Wirtz, Andreas ; Lam, Julian ; Wesarg, Stefan (2020)
Automated Cephalometric LandmarkLocalization using a
Coupled Shape Model.
In: Current Directions in Biomedical Engineering, 6 (3)
doi: 10.1515/cdbme-2020-3015
Article, Bibliographie
Abstract
Cephalometric analysis is an important method in orthodontics for the diagnosis and treatment of patients. It is performed manually in clinical practice, therefore automation of this time consuming task would be of great assistance. In order to provide dentists with such tools, a robust and accurate identification of the necessary landmarks is required. However, poor image quality of lateral cephalograms like low contrast or noise make this task difficult. In this paper, an approach for automatic landmark localization is presented and used to find 19 landmarks in lateral cephalometric images. An initial predicting of the individual landmark locations is done by using a 2-D coupled shape model to utilize the spatial relation between landmarks and other anatomical structures. These predictions are refined with a Hough Forest to determine the final landmark location. The approach achieves competitive performance with a successful detection rate of 70.24% on 250 images for the clinically relevant 2mm accuracy range.
| Item Type: | Article |
|---|---|
| Erschienen: | 2020 |
| Creators: | Wirtz, Andreas ; Lam, Julian ; Wesarg, Stefan |
| Type of entry: | Bibliographie |
| Title: | Automated Cephalometric LandmarkLocalization using a Coupled Shape Model |
| Language: | English |
| Date: | 26 November 2020 |
| Publisher: | De Gruyter |
| Journal or Publication Title: | Current Directions in Biomedical Engineering |
| Volume of the journal: | 6 |
| Issue Number: | 3 |
| DOI: | 10.1515/cdbme-2020-3015 |
| Abstract: | Cephalometric analysis is an important method in orthodontics for the diagnosis and treatment of patients. It is performed manually in clinical practice, therefore automation of this time consuming task would be of great assistance. In order to provide dentists with such tools, a robust and accurate identification of the necessary landmarks is required. However, poor image quality of lateral cephalograms like low contrast or noise make this task difficult. In this paper, an approach for automatic landmark localization is presented and used to find 19 landmarks in lateral cephalometric images. An initial predicting of the individual landmark locations is done by using a 2-D coupled shape model to utilize the spatial relation between landmarks and other anatomical structures. These predictions are refined with a Hough Forest to determine the final landmark location. The approach achieves competitive performance with a successful detection rate of 70.24% on 250 images for the clinically relevant 2mm accuracy range. |
| Uncontrolled Keywords: | Dental imaging, Object detection, Random forests, Medical image processing |
| Divisions: | 20 Department of Computer Science 20 Department of Computer Science > Interactive Graphics Systems |
| Date Deposited: | 02 Dec 2020 12:21 |
| Last Modified: | 02 Dec 2020 12:21 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Send an inquiry |
Options (only for editors)
 |
Show editorial Details |
Drucken
Impressum