2. 您的位置
3. 首页
4. 期刊论文
5. 融合卷积神经网络和相关滤波的焊缝自动跟踪

融合卷积神经网络和相关滤波的焊缝自动跟踪

来源 :中国激光 | 被引量 : 0次 | 上传用户：zybzsj

【摘 要】

：

自动焊接时,为提高焊缝坡口关键位置的检测精度和抗干扰能力,基于卷积神经网络设计了焊缝特征点提取网络.该网络通过卷积、池化操作对图像中焊缝激光线的位置信息和拐点特征信息进行提取;引入先验框,将焊缝特征点检测从全局定位转为局部定位;识别定位模块通过结合特征点位置预测与特征点存在置信度预测,抑制了噪声干扰.为保证实际的焊接效率,融合相关滤波算法完成了焊缝关键位置的自动追踪.核相关滤波通过快速傅里叶变换降低了算法的时间复杂度,引入循环矩阵循环移位样本进行充分训练,保证了跟踪速度和精度.实验结果表明,焊缝特征点定位

【作 者】

：

杨国威 周楠 杨敏 张永帅 王以忠 

【机 构】

：

天津科技大学电子信息与自动化学院,天津300222

【出 处】

：

中国激光

【发表日期】

：

2021年22期

【关键词】

：

图像处理 深度学习 焊缝检测 焊缝跟踪 相关滤波 

下载到本地 , 更方便阅读

下载此文 赞助VIP

声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架

论文部分内容阅读

自动焊接时,为提高焊缝坡口关键位置的检测精度和抗干扰能力,基于卷积神经网络设计了焊缝特征点提取网络.该网络通过卷积、池化操作对图像中焊缝激光线的位置信息和拐点特征信息进行提取;引入先验框,将焊缝特征点检测从全局定位转为局部定位;识别定位模块通过结合特征点位置预测与特征点存在置信度预测,抑制了噪声干扰.为保证实际的焊接效率,融合相关滤波算法完成了焊缝关键位置的自动追踪.核相关滤波通过快速傅里叶变换降低了算法的时间复杂度,引入循环矩阵循环移位样本进行充分训练,保证了跟踪速度和精度.实验结果表明,焊缝特征点定位的均方根误差为0.207 mm,最大定位误差为0.71 mm.本文所提算法的定位精度较高,而且适用性和抗噪声干扰能力较强,能够满足焊缝自动跟踪系统的要求.

其他文献

Performance comparison of lithium-niobate-based extremely high-field single-cycle terahertz sources[

Tilted-pulse-front-pumping[TPFP]lithium-niobate terahertz[THz]pulse sources are widely used in pump-probe and control experiments since they can generate broadband THz pulses with tens of microjoules of energy.However,the conventional TPFP setup suffers f

期刊

terahertz pulse generationnonlinear opticsultrafast optics

Vector dynamics of ultrafast cylindrical vector beams in a mode-locked fiber laser

The vector dynamics of solitons are crucial but easily neglected for realizing vortex solitons.In this Letter,we investigate the effect of vector dynamics on cylindrical vector beams[CVBs]implementation and propose a novel technical method to realize femt

期刊

cylindrical vector beamultrafast optical switchlaser mode-locking

Optical design of a compact and high-transmittance compressive sensing imaging system enabled by fre

Using compressive sensing for imaging has many applications,and it is an important branch of computational imaging.In this Letter,freeform surfaces are introduced in the hardware optical system design of a compressive sensing imager.The system works under

期刊

compressive sensingfreeform opticscompactness and high-transmittancejoint opt

Design of multi-passband polymer multilayer film and its application in photovoltaic agriculture

To solve the issue of the contradiction between photovoltaic power generation and plant photosynthesis for sunlight demand,we propose a design method of multi-passband polymer multilayer optical structure.Using polycarbonate[PC]and polymethyl methacrylate

期刊

polymer multilayer film designmulti-passbandphotovoltaic power generationphot

Liquid crystal devices for vector vortex beams manipulation and quantum information applications [In

Vector vortex beams[VVBs]have attracted significant attention in both classical and quantum optics.Liquid crystal[LC],beyond its applications in information display,has emerged as a versatile tool for manipulating WBs.In this review,we focus on the functi

期刊

liquid crystalvector beamq-plateorbital angular momentumentanglementtwo-pho

Sequential 3→1 quantum random access code utilizing unsharp measurements

Quantum random access codes[QRACs]are important communication tasks that are usually implemented in prepare-and-measure scenarios.The receiver tries to retrieve one arbitrarily chosen bit of the original bit-string from the code qubit sent by the sender.I

期刊

quantum random access codesunsharp measurementprepare-and-measure scenario

Linearized wideband and multi-carrier link based on TL-ANN

The analog photonics link[APL]is widely used in microwave photonics.However,in wideband and multi-carrier systems,the third inter-modulation distortion[IMD3]and cross-modulation distortion[XMD]will jointly limit the spurious-free dynamic range[SFDR]of lin

期刊

analog photonics linkmodulation distortionartificial neural networkstransfer

Chip-scale Brillouin instantaneous frequency measurement by use of one-shot frequency-to-power mappi

We demonstrate a chip-scale scheme of Brillouin instantaneous frequency measurement[IFM]in a CMOS-compatible doped silica waveguide chip.In the chip-scale Brillouin IFM scheme,the frequency-to-power mapping process is achieved by one-shot detection withou

期刊

instantaneous frequency measurementstimulated Brillouin scatteringlock-in ampl

基于Yb∶ YAG/YAG/Cr∶ YAG/YAG复合晶体的高效被动调Q激光器

通过实验验证了利用中心波长为940 nm的半导体激光器泵浦Yb∶ YAG/YAG/Cr∶ YAG/YAG复合晶体可获得高效率的被动调Q激光输出.研究了耦合输出镜透过率、泵浦光斑大小对基于Yb∶ YAG/YAG/Cr∶YAG/YAG和Yb∶ YAG/Cr∶ YAG/YAG复合晶体的被动调Q激光器的输出参数的影响.当泵浦功率为17 W时,基于Yb∶ YAG/YAG/Cr∶ YAG/YAG复合晶体的被动调Q激光器的最大平均输出功率为7.41 W、斜率效率为57.0％、光-光效率为43.6％、脉冲宽度为4.6 n

期刊

激光器掺镱激光器二极管泵浦被动调Q激光器固态激光器

Incorporation of Ag into Cu(In,Ga)Se2 films in low-temperature process

Chalcopyrite Cu(In,Ga)Se2[CIGS]thin films deposited in a low-temperature process[450℃]usually produce fine grains and poor crystallinity.Herein,different Ag treatment processes,which can decrease the melting temperature and enlarge band gap of the CIGS fi

期刊

Cu[InGa]Se2 thin filmlow-temperature deposition processAg dopingcrystallinit