公开(公告)号：US09818186B2

公开(公告)日：2017-11-14

申请号：US15264311

申请日：2016-09-13

申请人： Korea Institute of Science and Technology

发明人： Sun Hee Kim ,  Young Jun Kim ,  Lae Hyun Kim ,  Deuk Hee Lee ,  Se Hyung Park

IPC分类号： G06K9/00 ,  G06T7/00 ,  G06T17/10 ,  G06T7/11

CPC分类号： G06T7/0012 ,  G06T7/11 ,  G06T7/136 ,  G06T7/149 ,  G06T17/10 ,  G06T2207/10004 ,  G06T2207/10081 ,  G06T2207/20161 ,  G06T2207/30008 ,  G06T2207/30201 ,  G06T2210/41

摘要： Disclosed is a method for forming a three-dimensional (3D) model of skin and mandible by automatic medical image segmentation which is performed in an automatic image segmentation and model formation server. The method includes (a) receiving 3D medical image data that is a set of two-dimensional (2D) images for horizontal planes of a face, (b) obtaining a contrast histogram based on distribution of contrasts of the 3D medical image data, and segmenting the 3D medical image data for the face into multiple regions separated into at least one partial region based on the contrast histogram, (c) extracting only the face by removing portions other than the face from the multiple regions for the face, and extracting a skin region of the face, (d) extracting the mandible from each of the 2D images for the horizontal planes of the face through a 2D detailed segmentation technique using an active contour method based on a level set function, and (e) reconstructing the extracted skin region and mandible as the 3D model.

公开(公告)号：US11600014B2

公开(公告)日：2023-03-07

申请号：US17024293

申请日：2020-09-17

申请人： KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

发明人： Deuk Hee Lee ,  Sung Hwan Lim ,  Jun Hyoung Ha

IPC分类号： G06T7/73 ,  G06T7/60 ,  A61M25/01

摘要： The present invention relates to a pose estimation method of an interventional medical device using a single-view X-ray image which is captured using a bendable interventional medical device equipped with a plurality of radiopaque markers and using an X-ray source. The pose estimation method includes an operation (a) of defining a circle assuming that the interventional medical device is bent at a constant curvature, an operation (b) of extracting a position value of the marker from an X-ray image obtained by the X-ray source projecting X-rays onto the markers, and an operation (c) of setting a projection plane and estimating a shape of the circle using a position value of the marker extracted from a projected image obtained by perspective-projecting the circle onto the projection plane and using the position value of the marker extracted from the X-ray image.