Challenges for Optical Flow Estimates in Elastography

TL;DR

This paper introduces EOFM, an optical flow method tailored for elastography that incorporates experimental constraints and structural information, improving displacement field visualization in static compression experiments.

Contribution

The paper presents a novel elastographic optical flow method that integrates boundary conditions, speckle data, and background structural knowledge, advancing elastography imaging techniques.

Findings

EOFM improves displacement estimation accuracy.

Numerical results validate the method on simulated and experimental data.

The approach enhances elastography visualization under static compression.

Abstract

In this paper, we consider visualization of displacement fields via optical flow methods in elastographic experiments consisting of a static compression of a sample. We propose an elastographic optical flow method (EOFM) which takes into account experimental constraints, such as appropriate boundary conditions, the use of speckle information, as well as the inclusion of structural information derived from knowledge of the background material. We present numerical results based on both simulated and experimental data from an elastography experiment in order to demonstrate the relevance of our proposed approach.