Novel sub-pixel resolution diffraction imaging method

Abstract

The invention relates to a novel sub-pixel resolution diffraction imaging method, which belongs to the technical field of imaging, and comprises the specific steps of light path arrangement, single illumination, data acquisition, measurement data transmission to a terminal, construction of an optimization model, reconstruction of an image by using a diffraction intensity pattern, Gaussian noise filtering and judgment of whether an algorithm can be terminated or not. The data acquisition system based on the high-resolution spatial light modulator is designed according to the principle of coherent light illumination imaging, and compared with an existing optical system, the material and the preparation process are simple, an object image obviously higher than the resolution of a camera can be reconstructed through the low-resolution camera, the cost is low, and the effect is good.

Description

technical field [0001] The invention relates to a novel sub-pixel resolution diffraction imaging method, which belongs to the technical field of imaging. Background technique [0002] Diffraction imaging refers to the reconstruction of original images using diffraction intensity patterns containing highly incomplete information. It has become a key technology for highly accurate measurement, recording and reconstruction of two-dimensional and three-dimensional objects due to its advantages of no lens, simplicity and effectiveness. The imaging resolution of traditional diffraction imaging methods is usually at the pixel level, that is, the pixel size of the reconstructed image Δ o Equal to the diffraction intensity pattern pixel size Δ s . The resolution of the diffraction intensity pattern is limited by the diffraction limit, so the imaging resolution of traditional methods is difficult to exceed the diffraction limit resolution. The pixel size of the diffraction intensit...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a new sub-pixel resolution diffraction imaging method, which is a sub-pixel resolution diffraction imaging method based on a high-resolution spatial light modulator and a Gaussian noise filter, and is mainly used to solve the problem of traditional diffraction imaging methods. The problem of complex equipment and low resolution

Images