A5100639520- Solid State Laser Technologies
- Luminescence Properties of Advanced Materials
- Video Surveillance and Tracking Methods
- Human Pose and Action Recognition
- Magnesium Alloys: Properties and Applications
- Aluminum Alloys Composites Properties
- Advanced Fiber Laser Technologies
- Neural Networks Stability and Synchronization
- Advanced Vision and Imaging
- Face recognition and analysis
- Advanced Memory and Neural Computing
- Fuzzy Logic and Control Systems
- Human Motion and Animation
- Laser Design and Applications
- stochastic dynamics and bifurcation
- Thermal Analysis in Power Transmission
- Glass properties and applications
- Metaheuristic Optimization Algorithms Research
- Inorganic Fluorides and Related Compounds
- Advanced ceramic materials synthesis
- Sparse and Compressive Sensing Techniques
- Aluminum Alloy Microstructure Properties
- Chaos-based Image/Signal Encryption
- Advanced Neural Network Applications
- Natural Language Processing Techniques
Shanghai Jiao Tong University
2021-2025
University of Electronic Science and Technology of China
2009-2025
Beijing University of Posts and Telecommunications
2024
University of the Arts London
2024
Zhejiang University
2023
ShanghaiTech University
2023
Inner Mongolia University of Science and Technology
2022
Hebei University of Science and Technology
2021-2022
Harbin University of Science and Technology
2021-2022
Yanshan University
2022
Most existing person re-identification (re-id) methods require supervised model learning from a separate large set of pairwise labelled training data for every single camera pair. This significantly limits their scalability and usability in real-world scale deployments with the need performing re-id across many views. To address this problem, we develop novel deep method transferring information an dataset to new unseen (unlabelled) target domain without any domain. Specifically, introduce...
Occluded person re-identification is a challenging task as the appearance varies substantially with various obstacles, especially in crowd scenario. To address this issue, we propose Pose-guided Visible Part Matching (PVPM) method that jointly learns discriminative features pose-guided attention and self-mines part visibility an end-to-end framework. Specifically, proposed PVPM includes two key components: 1) (PGA) for feature pooling exploits more local features; 2) predictor (PVP)...
Real-time object detection is crucial for many applications of Unmanned Aerial Vehicles (UAVs) such as reconnaissance and surveillance, search-and-rescue, infrastructure inspection. In the last few years, Convolutional Neural Networks (CNNs) have emerged a powerful class models recognizing image content, are widely considered in computer vision community to be de facto standard approach most problems. However, based on CNNs extremely computationally demanding, typically requiring high-end...
Most existing person re-identification(Re-ID) approaches achieve superior results based on the assumption that a large amount of pre-labelled data is usually available and can be put into training phrase all at once. However, this not applicable to most real-world deployment Re-ID task. In work, we propose an alternative reinforcement learning human-in-the-loop model which releases restriction pre-labelling keeps upgrading with progressively collected data. The goal minimize human annotation...
The effect of erbium concentration on spectroscopic properties Er:CaF2 crystals was investigated. Two highest absorption cross-sections (σabs) at 967 nm were achieved in the 4at.% and 8at.% samples with value 0.22 × 10−20 cm2 0.23 cm2, respectively. And also had emission cross-section (σem) 2727 about 0.67 cm2. Lifetime 4I13/2 decreased faster than that 4I11/2 increase concentration. Under laser diode (LD) pumping, continuous-wave (CW) operations around 2.79 μm demonstrated 4at.%, 11at.%...
A mid-infrared Er doped CaF2 crystal was successfully grown by the bridgeman method. Efficiently continuous wave and Q-switched laser operations were demonstrated at 2.8 μm with a 4 at.% end-pumped fiber-coupled 974 nm diode laser. The output power of 295 mW obtained in compact linear cavity. stable passively Er:CaF2 also graphene saturable absorber. Under an absorbed pump 2.353 W, average 172 generated pulse duration 1.324 μs repetition rate 62.70 kHz, corresponding to single energy 2.74 μJ...
Carbon-based materials, known for their green sustainability and high specific surface area, have long been favored as electrode materials with commercial prospects. However, they often fall short of delivering the...
To provide insight into the interface structure in Ti particle-reinforced Mg matrix composites, this study investigates inherent Mg/Ti formed during solidification of supercooled melt on a (0001)Ti substrate using ab initio molecular dynamics (AIMD) simulations and density function theory (DFT) calculation. The resulting exhibits an orientation relationship 0001Mg//0001Ti with lattice mismatch approximately 8%. Detailed characterizations reveal occurrences 0001Mg plane rotation vacancy...
Rydberg blockade effect provides a convenient platform for simulating locally constrained many-body systems, such as quantum dimer models and loop models, especially their novel phases like topological orders gapless spin ice (QSI) phases. To discuss the possible phase diagram containing different QSIs in 3D arrays, here, we have constructed an extended Rokhsar-Kivelson (RK) Hamiltonian with equal-weight-superposition ground state fillings at RK point. Therefore, both perfect fixed local...
High security has always been the ultimate goal of image encryption, and closer ciphertext is to true random number, higher security. Aiming at popular chaotic encryption methods, particle swarm optimization (PSO) studied select parameters initial values systems so that sequence entropy. Different from other PSO-based proposed method takes system as particles instead encrypted images, which makes it have lower complexity therefore easier be applied in real-time scenarios. To validate...
The billions of public photos on online social media sites contain a vast amount latent visual information about the world. In this paper, we study feasibility observing state natural world by recognizing specific types scenes and objects in large-scale image collections. More specifically, whether can recreate satellite maps snowfall automatically snowy geo-tagged, time stamped images from Flickr. Snow recognition turns out to be surprisingly doff cult under-studied problem, so test variety...
This paper presents an inverse kinematic optimization layer (IKOL) for 3D human pose and shape estimation that leverages the strength of both optimization- regression-based methods within end-to-end framework. IKOL involves a nonconvex establishes implicit mapping from image’s keypoints body shapes to relative body-part rotations. The are inputs rotations solutions. However, this procedure is hard make differentiable. So, overcome issue, we designed Gauss-Newton differentiation (GN-Diff)...
A 3 at.% Tm-doped CaF2 crystal was grown successfully and used as a gain medium. high-efficiency continuous-wave laser wide tuning performance were demonstrated in this crystal, passive mode-locking operation realized for the first time, to best of our knowledge. For operation, maximum output power 2.71 W with high slope efficiency 70.3%. Using quartz birefringent filter, continuous range approximately 190 nm observed mode. In addition, passively mode-locked Tm3+:CaF2 emitting at 1886.8...
Trivalent rare earth ions have rich and unique energy levels arising from 4f inner shell configurations, which can be widely used in lasers, display, bioimaging, etc. As the f-f transition of is parity-forbidden, it necessary to dope active host with an appropriate coordination structure relax forbidden. In this work, a first principles calculation based on density functional theory was applied investigate local symmetries Nd3+ Nd3+,Y3+:SrF2 crystal. The computational results show that...
In this article, Eu-activated CaF2 single crystals were synthesized by Bridgman-Stockbarge method. The dependence of photoluminescence properties Eu: in UV-Vis regions on EuF3 doping concentrations investigated. While the concentration is increased from 0.6% to 6.0%, CIE (Commission Internationale de L'Eclairage) color coordinates can be tuned (0.28, 0.12) (0.60, 0.38), corresponding luminescence blue orange. XPS (X-ray Photoelectron Spectroscopy) measurements indicated that Eu2+ and Eu3+...