Title:
PARALLEL DATA ACCESS METHOD AND SYSTEM FOR MASSIVE REMOTE-SENSING IMAGES
Document Type and Number:
WIPO Patent Application WO/2020/252799
Kind Code:
A1
Abstract:
Disclosed are a parallel data access method and system for massive remote-sensing images. A storage method therefor comprises: 1) using a set grid system to segment a remote-sensing image to be processed, and data in each grid corresponding to a data block; 2) collecting a data access log of an underlying distributed object storage system Ceph in a past period of time, and measuring a load index of each Ceph cluster and a load index of each pool; 3) selecting, according to the load indexes determined in step 2), a pool with the minimum load in a Ceph cluster with the minimum current load to serve as a storage position of a current data block, and writing each data block into a corresponding pool; 4) after each data block is successfully stored, returning a data identifier dataid and a data access path of the remote-sensing image; and 5) storing metadata of each data block in a metadatabase. The present invention can support rapid and high-concurrency reading and writing of large-area data of a grid data block as divided in step 1).
More Like This:
Inventors:
WANG XUEZHI (CN)
ZHAO JIANGHUA (CN)
ZHOU XIAOHUA (CN)
LIN QINGHUI (CN)
ZHOU YUANCHUN (CN)
ZHAO JIANGHUA (CN)
ZHOU XIAOHUA (CN)
LIN QINGHUI (CN)
ZHOU YUANCHUN (CN)
Application Number:
PCT/CN2019/092487
Publication Date:
December 24, 2020
Filing Date:
June 24, 2019
Export Citation:
Assignee:
COMPUTER NETWORK INF CT CAS (CN)
International Classes:
G06F9/50; G06F16/58; G06T1/20; G06T1/60
Foreign References:
| CN101339570A | 2009-01-07 | |||
| CN108829836A | 2018-11-16 | |||
| US10212229B2 | 2019-02-19 |
Attorney, Agent or Firm:
BEIJING JOYSHINE INTELLECTUAL PROPERTY OFFICE (CN)
Download PDF: