The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2026
Filed:
Mar. 06, 2023
Zhejiang Changxing Heliang Intelligent Equipment Co., Ltd, Zhejiang, CN;
Nanjing University of Aeronautics and Astronautics, Jiangsu, CN;
Liangyou Li, Zhejiang, CN;
Zhengdong Zhou, Zhejiang, CN;
Chunyan Peng, Zhejiang, CN;
Lingwei Zhang, Zhejiang, CN;
Liang Zhang, Zhejiang, CN;
Yuanbin Wang, Zhejiang, CN;
Weijiang XI, Zhejiang, CN;
Zefeng Song, Zhejiang, CN;
Bing Lu, Zhejiang, CN;
Yunfei Xu, Zhejiang, CN;
Wentao Ji, Zhejiang, CN;
Jiawen Wang, Zhejiang, CN;
Yifan Zhou, Zhejiang, CN;
ZHEJIANG CHANGXING HELIANG INTELLIGENT EQUIPMENT CO., LTD, Zhejiang, CN;
NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS, Jiangsu, CN;
Abstract
The present disclosure discloses a bending angle detection method for tube bending. The detection method includes the following steps: binarizing a to-be-recognized image and extracting a region of interest (ROI) to obtain binary images of two linear segment regions, where the to-be-recognized image is an image of a bent tube; and calculating a bending angle according to the binary images of the two linear segment regions. The present disclosure provides an online method and system for measuring a bending angle based on images, which is cost-effective and has high efficiency and strong universality.