Title:
RAPID WIDE-ANGLE STITCHING METHOD FOR HIGH-RESOLUTION IMAGES
Document Type and Number:
WIPO Patent Application WO/2021/169334
Kind Code:
A1
Abstract:
A rapid wide-angle stitching method for high-resolution images, which is intended to improve the speed and accuracy of image matching and comprises: downsampling multiple raw images to be stitched; determining an overlapping area between each downsampled image; using a SURF algorithm to detect feature points in the overlapping area; for the detected feature points, using a BRIEF algorithm to generate feature point descriptors; for the feature point descriptors, using a Brute-Force Matcher algorithm to perform crude matching of feature point pairs; calculating the Hamming distance between two feature point descriptors, and rejecting wrong matching; using a RANSAC algorithm to perform refined matching, solving for a homography matrix, and obtaining the relative positional relationship between each image; and performing image fusion on the overlapping area of each raw image on the basis of a fading in/out weighted average algorithm so as to fuse and stitch the images into a wide-angle image.
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Inventors:
LI XIANGCHUN (CN)
ZHANG HAO (CN)
JIA XINXIN (CN)
WANG LEI (CN)
WANG QIWEI (CN)
CHENG YAN (CN)
WANG XIN (CN)
DUAN LIYA (CN)
CAI YULONG (CN)
LI HENG (CN)
ZHANG HAO (CN)
JIA XINXIN (CN)
WANG LEI (CN)
WANG QIWEI (CN)
CHENG YAN (CN)
WANG XIN (CN)
DUAN LIYA (CN)
CAI YULONG (CN)
LI HENG (CN)
Application Number:
PCT/CN2020/122297
Publication Date:
September 02, 2021
Filing Date:
October 21, 2020
Export Citation:
Assignee:
INST OCEANOGRAPHIC INSTR SHANDONG ACADEMY OF SCIENCES (CN)
International Classes:
G06T7/33; G06T3/00; G06T7/38
Foreign References:
| CN111445389A | 2020-07-24 | |||
| CN110443295A | 2019-11-12 |
Other References:
HAICHANG ZENG: "Dissertation", 1 June 2018, NANCHANG HANGKONG UNIVERSITY, CN, article HAICHANG ZENG: "Research on Remote Sensing Image Stitching Based on Features by Unmanned Aerial Vehicle", pages: 1 - 62, XP055841630
WEN ERYA: "Master Thesis", 30 June 2017, UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY, CN, article WEN ERYA: "Research and Implementation of Unmanned Aerial Vehicle Image Processing Technology", pages: 1 - 80, XP055841635
LU LIUJIE, HU GUANGPENG; BAO WENXIANG: "Image Fusion Technology Based on Improved SURF Algorithm", JISUANJI YU SHUZI GONGCHENG - COMPUTER AND DIGITAL ENGINEERING, ZHONGGUO CHUANBO ZHONGGONG JITUAN GONGSI. DI-709 YANJIUSUO, CN, vol. 47, no. 7, 1 July 2019 (2019-07-01), CN, pages 1684 - 1687,1814, XP055841646, ISSN: 1672-9722, DOI: 10.3969/j.issn.1672-9722.2019.07.25
WEN ERYA: "Master Thesis", 30 June 2017, UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY, CN, article WEN ERYA: "Research and Implementation of Unmanned Aerial Vehicle Image Processing Technology", pages: 1 - 80, XP055841635
LU LIUJIE, HU GUANGPENG; BAO WENXIANG: "Image Fusion Technology Based on Improved SURF Algorithm", JISUANJI YU SHUZI GONGCHENG - COMPUTER AND DIGITAL ENGINEERING, ZHONGGUO CHUANBO ZHONGGONG JITUAN GONGSI. DI-709 YANJIUSUO, CN, vol. 47, no. 7, 1 July 2019 (2019-07-01), CN, pages 1684 - 1687,1814, XP055841646, ISSN: 1672-9722, DOI: 10.3969/j.issn.1672-9722.2019.07.25
Attorney, Agent or Firm:
QINGDAO LZ PATENT AND TRADEMARK OFFICE CO., LTD. (CN)
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