Compressive sensing theory-based digital holographic imaging device and imaging method

Abstract

The invention relates to a compressive sensing theory-based digital holographic imaging device which comprises an image generation module, an image acquisition module and an image processing module, wherein the image generation module is used for generating a holographic image; the image acquisition module is used for acquiring the image, and transmitting image data to the image processing module; the image processing module is used for performing 3D (three-dimensional) object reconstruction imaging on the image data; the image acquisition module comprises a digital micro-mirror device for acquiring and compressing the holographic image generated by the image generation module so as to generate a compressed holographic image, a lens for converging an interference holographic image, a single-photon detector for acquiring an optical signal of the interference holographic image and an A / D (analogue / digital) converter for converting the optical signal to a digital signal. The invention also provides a compressive sensing theory-based digital holographic imaging method.

Description

technical field [0001] The invention belongs to the field of digital holographic imaging, and in particular relates to a digital holographic imaging device and a detection method based on compressed sensing theory. Background technique [0002] The holographic imaging method has the characteristics of recording and reproducing the phase and complex amplitude information of the object, especially for the imaging of 3D objects and 3D scenes in the real world. Digital holography uses a photoelectric sensing device (such as CCD or CMOS) instead of a dry plate to record a hologram, then stores the hologram in a computer, and uses a computer to simulate the optical diffraction process to realize the holographic reproduction and processing of the recorded object. [0003] Compared with traditional optical holography, digital holography has the advantages of low production cost, fast imaging speed, flexible recording and reproduction, etc. However, in the past few years, the huge b...

AI Technical Summary

Problems solved by technology

However, due to the limitation of the device structure, the existing superconducting single photon detectors have some difficulties in area array imaging

[0005] In addition, the current compression holographic technology at home and abroad needs to record multiple holograms. This method requires multiple adjustments to the phase of the reference light, which will cause errors in the experimental results.

Images