This thesis aims to conduct a comparative validation of different filtering algorithms for the automatic segmentation of the hepatic vascular system. This aims to define a robust evaluation protocol capable of measuring the effectiveness of multi-scale filters in preserving not only the overall volume, but also the geometric coherence and topological connectivity of the structures. The experimental methodology was based on the public dataset 3D-IRCADb-01, used to test the performance of five state-of-the-art filters (Frangi, Jerman, Meijering, Sato, and Zhang) in a 3D Slicer environment. The validation procedure was conducted using an approach that integrates volumetric indices, surface distance analysis, and topological metrics, thus ensuring a comprehensive assessment of geometric and structural accuracy.
Il presente lavoro di tesi si propone di condurre una validazione comparativa di diversi algoritmi di filtraggio per la segmentazione automatica del sistema vascolare epatico, al fine di definire un protocollo di valutazione robusto capace di misurare l’efficacia dei filtri multi-scala nel preservare non solo il volume globale, ma anche la coerenza geometrica e la connettività topologica delle strutture. La metodologia sperimentale si è basata sull’utilizzo del dataset pubblico 3D-IRCADb-01, impiegato per testare le performance di cinque filtri allo stato dell’arte (Frangi, Jerman, Meijering, Sato e Zhang) in ambiente 3D Slicer. La procedura di validazione è stata condotta attraverso un approccio che integra indici volumetrici, analisi delle distanze superficiali e metriche topologiche, garantendo così una valutazione completa dell'accuratezza geometrica e strutturale.
Validazione di metodi di filtraggio per la segmentazione automatica del sistema vascolare epatico
FRANZOI, ENRICO
2025/2026
Abstract
This thesis aims to conduct a comparative validation of different filtering algorithms for the automatic segmentation of the hepatic vascular system. This aims to define a robust evaluation protocol capable of measuring the effectiveness of multi-scale filters in preserving not only the overall volume, but also the geometric coherence and topological connectivity of the structures. The experimental methodology was based on the public dataset 3D-IRCADb-01, used to test the performance of five state-of-the-art filters (Frangi, Jerman, Meijering, Sato, and Zhang) in a 3D Slicer environment. The validation procedure was conducted using an approach that integrates volumetric indices, surface distance analysis, and topological metrics, thus ensuring a comprehensive assessment of geometric and structural accuracy.| File | Dimensione | Formato | |
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Franzoi_Enrico.pdf
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https://hdl.handle.net/20.500.12608/108013