Method for characterizing polarization image information and method for computing characterization parameters

US11967116B2 · kind B2 · utility

Assignee

• Huazhong University of Science and Technology · CN

Inventors

• Donglin Ma · Hubei, CN
• Yiming Yan · Hubei, CN

Key dates

• Filing date: Mar 25, 2021
• Grant date: Apr 23, 2024
• Expiry date: Aug 18, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F17/16
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for characterizing polarization image information and a method for computing characterization parameters are provided. The method includes: obtaining n polarized subimages of a polarization imaging target, wherein each polarized subimage corresponds to a different polarization angle and n≥3; and computing a parameter matrix [ILP (x, y) INLP(x, y) θ(x, y)] of a polarization cosine characterization equation of all pixel points of the polarization imaging target according to all polarized subimages and the polarization cosine characterization equation of the polarization imaging target. The disclosure obtains a maximum polarization intensity image and a minimum polarization intensity image through computing multiple polarization intensity images, which improves the accuracy of polarization imaging, and the degree of accuracy is much higher than macroscopic accuracy. The disclosure computes polarization cosine characterization parameters through the least squares fitting, which can also effectively reduce the influence of an experimental error on the experimental result.