ࡱ> ;=:q` RbjbjqPqP2$::    $0 *H    $+h        <  p.0z 8H | d{     Title:Automated 2-D cephalometric analysis on X-ray images by a model-based approach Author(s): HYPERLINK "http://apps.isiknowledge.com/WoS/CIW.cgi?SID=Z2d97PIg59pbAmiFDId&Func=OneClickSearch&field=AU&val=Yue+WN&curr_doc=6/1&Form=FullRecordPage&doc=6/1" \o "one-click search" Yue WN,  HYPERLINK "http://apps.isiknowledge.com/WoS/CIW.cgi?SID=Z2d97PIg59pbAmiFDId&Func=OneClickSearch&field=AU&val=Yin+DL&curr_doc=6/1&Form=FullRecordPage&doc=6/1" \o "one-click search" Yin DL,  HYPERLINK "http://apps.isiknowledge.com/WoS/CIW.cgi?SID=Z2d97PIg59pbAmiFDId&Func=OneClickSearch&field=AU&val=Li+CJ&curr_doc=6/1&Form=FullRecordPage&doc=6/1" \o "one-click search" Li CJ,  HYPERLINK "http://apps.isiknowledge.com/WoS/CIW.cgi?SID=Z2d97PIg59pbAmiFDId&Func=OneClickSearch&field=AU&val=Wang+GP&curr_doc=6/1&Form=FullRecordPage&doc=6/1" \o "one-click search" Wang GP,  HYPERLINK "http://apps.isiknowledge.com/WoS/CIW.cgi?SID=Z2d97PIg59pbAmiFDId&Func=OneClickSearch&field=AU&val=Xu+TM&curr_doc=6/1&Form=FullRecordPage&doc=6/1" \o "one-click search" Xu TM Source:IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING 53 (8): 1615-1623 AUG 2006 Document Type:Article Language:English  HYPERLINK "http://apps.isiknowledge.com/WoS/CIW.cgi?SID=Z2d97PIg59pbAmiFDId&Func=PagedCitedRefList&UT=000239263400017&doc=6/1&rec_id=151344904" Cited References: 25 Times Cited: 0  HYPERLINK "http://apps.isiknowledge.com/WoS/CIW.cgi?SID=Z2d97PIg59pbAmiFDId&Func=EasyRelated&UT=000239263400017&doc=6/1&rec_id=151344904"  INCLUDEPICTURE "http://images.isiknowledge.com/Images/relrec.gif" \* MERGEFORMATINET  HYPERLINK "javascript:void();"  INCLUDEPICTURE "http://images.isiknowledge.com/Images/info.gif" \* MERGEFORMATINET  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. Author Keywords:ASM; cephalometry; edge detection; landmarks; pattern matching; PCA; structure tracing; superimposition KeyWords Plus:ACTIVE SHAPE MODELS; CRANIOFACIAL LANDMARKS; CEPHALOGRAMS; IDENTIFICATION; SYSTEM Addresses:Yue WN (reprint author), Peking Univ, Sch Elect Engn & Comp Sci, Beijing, 100871 Peoples R China Peking Univ, Sch Elect Engn & Comp Sci, Beijing, 100871 Peoples R China Peking Univ, Sch Stomatol, Dept Orthodont, Beijing, 100871 Peoples R China E-mail Addresses: HYPERLINK "mailto:yue@graphics.pku.edu.cn" yue@graphics.pku.edu.cn Publisher:IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855 USA Subject Category:ENGINEERING, BIOMEDICAL IDS Number:066XH ISSN:0018-9294 UWabc   " # W X _ ` b c     ' p ~ - . жКККККККККККК,h h >*B*CJKHOJQJ^Jph6jh h B*CJKHOJQJU^JaJph3h h 5B*CJKHOJQJ\^JaJph-h h B*CJKHOJQJ^JaJph/h h 5B*CJKHOJQJ\^Jph-W p =h{gd $1$a$gd $1$9Da$gd . ? 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