A5018795899- Multilevel Inverters and Converters
- Advanced DC-DC Converters
- Interactive and Immersive Displays
- Advanced Steganography and Watermarking Techniques
- Hand Gesture Recognition Systems
- Microgrid Control and Optimization
- Tactile and Sensory Interactions
- Technology and Security Systems
- Chaos-based Image/Signal Encryption
- Silicon Carbide Semiconductor Technologies
- Advanced Neural Network Applications
- Image Enhancement Techniques
- Building Energy and Comfort Optimization
- Speech and Audio Processing
- Digital Imaging for Blood Diseases
- Gaze Tracking and Assistive Technology
- Infection Control and Ventilation
- Digital Media Forensic Detection
- Indoor and Outdoor Localization Technologies
- Image and Video Stabilization
- Wireless Power Transfer Systems
- Advanced Image Fusion Techniques
- Error Correcting Code Techniques
- Innovative Human-Technology Interaction
- Smart Grid Energy Management
Tsinghua University
2019-2024
Taiyuan University of Technology
2021-2024
Central South University
2022-2023
Beihang University
2014-2019
Changchun University of Science and Technology
2019
Macau University of Science and Technology
2010-2011
West Anhui University
2009
Ten Chen Hospital
2009
The medical decision-making system is an advanced for patients that can assist doctors in their work. Osteosarcoma a primary malignant tumor of the bone, due to its specificity, such as blurred borders, diverse morphology, and inconsistent scales. Diagnosis quite difficult, especially developing countries, where resources are inadequate per capita there lack professionals, time spent diagnosis process may lead gradual deterioration disease. To address these, we discuss osteosarcoma-assisted...
We present DualRing, a novel ring-form input device that can capture the state and movement of user's hand fingers. With two IMU rings attached to thumb index finger, DualRing sense not only absolute gesture relative ground but also pose among segments. To enable natural thumb-to-finger interaction, we develop high-frequency AC circuit for on-body contact detection. Based on sensing information outline interaction space divide it into three sub-spaces: within-hand hand-to-surface...
We present HandSee, a novel sensing technique that can capture the state and movement of user's hands touching or gripping smartphone. place right angle prism mirror on front camera to achieve stereo vision scene above touchscreen surface. develop pipeline extract depth image from monocular RGB image, which consists three components: matching algorithm estimate pixel-wise scene, CNN-based online calibration detect hand skin, merging outputs hands. Building output, substantial set valuable...
Aircraft passengers are more and demanding in terms of thermal comfort. But it is not yet easy for aircraft crew to control the environment system (ECS) that satisfies comfort most due a number causes. This paper adopts corrected predicted mean vote (PMV) model an adaptive assess conditions 31 investigated flights draws conclusion there does exist uncomfortable phenomenon civil cabins, especially some short-haul continental flights. It necessary develop way predict sensation direct ECS. Due...
Gestures performed accompanying the voice are essential for interaction to convey complementary semantics purposes such as wake-up state and input modality. In this paper, we investigated voice-accompanying hand-to-face (VAHF) gestures interaction. We targeted on because relate closely speech yield significant acoustic features (e.g., impeding propagation). conducted a user study explore design space of VAHF gestures, where first gathered candidate then applied structural analysis them in...
Wake-up-free techniques (e.g., Raise-to-Speak) are important for improving the voice input experience. We present ProxiMic, a close-to-mic (within 5 cm) speech sensing technique using only one microphone. With user keeps microphone-embedded device close to mouth and speaks directly without wake-up phrases or button presses. To detect speech, we use feature from pop noise observed when blows air onto Sound is first passed through low-pass adaptive threshold filter, then analyzed by CNN which...
A modular Sigma DC/DC converter with wide input voltage range is proposed in this paper. The combined a traditional LLC and two multi-resonant converters via architecture. Among them, the operates as DC transformer (DCX) at resonant frequency to achieve maximum efficiency. Meanwhile, one of converters, (D2D) part structure, responsible for regulation over range. In addition, other has operation modes, including DCX D2D. When it mode, better performance higher D2D can handle wider For each...
