively detect its internal targets. Imaging through scattering media has important scientific and application value, especially in the fields of biomedical imaging and remote sensing mapping. Many methods have been proposed in recent years to realize imaging of scattering media, such as the transfer matrix method. The transmission matrix method realizes the imaging of scattering media, and the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25G06K9/46G06T11/00
CPCG01N21/255G06T11/00G06V10/40
Inventor 高叶盛陈卉刘兴钊
Owner SHANGHAI JIAO TONG UNIV
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