公开(公告)号：US10991157B2

公开(公告)日：2021-04-27

申请号：US16664517

申请日：2019-10-25

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jung-Jae Yu ,  Kyung-Kyu Kang ,  Hye-Sun Kim ,  Chang-Joon Park ,  Yun-Ji Ban ,  Dong-Wan Ryoo ,  Man-Hee Lee ,  Chang-Woo Chu

IPC: G06T17/05 ,  G06T17/20 ,  G06T19/20 ,  G06T7/32

Abstract: Disclosed herein are a method and apparatus for matching 3D terrain information based on aerial images captured at different altitudes. The method includes receiving a high-altitude numerical height model based on a terrain image captured at a specific high altitude; receiving 3D terrain information observed from a low altitude, which is generated based on a terrain image captured at an altitude lower than the specific high altitude; generating a low-altitude numerical height model by converting the 3D terrain information into a numerical model in the same form as the high-altitude numerical height model; measuring the cross-correlation between the high-altitude numerical height model and the low-altitude numerical height model, thereby calculating matching parameters for enabling the low-altitude numerical height model to match the high-altitude numerical height model; and adjusting the geospatial coordinates of the 3D terrain information based on the matching parameters and outputting georeferenced 3D terrain information in the same coordinate system as the high-altitude numerical height model.

公开(公告)号：US10217281B2

公开(公告)日：2019-02-26

申请号：US15649539

申请日：2017-07-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung-Jae Yu ,  Kyung-Kyu Kang ,  Hye-Sun Kim ,  Chang-Joon Park ,  Yun-Ji Ban ,  Dong-Wan Ryoo ,  Man-Hee Lee ,  Chang-Woo Chu

IPC: G06T5/00 ,  H04N13/282 ,  G06T17/20 ,  G06T7/246 ,  H04N13/296

Abstract: Disclosed herein are an apparatus and method for reconstructing a 3D model. The apparatus for reconstructing a 3D model includes an image acquisition unit for acquiring multi-view images by receiving image signals captured by multiple drones using cameras, a geometric calibration unit for estimating motion variables of the drones based on the acquired multi-view images, and a 3D model creation unit for reconstructing a 3D model of a dynamic object from the matched multi-view images using a multi-view stereo method.