公开(公告)号：US20240202898A1

公开(公告)日：2024-06-20

申请号：US18554919

申请日：2022-03-11

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Hoon SOHN ,  Jae Mook CHOI ,  Zhanxiong MA ,  Ki Young KIM

IPC: G06T7/00 ,  G01P15/00 ,  G06T5/20 ,  G06T5/70 ,  G06T7/246 ,  G06T7/277

CPC classification number: G06T7/0002 ,  G01P15/00 ,  G06T5/20 ,  G06T5/70 ,  G06T7/248 ,  G06T7/277 ,  G06T2207/20004 ,  G06T2207/30184

Abstract: Disclosed are a method and a system for measuring a displacement of a structure based on fusion of asynchronous vision measurement data of natural target and acceleration data of the structure. A scale factor, which is a conversion factor between a pixel resolution of the image frame data and a distance resolution of real space, is calculated using image frame data taken at a predetermined first sample frequency of a stationary target outside the structure by a camera installed on the structure, and acceleration data measured at a predetermined second sample frequency by an accelerometer installed on the structure, over time. A vision-based displacement value of the structure is estimated using a feature point matching algorithm and the scale factor.