US 12,270,722 B2
Reversible polar decomposition method for backscattering Mueller matrix
Min Xu, Wenzhou (CN); Zhineng Xie, Wenzhou (CN); and Weihao Lin, Wenzhou (CN)
Assigned to WENZHOU MEDICAL UNIVERSITY, Zhejiang (CN)
Appl. No. 18/555,999
Filed by WENZHOU MEDICAL UNIVERSITY, Wenzhou (CN)
PCT Filed Oct. 11, 2022, PCT No. PCT/CN2022/124561
§ 371(c)(1), (2) Date Oct. 18, 2023,
PCT Pub. No. WO2023/236406, PCT Pub. Date Dec. 14, 2023.
Claims priority of application No. 202210650209.7 (CN), filed on Jun. 9, 2022.
Prior Publication US 2024/0264036 A1, Aug. 8, 2024
Int. Cl. G01M 11/02 (2006.01)
CPC G01M 11/0207 (2013.01) 8 Claims
OG exemplary drawing
 
1. An imaging method based on a reciprocal polar decomposition for backscattering Mueller matrices, comprising the following steps:
step 1, guiding an incident beam generated from a light source through an optical component to a target biological tissue to be imaged, and receiving a reflected beam of the incident beam scattered from the target biological tissue to be imaged at a polarization camera to obtain a backscattering Mueller matrix of the optical component;
step 2, according to a relation between a diattenuator matrix and a retarder matrix of each of forward and backward light paths, transforming a Mueller matrix M backscattering into a symmetric matrix QM;
step 3, obtaining a diattenuator matrix MD1 by a matrix QMG;
step 4, obtaining eigenvalues and eigenvectors through orthogonal decomposition;
step 5, sorting the eigenvectors to obtain a depolarization matrix MΔd and a retarder matrix MR1;
step 6, obtaining polarization parameters by the obtained depolarization matrix MΔd and retarder matrix MR1;
step 7, obtaining two-dimensional polarization images of the target biological tissue based on the obtained polarization parameters.