Lens-free laminated diffraction image reconstruction method, system and device, and storage medium

Abstract

The invention provides a lens-free laminated diffraction image reconstruction method, system and device, and a storage medium. The method comprises the following steps: S1, acquiring a gray-phase amplitude curve of the spatial light modulator and physical parameters of a system; S2, acquiring a target pattern, and performing (K-1) times of lamination translation on the target pattern to obtain K modulation patterns; S3, inputting the K modulation patterns obtained in the step S2 into a spatial light modulator, and performing intensity acquisition on a scattered diffraction image of an object on a sensor plane to obtain a diffraction intensity image sequence (I1,... Ii,... IK); and S4, carrying out iterative reconstruction on the gray-phase amplitude curve obtained in the step S1, the physical parameters of the system and the diffraction intensity image sequence obtained in the step S3 in combination with an ePIE algorithm to obtain high-resolution amplitude and phase distribution information of the object. According to the method and the system, the high-resolution amplitude and phase distribution information of the object can be reconstructed without mechanical scanning or medium replacement, the number of required images is small, the robustness is high, and the flexibility is high too.

Description

technical field [0001] The present invention relates to lensless coherent diffrative imaging (Lensless coherent diffrative imaging, LCDI), in particular to a method for reconstructing a stacked diffractive image based on wavefront modulation, in particular to a reconstruction method, system and computer equipment for a lensless stacked diffractive image and computer readable storage media. Background technique [0002] Lens-free Microscopy (Lens-free Microscopy) is a technology that directly places the sample in close proximity to a photoelectric sensor such as a charge-coupled device (CCD) or a complementary metal-semiconductor oxide chip (CMOS), and can directly image the sample without optical components. . In a classic lensless microscope system, the main components are light source, sample, and photoelectric sensor. Therefore, the resolution of the photoelectric sensor will directly limit the resolution of imaging. Since no lens is added to the lensless microscope sys...

AI Technical Summary

Problems solved by technology

However, this method often requires a variety of different scattering media, and for unknown scattering media, it often takes thousands of pictures to reconstruct the object well.

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