| Title | Automated 2-D cephalometric analysis on X-ray images by a model-based approach |
| Authors | Yue, Weining Yin, Dali Li, Chengjun Wang, Guoping Xu, Tianmin |
| Affiliation | Peking Univ, Sch Elect Engn & Comp Sci, Beijing 100871, Peoples R China. Peking Univ, Sch Stomatol, Dept Orthodont, Beijing 100871, Peoples R China. |
| Keywords | ASM cephalometry edge detection landmarks pattern matching PCA structure tracing superimposition ACTIVE SHAPE MODELS CRANIOFACIAL LANDMARKS CEPHALOGRAMS IDENTIFICATION SYSTEM |
| Issue Date | 2006 |
| Publisher | ieee transactions on biomedical engineering |
| Citation | IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING.2006,53,(8),1615-1623. |
| Abstract | Craniofacial landmark localization and anatomical structure tracing on cephalograms are two important ways to obtain the cephalometric analysis. In order to-computerize them in parallel, a model-based approach is proposed to locate 262 craniofacial feature points, including 90 landmarks and 172 auxiliary points. In model training, 12 landmarks are selected as reference points and used to divide every training shape to 10 regions according to the anatomical knowledge; principle components analysis is employed to characterize the region shape variations and the statistical grey profile of every feature point. Locating feature points on an input image is a two-stage procedure. First, we. identify the reference landmarks by image processing and pattern matching techniques, so that the shape partition is performed on the input image. Then, for each region, its feature points are located by a modified active shape model. All craniofacial anatomical structures can be traced out by connecting the located points with subdivision curves according to the prior knowledge. Users are permitted to modify the results interactively in many different ways. Experimental results show the advantage and reliability of the proposed method. |
| URI | http://hdl.handle.net/20.500.11897/151881 |
| ISSN | 0018-9294 |
| DOI | 10.1109/TBME.2006.876638 |
| Indexed | SCI(E) EI PubMed |
| Appears in Collections: | 信息科学技术学院 口腔医院 |
