Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
SHR Neuro Krebs Kardio Lipid Stoffw Microb
Urschler, M; Ebner, T; Štern, D.
Integrating geometric configuration and appearance information into a unified framework for anatomical landmark localization.
Med Image Anal. 2018; 43:23-36
Doi: 10.1016/j.media.2017.09.003
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- Führende Autor*innen der Med Uni Graz
- Stern Darko
- Urschler Martin
- Co-Autor*innen der Med Uni Graz
- Ebner Thomas
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- Abstract:
- In approaches for automatic localization of multiple anatomical landmarks, disambiguation of locally similar structures as obtained by locally accurate candidate generation is often performed by solely including high level knowledge about geometric landmark configuration. In our novel localization approach, we propose to combine both image appearance information and geometric landmark configuration into a unified random forest framework integrated into an optimization procedure that iteratively refines joint landmark predictions by using the coordinate descent algorithm. Depending on how strong multiple landmarks are correlated in a specific localization task, this integration has the benefit that it remains flexible in deciding whether appearance information or the geometric configuration of multiple landmarks is the stronger cue for solving a localization problem both accurately and robustly. Furthermore, no preliminary choice on how to encode a graphical model describing landmark configuration has to be made. In an extensive evaluation on five challenging datasets involving different 2D and 3D imaging modalities, we show that our proposed method is widely applicable and delivers state-of-the-art results when compared to various other related methods. Copyright © 2017 The Authors. Published by Elsevier B.V. All rights reserved.
- Find related publications in this database (using NLM MeSH Indexing)
- Humans -
- Image Interpretation, Computer-Assisted - methods
- Mathematics -
- Find related publications in this database (Keywords)
- Anatomical landmarks
- Localization
- Random regression forest
- Coordinate descent