Meaning of Interior Tomography

TL;DR

This paper discusses interior tomography, a local imaging approach that offers exact relationships and algorithms for reconstructing specific regions, and introduces a new framework called omni-tomography for multi-modal imaging fusion.

Contribution

It extends interior tomography from X-ray CT to a general imaging principle and proposes omni-tomography for multi-modal imaging integration.

Findings

Exact local reconstruction relationships established

Development of promising algorithms for interior tomography

Introduction of omni-tomography framework for multi-modal fusion

Abstract

The classic imaging geometry for computed tomography is for collection of un-truncated projections and reconstruction of a global image, with the Fourier transform as the theoretical foundation that is intrinsically non-local. Recently, interior tomography research has led to theoretically exact relationships between localities in the projection and image spaces and practically promising reconstruction algorithms. Initially, interior tomography was developed for x-ray computed tomography. Then, it has been elevated as a general imaging principle. Finally, a novel framework known as omni-tomography is being developed for grand fusion of multiple imaging modalities, allowing tomographic synchrony of diversified features.