Yangjie Wei
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View article: Multi-objective Integration and Optimization Research on Urban Waste Sorting and Transportation
Multi-objective Integration and Optimization Research on Urban Waste Sorting and Transportation Open
This paper focuses on the challenges of urban waste sorting and transportation scheduling, establishing a mathematical modelling and optimisation framework that integrates vehicle path planning, multi-vehicle collaborative scheduling, and …
View article: Beyond Neutrality: Revisiting Interpreters’ Mediation Through the Lens of Cognitive Discourse Studies and Hatim and Mason’s Intertextuality
Beyond Neutrality: Revisiting Interpreters’ Mediation Through the Lens of Cognitive Discourse Studies and Hatim and Mason’s Intertextuality Open
Integrating the proximization theory in cognitive approach of critical discourse study with Hatim and Mason’s concept of intertextuality, this study offers a new perspective on investigating interpreters’mediation role in diplomatic interp…
View article: Adaptive Generation Method for Small Volume Easy Fabrication Freeform Unobscured Three-Mirror Systems Based on Machine Learning
Adaptive Generation Method for Small Volume Easy Fabrication Freeform Unobscured Three-Mirror Systems Based on Machine Learning Open
Freeform unobscured multiple-mirror systems have been widely applied in high-precision optical fields due to their high imaging quality and no chromatic aberration and central obstruction. However, how to design a freeform unobscured multi…
View article: Improved Few‐Shot Object Detection Method Based on Faster R‐CNN
Improved Few‐Shot Object Detection Method Based on Faster R‐CNN Open
Uneven distribution of object features and insufficient feature learning significantly affect the accuracy and generalizability of existing detection methods. This paper proposes an improved two‐stage few‐shot object detection method that …
View article: Multi-Level Speaker Representation for Target Speaker Extraction
Multi-Level Speaker Representation for Target Speaker Extraction Open
Target speaker extraction (TSE) relies on a reference cue of the target to extract the target speech from a speech mixture. While a speaker embedding is commonly used as the reference cue, such embedding pre-trained with a large number of …
View article: Adaptive design of long-focal-length freeform off-axis reflective space cameras with lightweight and integration of primary/tertiary mirror
Adaptive design of long-focal-length freeform off-axis reflective space cameras with lightweight and integration of primary/tertiary mirror Open
With advancements in freeform surface design and manufacturing, applying freeform surfaces to space cameras is an effective method to further enhance imaging quality. However, existing design methods for freeform space cameras rarely consi…
View article: Image restoration model for microscopic defocused images based on blurring kernel guidance
Image restoration model for microscopic defocused images based on blurring kernel guidance Open
Defocus blurring imaging seriously affects the observation accuracy and application range of optical microscopes, and the blurring kernel function is a key parameter for high-resolution image restoration. However, its solving process is co…
View article: Evaluating the resolution of conventional optical microscopes through point spread function measurement
Evaluating the resolution of conventional optical microscopes through point spread function measurement Open
View article: Three-dimensional modelling of blur property for conventional optical microscopes
Three-dimensional modelling of blur property for conventional optical microscopes Open
Intensity diffusion caused by optical diffraction limits the imaging resolution of conventional optical microscopes, therefore modelling and measuring the intensity transmission and distribution property of the light sources is a significa…
View article: A Robust and Low Computational Cost Pitch Estimation Method
A Robust and Low Computational Cost Pitch Estimation Method Open
Pitch estimation is widely used in speech and audio signal processing. However, the current methods of modeling harmonic structure used for pitch estimation cannot always match the harmonic distribution of actual signals. Due to the struct…
View article: An Improvement to Conformer-Based Model for High-Accuracy Speech Feature Extraction and Learning
An Improvement to Conformer-Based Model for High-Accuracy Speech Feature Extraction and Learning Open
Owing to the loss of effective information and incomplete feature extraction caused by the convolution and pooling operations in a convolution subsampling network, the accuracy and speed of current speech processing architectures based on …
View article: Automatic Speech Recognition Performance Improvement for Mandarin Based on Optimizing Gain Control Strategy
Automatic Speech Recognition Performance Improvement for Mandarin Based on Optimizing Gain Control Strategy Open
Automatic speech recognition (ASR) is an essential technique of human–computer interactions; gain control is a commonly used operation in ASR. However, inappropriate gain control strategies can lead to an increase in the word error rate (W…
View article: Blurring kernel extraction and super-resolution image reconstruction based on style generative adersarial networks
Blurring kernel extraction and super-resolution image reconstruction based on style generative adersarial networks Open