In the past years, human computer interaction (HCI) research and innovation have developed substantially, leading to a number of fruitful topics. this paper, we surveyed HCI in China from 10-year perspective. We analyzed popular methodology topics among Chinese researchers, including modeling, user interface techniques, context awareness, acceptance performance, experience design, human-AI interaction, applications social influences. also conducted bibliography analysis on published papers...
There have been many applications of Hilbert curve such as image processing. This paper presents a new scrambling algorithm based on 3-D curve. extends basic cells and uses them for scrambling. Another sorting method mixed with is discussed to make the more effective.
In this work, we extend the capability of convolutional neural network (CNN) to polar code decoding. Previous work has shown that a multi-layer perceptron (MLP), which is basic form deep (DNN), can achieve high decoding accuracy and speed for when block length very short. However, its performance drops drastically longer codes, due bulky structure. design implement CNN order improve accuracy, introduce auxiliary labels into output based on encoding structure code. addition, propose prune...
In order to improve the contrast and sharpness of traffic sign images obtained under low light natural environment, we propose an improved enhancement method based on discrete wavelet transform image contrast. We convert original RGB HSV color space, use (DWT) decompose luminance component (V). low-frequency multi-scale Retinex algorithm estimate illuminance enhance images, high-frequency enhances detail information through boosting method. Finally, adjust saturation (S) by a piecewise...
Abstract In recent years, wide voltage range DC/DC converters have been widely used in telecom power, solar generation and electric vehicle charger applications. Based on this, a new multi‐resonant converter with input is proposed here. Compared the traditional LLC converter, can maintain output within narrow frequency regulation both under‐resonance over‐resonance areas. Thus, be realized without additional switch components or complex control strategies. The topology corresponding working...
Perceiving the region of interest (ROI) and target object by smartphones from user's first-person perspective can enable diverse spatial interactions. In this paper, we propose a novel ROI input method selecting for utilizing user-perspective phone occlusion. This concept turning into real-world physical cursor benefits proprioception, gets rid constraint camera preview, allows users to rapidly accurately select object. Meanwhile, our provide resizable rotatable rectangular disambiguate...
In recent years, copyright protection becomes more and important in daily life, especially digital products. A new algorithm uses 3D slant transform short video segmentation techniques to embed watermark the coefficient matrix. The experiment results show that proposed method can enhance robustness of original resist common attacks.
Under unbalanced AC microgrid voltage conditions in hybrid microgrids, DC bus will generate double frequency ripple pulsation, which damages the stability. In order to suppress double-frequency a control strategy suitable for CLLLC transformers is proposed this paper. First, an equivalent model established by first harmonic approximation describe fundamental wave of transformers. On basis, its gain characteristics and input impedance can be analyzed. Then, considering feature pulsation...
Aiming at the problem that wide voltage gain of traditional LLC resonant converters is limited, a novel high-efficiency converter proposed. It can maintain output within narrow frequency adjustment range in both under-resonance and over-resonance areas. Thus, it adapts to input applications without complex control strategies. The paper introduces proposed topology its working principle. Also, fundamental wave equivalent mathematical model established, expression deduced corresponding...
This paper proposes an advanced control strategy consisting of current stress optimization based on triple-phase-shifting (TPS) modulation for front-end DAB converter and 33% PWM method back-end three-phase full bridge inverter. Compared with the traditional phase shift control, proposed achieves linear significantly reduces stress. In addition, it DC-Link capacitance, which improves safety equipment. The adopted by inverter at switching loss semiconductor devices. principle, derivation...
The task of target detection is to locate and classify the detected objects in image. Applying it power inspection reduces manpower time consumption, improves efficiency work, great significance ensure reliability system operation. In this paper, Faster R-CNN method applied state cotter pins. And process divided into two parts. first part image preprocessing part, which will expand date set by adding noise, sharpening, shadowing on original date. pins can be marked labeling tool Labelimage....