Amplitude filtering for phase-coherence imaging

Abstract

A phase-based approach can be used for one or more of acquisition, storage, or subsequent analysis of acquired acoustic imaging data. Such a phase-based approach can include coherent summation of normalized or quantized representations of A-Scan data corresponding to phase information. Such an approach can be referred to as a "phase coherence imaging" (PCI) beamforming technique. Amplitude filtering can be applied to phase-coherence imaging, such as to weight features in such imaging associated with scattering to enhance defect contrast or suppress noise, or both.

Images