The point spread function (PSF) is the main index used to evaluate the imaging resolution and further improve the quality of an optical image. Its measurement is significant for system development and pattern recognition. However, the prec…
View article: Exploring conventional enhancement and separation methods for multi‐speech enhancement in indoor environments
Exploring conventional enhancement and separation methods for multi‐speech enhancement in indoor environments Open
Speech enhancement is an important preprocessing step in a wide diversity of practical fields related to speech signals, and many signal‐processing methods have already been proposed for speech enhancement. However, the lack of a comprehen…
View article: An Audio Distortion Dynamic Range Index for Evaluating the Performance of Audio Systems
An Audio Distortion Dynamic Range Index for Evaluating the Performance of Audio Systems Open
The dynamic range (DR) index lacking of an official definition leads to ambiguities in performance evaluation. The existing measurement methods of DR do not always match with the various actual application conditions, and some detailed dis…
View article: Adaptive Speech Separation Based on Beamforming and Frequency Domain-Independent Component Analysis
Adaptive Speech Separation Based on Beamforming and Frequency Domain-Independent Component Analysis Open
Voice signals acquired by a microphone array often include considerable noise and mutual interference, seriously degrading the accuracy and speed of speech separation. Traditional beamforming is simple to implement, but its source interfer…
View article: Adaptive Speaker Recognition Based on Hidden Markov Model Parameter Optimization
Adaptive Speaker Recognition Based on Hidden Markov Model Parameter Optimization Open
The Hidden Markov Model (HMM) is a widely used method for speaker recognition. During its training, the composite order of the measurement probability matrix and the number of re-evaluations of the initial model affect the speed and accura…
View article: FPGA-Based Implementation of Stochastic Configuration Network for Robotic Grasping Recognition
FPGA-Based Implementation of Stochastic Configuration Network for Robotic Grasping Recognition Open
Precise and rapid grasping recognition based on machine vision is one of the challenging problems for intelligent robots. As a nonlinear network for recognition, the stochastic configuration network (SCN) is considered as a promising metho…
View article: Predictors Of Postoperative Lower Urinary Tract Symptoms Improvements In Patient With Small-Volume Prostate And Bladder Outlet Obstruction
Predictors Of Postoperative Lower Urinary Tract Symptoms Improvements In Patient With Small-Volume Prostate And Bladder Outlet Obstruction Open
Xiao-Dong Li,* Yu-Peng Wu,* Zhi-Bin Ke,* Ting-Ting Lin,* Shao-Hao Chen, Xue-Yi Xue, Ning Xu, Yong Wei Departments of Urology, The First Affiliated Hospital of Fujian Medical University, Fuzhou 350005, People’s Republic of China*These autho…
View article: Shadow verification–based waterline detection for unmanned surface vehicles deployed in complicated natural environment
Shadow verification–based waterline detection for unmanned surface vehicles deployed in complicated natural environment Open
Boundary separation of operational regions would be helpful for unmanned surface vehicles deployed in dynamic outdoor environments. However, the feasibility and accuracy of current obstacle avoidance methods based on conventional optical i…
View article: Distance Calculation from Single Optical Image
Distance Calculation from Single Optical Image Open
Accurate and fast distance calculation with respect to a single optical image is useful for real-time 3D construction and acquisition, however currently rare distance calculation methods theoretically base on an optical single image, and t…
View article: Automatic waterline detection for USV with complicated shadow background
Automatic waterline detection for USV with complicated shadow background Open
Accurate boundary separation of water regions is a key technique of navigation and obstacle-avoidance for unmanned surface vehicles (USVs) system moving on water. However, in current obstacle-avoidance methods based on optical images with …
View article: Effective Waterline Detection of Unmanned Surface Vehicles Based on Optical Images
Effective Waterline Detection of Unmanned Surface Vehicles Based on Optical Images Open
Real-time and accurate detection of the sailing or water area will help realize unmanned surface vehicle (USV) systems. Although there are some methods for using optical images in USV-oriented environmental modeling, both the robustness an…
View article: Shape Reconstruction Based on a New Blurring Model at the Micro/Nanometer Scale
Shape Reconstruction Based on a New Blurring Model at the Micro/Nanometer Scale Open
Real-time observation of three-dimensional (3D) information has great significance in nanotechnology. However, normal nanometer scale observation techniques, including transmission electron microscopy (TEM), and scanning probe microscopy (…
View article: Diffusion-based three-dimensional reconstruction of complex surface using monocular vision
Diffusion-based three-dimensional reconstruction of complex surface using monocular vision Open
Three-dimensional (3D) reconstruction based on optical diffusion has certain significant advantages, such as its capacity for high-precision depth estimation with a small lens, distant-object depth estimation, a monocular vision basis, and…