公开(公告)号：US11049276B2

公开(公告)日：2021-06-29

申请号：US16396614

申请日：2019-04-26

Applicant: Industrial Technology Research Institute ,  China Medical University

Inventor： Jian-Ren Chen ,  Guan-An Chen ,  Su-Chen Huang ,  Yin-Chun Liu ,  Yue-Min Jiang ,  Chien-Hung Yu ,  Yu-Cheng Lo

IPC: G06K9/00 ,  G06T7/73 ,  G06T19/00 ,  G06T7/00

Abstract: A positioning guidance method for tooth brackets is provided. The positioning guidance method includes: obtaining, via an image capturing unit, an oral image; obtaining, via a processor, a position of a candidate tooth according to the contour of a plurality of teeth in the oral image; obtaining, via the processor, a bracket setting position corresponding to the candidate tooth by accessing dental model information from a storage device according to the position of the candidate tooth; obtaining, via the processor, a bracket image corresponding to a bracket from the oral image; and displaying, via the processor, guidance indication on a display unit according to a bracket position corresponding to the bracket image and the bracket setting position.

公开(公告)号：US10510145B2

公开(公告)日：2019-12-17

申请号：US15855082

申请日：2017-12-27

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Jian-Ren Chen ,  Guan-An Chen ,  Su-Chen Huang ,  Yue-Min Jiang

IPC: G06T7/00 ,  G06K9/62 ,  G06K9/46 ,  G06T7/33 ,  G06K9/20 ,  G06T7/11 ,  A61B3/00 ,  A61B3/14 ,  A61B3/12

Abstract: A medical image comparison method is firstly to obtain plural images of the same body at different time points. Then, obtain a first feature point group by detecting feature points in the first image captured at a first time point, and a second feature point group by identifying feature points in the second image captured at a second time point. An overlapping image information is generated by aligning the second image with the first image according to the first and second feature point groups. Then, window areas corresponding to a first matching image and a second matching image of the overlapping image information are extracted one by one by sliding a window mask, and an image difference ratio for each of the window areas is calculated. In addition, a medical image comparison system is also provided.