Title:
IMAGE FEATURE POINT TRACKING METHOD AND APPARATUS, IMAGE FEATURE POINT MATCHING METHOD AND APPARATUS, AND COORDINATE OBTAINING METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/173194
Kind Code:
A1
Abstract:
An image feature point tracking method and apparatus, an image feature point matching method and apparatus, a space coordinate obtaining method and apparatus, a computer device, and a storage medium. The tracking method comprises: determining the horizontal line corresponding to a target feature point in a second image (S101); obtaining a first gray value of an initial tracking point located on the horizontal line (S102); obtaining a second gray value and a gray gradient value of the target feature point (S103); tracking, according to the first gray value of the initial tracking point as well as the second gray value and the gray gradient value of the target feature point, the position of a matching point in the second image in the direction of the horizontal line (S104). Tracking and matching are performed on the horizontal line of the second image by combining the second gray value and the gray gradient value of the target feature point as well as the first gray scale value of the initial tracking point.
More Like This:
Inventors:
LUO HANJIE (CN)
Application Number:
PCT/CN2019/126816
Publication Date:
September 03, 2020
Filing Date:
December 20, 2019
Export Citation:
Assignee:
GUANGZHOU SHIYUAN ELECTRONICS CO LTD (CN)
International Classes:
G06T7/246
Foreign References:
| CN109872344A | 2019-06-11 | |||
| CN109102524A | 2018-12-28 | |||
| CN101887589A | 2010-11-17 | |||
| CN101976455A | 2011-02-16 | |||
| US5383013A | 1995-01-17 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
Download PDF:
Previous Patent: SATELLITE TIME TRANSFER DEVICE
Next Patent: BLOCK CHAIN TECHNOLOGY BASED PAYMENT METHOD AND WATCH
Next Patent: BLOCK CHAIN TECHNOLOGY BASED PAYMENT METHOD AND WATCH