Title:
METHOD, APPARATUS AND SYSTEM FOR ACQUIRING KEY FRAME IMAGE, AND THREE-DIMENSIONAL RECONSTRUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/105415
Kind Code:
A1
Abstract:
The present disclosure relates to a method, apparatus and system for acquiring a key frame image, and a three-dimensional reconstruction method, and relates to the technical field of computers. The acquisition method comprises: determining point cloud data of a target object according to a multi-frame depth image, acquired by an image acquisition device at the current photographic position, of the target object and intrinsic parameters of the image acquisition device; according to position information of the point cloud data of the target object, the intrinsic parameters and extrinsic parameters of the current photographic position, establishing a three-dimensional model capable of surrounding the target object, and dividing the surface of the three-dimensional model into a plurality of grids, wherein each grid corresponds to one photographic position; and according to the grids corresponding to photographic positions, and the photographic positions and the photographic directions of the multi-frame depth images acquired at the photographic positions, determining a key frame image of the target object at the corresponding photographic position in the multi-frame depth images acquired at the photographic positions.
Inventors:
DU FENG (CN)
YAN QINGAN (CN)
LIU XIANGJUN (CN)
GUO FUSHENG (CN)
YAN QINGAN (CN)
LIU XIANGJUN (CN)
GUO FUSHENG (CN)
Application Number:
PCT/CN2021/119860
Publication Date:
May 27, 2022
Filing Date:
September 23, 2021
Export Citation:
Assignee:
BEIJING WODONG TIANJUN INFORMATION TECHNOLOGY CO LTD (CN)
BEIJING JINGDONG CENTURY TRADING CO LTD (CN)
BEIJING JINGDONG CENTURY TRADING CO LTD (CN)
International Classes:
G06T17/20; G06T7/80
Foreign References:
| CN109544677A | 2019-03-29 | |||
| CN107170037A | 2017-09-15 | |||
| CN107833253A | 2018-03-23 | |||
| CN104992441A | 2015-10-21 | |||
| CN112348958A | 2021-02-09 |
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
Download PDF:
Previous Patent: TRAIN INTEGRITY MONITORING APPARATUS AND METHOD BASED ON RFID TECHNOLOGY
Next Patent: PRINTED CIRCUIT BOARD
Next Patent: PRINTED CIRCUIT BOARD