Integrated full Stokes polarization imaging method

Abstract

The invention discloses an integrated full-Stokes polarization imaging method, and the method comprises the specific steps: (1) designing a pixelated polarization sensitive photonic device, each pixel comprising two or more anisotropic nanometer units, and enabling the normalized amplitude difference of two orthogonal polarized lights to be 0.02 or more after the two orthogonal polarized lights pass through a single pixel; (2) monochromatic light with different wavelengths is incident to the pixelated polarization sensitive photonic device, the polarization state of incident light is changed at the same time, the spectrum of each pixel of the photonic device in different polarization states is obtained through representation, and priori knowledge is obtained; (3) establishing an imaging system, and performing optical acquisition on an imaging scene; and (4) constructing and training a reconstruction algorithm, and reconstructing a full Stokes parameter. The polarization-sensitive pixelated optical device constructed by the invention can complete full-polarization optical modulation, and can realize full-Stokes polarization imaging through one-time acquisition in combination with a compressed sensing theory and deep learning.

Description

technical field [0001] The invention relates to the fields of nanophotonics, computational photography and deep learning, in particular to an integrated full-Stokes polarization imaging method. Background technique [0002] When the imaging target is close to the background radiation intensity, the target is easily submerged in the background signal, so that the imaging detector cannot form an effective light intensity contrast. Or when the imaging target is underwater, it is difficult to detect the underwater target due to the influence of polarized light reflected by the water surface. In order to detect and identify targets in these complex environments, optical polarization imaging technology has emerged. However, the traditional polarization imaging technology still has many shortcomings and deficiencies, such as single working wavelength, loss of resolution, huge system, and inability to realize full Stokes polarization imaging. Therefore, breaking through the bottle...

AI Technical Summary

Problems solved by technology

However, there are still many shortcomings and deficiencies in the traditional polarization imaging technology, such as single working wavelength, loss of resolution, huge system, inability to realize full Stokes polarization imaging, etc.

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