Regularization of dielectric tensor tomography

Author:

Hugonnet Herve1ORCID,Shin Seungwoo2,Park YongKeun13ORCID

Affiliation:

1. KAIST Institute for Health Science and Technology

2. University of California at Santa Barbara

3. Tomocube Inc.

Abstract

Dielectric tensor tomography reconstructs the three-dimensional dielectric tensors of microscopic objects and provides information about the crystalline structure orientations and principal refractive indices. Because dielectric tensor tomography is based on transmission measurement, it suffers from the missing cone problem, which causes poor axial resolution, underestimation of the refractive index, and halo artifacts. In this study, we study the application of total variation and positive semi-definiteness regularization to three-dimensional tensor distributions. In particular, we demonstrate the reduction of artifacts when applied to dielectric tensor tomography.

Funder

Information & Communications Technology Planning & Evaluation (IITP), Korean government

Ministry of Science and ICT, South Korea

KAIST Institute of Technology Value Creation

National Research Foundation of Korea

Tomocube Inc.

BK21+

KAIST UP

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

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