公开(公告)号：US20220304751A1

公开(公告)日：2022-09-29

申请号：US17418358

申请日：2020-12-29

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Liping NIE ,  Hao WANG

IPC: A61B34/20 ,  G06T7/11 ,  G06T7/60 ,  G06T7/70 ,  G06T7/30 ,  A61B34/32

Abstract: The embodiment of the present disclosure provides an optical scale comprising a support and at least three markers, wherein, the markers are fixed on the support; among all the markers, there are at least three markers whose geometric centers are not collinear; any two of the markers are different in at least one of size and shape, and any different markers do not contact each other; the material of the marker and the support enables that in a three-dimensional image obtained by three-dimensional imaging technology, the difference between a gray scale of the marker and a gray scale of the support exceeds a first predetermined value. The embodiment of the present disclosure provides a method for coordinate system registration. The embodiment of the present disclosure further provides a method for coordinate system registration by using the above optical scale.

公开(公告)号：US20220405965A1

公开(公告)日：2022-12-22

申请号：US17639220

申请日：2021-03-16

Applicant: BOE Technology Group Co., Ltd.

Inventor： Liping NIE

IPC: G06T7/73 ,  A61B34/10 ,  A61B90/00 ,  G06T7/149 ,  G06T17/00

Abstract: A positioning tracking member, a method for recognizing a maker (20), a storage medium, and an electronic device. By directly sticking a positioning tracking member onto the body of a patient, a rigid connection between the positioning tracking member and the human body is not required, thereby avoiding damage to the human body. Furthermore, in combination with a recognition algorithm of the maker (20), recognition of the maker (20) in the image space is quickly achieved by comparing the actual size of each candidate connected region in a three-dimensional medical model with that of the marker (20), the recognition speed being high and the recognition accuracy being high.