In:
e-Journal of Nondestructive Testing, NDT.net GmbH & Co. KG, Vol. 24, No. 3 ( 2019-03)
Abstract:
This work introduces methods for analyzing the three imaging modalities delivered by Talbot-Lau grating interferometry X-ray
computed tomography (TLGI-XCT). The first problem we address is providing a quick way to show a fusion of all three modalities. For this purpose the tri-modal transfer function widget is introduced. The widget controls a mixing function that uses the
output of the transfer functions of all three modalities, allowing the user to create one customized fused image. A second problem prevalent in processing TLGI-XCT data is a lack of tools for analyzing the segmentation process of such multimodal data. We
address this by providing methods for computing three types of uncertainty: From probabilistic segmentation algorithms, from the voxel neighborhoods as well as from a collection of results. We furthermore introduce a linked views interface to explore
this data. The techniques are evaluated on a TLGI-XCT scan of a carbon-fiber reinforced dataset with impact damage. We show that the transfer function widget accelerates and facilitates the exploration of this dataset, while the uncertainty analysis methods
give insights into how to tweak and improve segmentation algorithms for more suitable results.
Type of Medium:
Online Resource
ISSN:
1435-4934
Language:
Unknown
Publisher:
NDT.net GmbH & Co. KG
Publication Date:
2019
detail.hit.zdb_id:
2021293-8
Permalink