SIA OpenIR  > 智能检测与装备研究室
基于曲率尺度空间的激光拼焊焊缝边界点识别方法
Alternative TitleCurvature scale space-based boundary points detection of weld seam of tailored blanks laser welding
张万江; 许敏
Department智能检测与装备研究室
Source Publication焊接学报
ISSN0253-360X
2013
Volume34Issue:7Pages:93-96, 117-118
Indexed ByEI ; CSCD
EI Accession number20133516670672
CSCD IDCSCD:4903043
Contribution Rank2
Keyword激光拼焊 结构光 特征点识别 曲率尺度空间
Abstract针对激光拼焊焊缝结构光光纹图像畸变小、特征点不明显且易受噪声干扰的特点,提出了一种基于改进的曲率尺度空间的特征点识别方法.该方法首先采用较高尺度的高斯卷积模板,对光纹曲线进行卷积滤波并使用自适应K-余弦法计算轮廓上每一点的曲率并选取特征点;然后在小尺度高斯模板下跟踪定位大尺度模板下获得的特征点候选点,以获得小尺度模板下光纹曲线特征点的准确位置.在光纹曲线的离散曲率计算过程中,考虑了支持区域对曲率计算的影响,提出了一种自适应K-余弦法,与传统的离散曲率计算公式相比,自适应K-余弦法具有更好的抗干扰能力.
Other AbstractFeature point detection of laser stripe is the key technology for automatic seam quality inspection. Due to small aberrance and sensitive to noise of laser stripe for tailored blanks laser welding, the traditional feature point extraction methods are difficult to obtain accurate feature points. On the basis of analyzing the image features of laser stripe,an improved multi-scale feature point detection method was proposed based on curvature scale space ( CSS) technique. Firstly,a small-scale Gaussian template is used to smooth the centerline of laser stripe. Secondly,the improved CSS adopts an adaptive K-cosine algorithm,which has a dynamic region of support and excellent noise suppression performance to calculate the curvature of centerline smoothed by large-scale Gaussian template. Thirdly,the local extrema of the curvature extracted by a threshold T are used to candidate feature points. Lastly,the candidate feature points are refined in small-scale Gaussian template. The results showed that the improved CSS algorithm has better robust and anti-interference than the that of CSS algorithm.
Language中文
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/13938
Collection智能检测与装备研究室
Affiliation1.沈阳建筑大学信息与控制工程学院
2.中国科学院沈阳自动化研究所
Recommended Citation
GB/T 7714
张万江,许敏. 基于曲率尺度空间的激光拼焊焊缝边界点识别方法[J]. 焊接学报,2013,34(7):93-96, 117-118.
APA 张万江,&许敏.(2013).基于曲率尺度空间的激光拼焊焊缝边界点识别方法.焊接学报,34(7),93-96, 117-118.
MLA 张万江,et al."基于曲率尺度空间的激光拼焊焊缝边界点识别方法".焊接学报 34.7(2013):93-96, 117-118.
Files in This Item: Download All
File Name/Size DocType Version Access License
基于曲率尺度空间的激光拼焊焊缝边界点识别(823KB) 开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[张万江]'s Articles
[许敏]'s Articles
Baidu academic
Similar articles in Baidu academic
[张万江]'s Articles
[许敏]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[张万江]'s Articles
[许敏]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 基于曲率尺度空间的激光拼焊焊缝边界点识别方法.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.