PS-OCT Visibility Improvement Method and System Based on Polarization Multi-Parameter Fusion

Abstract

Provided are a polarization-sensitive optical coherence tomography (PS-OCT) visibility enhancement method and system based on polarization multi-parameter fusion. The method includes: acquiring an original PS-OCT image, and performing preprocessing on the original PS-OCT image to acquire a contour of a to-be-tested sample; filtering, by using the contour of the to-be-tested sample, a QUV three-dimensional array constructed based on a Stokes matrix to obtain a polarization-state image; calculating, according to a polarization state obtained by calculation, a local optical axis image and a local phase retardation image by using a Poincaré sphere; and performing average gradient fusion or weighted fusion on a plurality of obtained images to obtain a final fused PS-OCT image. In the method and system, only one single input polarization state is required, and no mutually coherent polarization inputs are required, such that the requirement for the complexity of a system is relatively low.

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