TY - GEN
T1 - Reconstructing hierarchical tetrahedral mesh density models of bony anatomy
AU - Yao, Jianhua
AU - Taylor, Russell
PY - 2001
Y1 - 2001
N2 - We proposed an efficient and automatic method to reconstruct hierarchical tetrahedral meshes and build density models for bony anatomy from CT data sets. The mesh is reconstructed from contours extracted in CT images corresponding to the outer bone surfaces and the boundaries between compact bone, spongy bone and medullary cavity. Key problems, such as tiling problem, branching problem, correspondence problem, and constraint problem, have been solved. We then approximated bone density variations by means of continuous density functions in each tetrahedron. The density functions are written as smooth Bernstein polynomial spline expressed in terms of barycentric coordinates associated with each tetrahedron. We further performed the tetrahedral mesh simplification by edge collapsing and built hierarchical structure of multiple resolution meshes. We applied our density model to efficiently generate Digitally Reconstructed Radiographs. This research is part of our effort to build a bone density atlas.
AB - We proposed an efficient and automatic method to reconstruct hierarchical tetrahedral meshes and build density models for bony anatomy from CT data sets. The mesh is reconstructed from contours extracted in CT images corresponding to the outer bone surfaces and the boundaries between compact bone, spongy bone and medullary cavity. Key problems, such as tiling problem, branching problem, correspondence problem, and constraint problem, have been solved. We then approximated bone density variations by means of continuous density functions in each tetrahedron. The density functions are written as smooth Bernstein polynomial spline expressed in terms of barycentric coordinates associated with each tetrahedron. We further performed the tetrahedral mesh simplification by edge collapsing and built hierarchical structure of multiple resolution meshes. We applied our density model to efficiently generate Digitally Reconstructed Radiographs. This research is part of our effort to build a bone density atlas.
UR - http://www.scopus.com/inward/record.url?scp=0035228460&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035228460&partnerID=8YFLogxK
U2 - 10.3233/978-1-60750-925-7-587
DO - 10.3233/978-1-60750-925-7-587
M3 - Conference contribution
C2 - 2001138146
AN - SCOPUS:0035228460
SN - 1586031430
SN - 9781586031435
T3 - Studies in Health Technology and Informatics
SP - 587
EP - 593
BT - Medicine Meets Virtual Reality 2001 - Outer Space, Inner Space, Virtual Space
PB - IOS Press
T2 - 2001 Medicine Meets Virtual Reality Conference: Outer Space, Inner Space, Virtual Space, MMVR 2001
Y2 - 24 January 2001 through 27 January 2001
ER -