公开(公告)号：US20230233106A1

公开(公告)日：2023-07-27

申请号：US18011011

申请日：2021-06-17

Applicant: Kneedly AB

Inventor： Martin Fagerström ,  Alice Nilsson ,  Joel Nilsson ,  Alexander Rydevald ,  Kristian Samuelsson ,  Eric Hamrin Senorski ,  Linn Söderholm

IPC: A61B5/11 ,  G06V10/75 ,  G06V10/22 ,  G06T7/00 ,  G06V10/25 ,  G06T7/246

CPC classification number: A61B5/1128 ,  G06V10/755 ,  G06V10/23 ,  G06T7/0012 ,  G06V10/25 ,  G06T7/248 ,  G06V2201/033

Abstract: A solution for non-invasive determination of supraphysiological body joint kinematics. The solution obtains external images related to a test procedure of the body joint and performs image analysis on the obtained images to define a pattern of a plurality of spatial points in a region of interest. Each individual spatial point is defined by a unique pattern of neighboring surrounding pixels in each image, and the pattern is part of a high-contrast speckle pattern applied to the body joint. The solution identifies displacements of the spatial points in subsequently obtained images by tracing a location of the unique pattern of neighboring pixels in each image in relation to a base image of the body joint, calculates deformation measures from the displacements of the plurality of spatial points, and obtains deformation measures of a reference body joint. The solution compares the deformation measures and determines supraphysiological body joint kinematics from the comparison.