A5102017915- Welding Techniques and Residual Stresses
- Additive Manufacturing Materials and Processes
- Industrial Vision Systems and Defect Detection
- Thermography and Photoacoustic Techniques
- Additive Manufacturing and 3D Printing Technologies
- Advanced Image Fusion Techniques
- Non-Destructive Testing Techniques
- Image and Signal Denoising Methods
- Manufacturing Process and Optimization
- Photonic and Optical Devices
- Infrared Target Detection Methodologies
- Sparse and Compressive Sensing Techniques
- Image Processing Techniques and Applications
- Optical Polarization and Ellipsometry
- Plant Surface Properties and Treatments
- Optical and Acousto-Optic Technologies
- Plasmonic and Surface Plasmon Research
- Matrix Theory and Algorithms
- Advanced Text Analysis Techniques
- Photonic Crystals and Applications
- Photoacoustic and Ultrasonic Imaging
- Rheology and Fluid Dynamics Studies
- Advanced Neural Network Applications
- Anomaly Detection Techniques and Applications
- Image Enhancement Techniques
Nanjing University of Science and Technology
2015-2024
Beth Israel Deaconess Medical Center
2021
Harvard University
2021
North China University of Water Resources and Electric Power
2013
Yunnan University
2013
Chongqing University
2011
Soochow University
2011
Hebei University
2009
Hebei University of Engineering
2009
Wire Arc Additive Manufacturing (WAAM) has developed rapidly in recent years and been widely used industry. Cold Metal Transfer (CMT), a kind of Gas Welding (GMAW), is the modeling thin parts. In monitoring CMT process, it necessary to monitor weld reinforcement deposited layer. It can provide effective alerting for welding help improve quality. this paper, position molten pool image on layer are determined by visual acquisition system. According data same direction additive manufacturing...
Recent advances in unsupervised domain adaptation (UDA) show that transferable prototypical learning presents a powerful means for class conditional alignment, which encourages the closeness of cross-domain centroids. However, inner-class compactness and underlying fine-grained subtype structure remained largely underexplored. In this work, we propose to adaptively carry out subtype-aware alignment by explicitly enforcing class-wise separation subtype-wise with intermediate pseudo labels....
Depression can be reflected by long-term human spatio-temporal facial behaviours. While face videos recorded in real-world usually have long and variable lengths, existing video-based depression assessment approaches frequently re-sample/down-sample such to short equal-length videos, or split each video into several segments, where segment-level behaviours are suppressed as a vector-style representations for RNN-based (video-level) modelling. Both strategies lead crucial information loss...
Vision-based welding seam tracking is an important and unique branch of automation. Active vision systems achieve accurate feature extraction by using auxiliary light source, but this will introduce extra costs the real-time performance be affected. In contrast, passive better their structure relatively simple. This paper proposes a system in Plasma Arc Welding (PAW) based on semantic segmentation. The BiseNetV2 network adopted online hard example mining (OHEM) used to improve segmentation...
In the multi-bead and multi-layer arc additive manufacturing process, information of cladding reinforcement reflects welding quality to a certain extent, so it is great significance monitor layers in real time. this paper, point cloud density search method used segment single weld bead multi seam, then each extracted separately when bottom plate deformed due high temperature, residual-based prediction model constructed for quantitative forecasting transient before solidification block layer...
As the basic visual morphological characteristics of molten pool, contour extraction plays an important role in on-line monitoring welding quality. The limitations traditional edge detection algorithms make deep learning play a more task target segmentation. In this paper, pool sensing system tungsten inert gas (TIG) process environment is established and corresponding image data set made. Based on residual network, multi-scale feature fusion semantic segmentation network Res-Seg designed....
Weld quality is generally determined by reinforcement and penetration depth of weld bead in arc welding. Penetration reflects strength shape. What's more, there a strong coupling between them, therefore it necessary to monitor them collaboratively quantitatively. In this paper, vision sensor system utilized collect non-interfering molten pool images during CMT (Cold Metal Transfer) welding process. Meanwhile, according the locating metallographic diagram, position image on measured, as well...
Wettability is an important interface characteristic of plant leaves. It used to describe what happened when adhesive contacted with a leaf surface. The surface free energy parameter that can be estimate the cohesion work (cohesive strength) between liquid drop and In this paper, sessile method was employed in study measure static contact angel Alkyl Polyglucoside (APG) on cucumber On basis which, solid leaves calculated by mathematic model. From these measurements, estimated Zisman method,...
In recent years, with the rapid advancement of hyperspectral imaging technology, a growing number reconstruction approaches have arisen. However, most present technologies drawback being unable to perform both quick spectrum measurement and high image resolution at same time. order address this issue, article proposes system via subsampling coding. First, scene is subsampled using designed Hadamard coding matrix, then suitable network structure for (HSI) super-resolution investigated, lastly...
Abstract The assessment of welding quality in battery shell production is a crucial aspect production. Battery surface reconstruction can inspect the weld instead relying on human inspection. This paper proposes defect detection method small field view based 2D pre-processing and an improved-region-growth method. A novel approximation-based, high-precision, simple operation for line structure optical plane calibration under presented, with measurement error within 0.01 mm. By scan images,...
In 1954, Alston S. Householder published \textit{Principles of Numerical Analysis}, one the first modern treatments on matrix decomposition that favored a (block) LU decomposition-the factorization into product lower and upper triangular matrices. And now, has become core technology in machine learning, largely due to development back propagation algorithm fitting neural network. The sole aim this survey is give self-contained introduction concepts mathematical tools numerical linear algebra...
Infrared-visible fusion has great potential in night-vision enhancement for intelligent vehicles. The performance depends on rules that balance target saliency and visual perception. However, most existing methods do not have explicit effective rules, which leads to the poor contrast of target. In this paper, we propose SGVPGAN, an adversarial framework high-quality infrared-visible image fusion, consists network based Adversarial Semantic Guidance (ASG) Visual Perception (AVP) modules....