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Research on deep learning-Driven High-Resolution image Restoration for Murals From the Perspective of Vision Sensing

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IEEE ACCESS 2023年 11卷 71472-71483页

作者： Xiao, Haiying Zheng, Hao Meng, Qiang Henan Univ Fine Arts Coll Kaifeng 475000 Peoples R China Zhengzhou Univ Phys Educ Coll Informat Management Ctr Zhengzhou 450000 Peoples R China

Due to the fact that murals are usually displayed on a large area, it is necessary to develop intelligent algorithms for high-resolution images. In recent years, deep learning has been widely applied in the field of image processing. For the problem of high-resolution image restoration in murals, deep learning technology can also be used to solve it. This article carries out systematic research on deep learning-driven high-resolution image restoration for murals from the perspective of vision sensing. Firstly, principal characteristics of mural paintings such as textures and structures are extracted using conventional vision feature representation. Then, the extracted feature contents are mapped into restorage schemes with the assistance of deep neural network structure, so that digital restoration of mural paintings can be realized. The proposed solution blocks high priority sample blocks, prevents sample blocks with a large number of unknown pixels from being processed, and reduces the continuous accumulation of errors caused by matching errors to achieve digital restoration of murals. The simulation results on real-world image sets show that compared to the baseline method, the recovery accuracy can be improved by more than 20%. This method can restore the main structure and texture details of complex scene images, especially in the case of large-scale information loss.

关键词： image restoration digital restoration high resolution image deep learning

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Application of Soft Computing for Prediction of Peripheral Neuropathy in T2DM-A real-time Data Analysis

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IEEE ACCESS 2025年 13卷 29264-29278页

作者： Sheikh, Mehewish Musheer Balachandra, Mamatha Narendra, V. G. Maiya, Arun G. Manipal Acad Higher Educ Manipal Inst Technol Dept Comp Sci & Engn Manipal 576104 India Manipal Coll Hlth Profess Dept Physiotherapy Manipal 576104 India

Type 2 Diabetes mellitus (T2DM) patients are experiencing diabetic foot problems that heavily burden healthcare systems around the globe. Although there have been challenges with diagnosing and treating these problems using traditional approaches, the advent of machine learning technology signals the beginning of a new age in diabetic foot care, with the promise of improved precision and customized treatment plans. Machine learning is a beneficial tool for extracting essential insights from large, complicated datasets to improve the accuracy of diabetic foot diagnosis and therapeutic planning. This research aims to employ artificial intelligence to build a decision support system that will use clinical and demographic variables to predict the likelihood that individuals with mild, moderate, or severe peripheral neuropathy may develop diabetic foot syndrome in T2DM. real-time processing of clinical information is made possible by a customized stacked ensemble model, which offers immediate peripheral neuropathy risk prediction with low computing latency. The system's capacity to transform raw patients' data into valuable insights in milliseconds supports quick clinical decision-making. Additionally, comparison and testing have been conducted on four deep learning algorithms: ResMLP, LSTM, DNN, and 1D-CNN. The predictions produced by the classifiers have been interpreted using three explainers: LIME, Eli5, and SHAP. Using the mutual information feature selection technique, the final stack reached a maximum accuracy of 99%. The three most significant markers that helped predict the onset of diabetic foot syndrome were area under pressure, vpt right, and vpt left;the encouraging findings point to the possibility of predicting diabetic foot condition with a decision system.

关键词： Foot Diabetes Pressure measurement Skin real-time systems Medical diagnostic imaging Machine learning algorithms Feature extraction Amputation Temperature distribution Artificial intelligence deep learning feature extraction image analysis machine learning prediction methods risk analysis

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In-line imaging and recognition of flip chip fabrication defects by real-time photoacoustic remote sensing system

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PHOTOACOUSTICS 2024年 38卷 100614页

作者： Chen, Jijing Ding, Kaixuan Pi, Yihan Zhang, Shoujun Li, Jiao Tian, Zhen Tianjin Univ Coll Precis Instrument & Optoelect Engn Tianjin 300072 Peoples R China Tianjin Univ Ctr Terahertz Waves Tianjin 300072 Peoples R China Minist Educ Key Lab Optoelect Informat & Technol Tianjin 300072 Peoples R China Tianjin Univ Tianjin Key Lab Biomed Detecting Tech & Instrument Tianjin 300072 Peoples R China Tianjin Univ Georgia Tech Shenzhen Inst GTSI Shen Zhen 518067 Peoples R China

Microscopic defects in flip chips, originating from manufacturing, significantly affect performance and longevity. Post-fabrication sampling methods ensure product functionality but lack in-line defect monitoring to enhance chip yield and lifespan in real-time. This study introduces a photoacoustic remote sensing (PARS) system for inline imaging and defect recognition during flip-chip fabrication. We first propose a real-time PARS imaging method based on continuous acquisition combined with parallel processing image reconstruction to achieve realtime imaging during the scanning of flip-chip samples, reducing reconstruction time from an average of approximately 1134 ms to 38 ms. Subsequently, we propose improved YOLOv7 with space-to-depth block (IYOLOv7-SPD), an enhanced deep learning defect recognition method, for accurate in-line recognition and localization of microscopic defects during the PARS real-time imaging process. The experimental results validate the viability of the proposed system for enhancing the lifespan and yield of flip-chip products in chip manufacturing facilities.

关键词： Photoacoustic In -line monitoring Parallel processing deep learning

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Intelligent representation method of image flatness for cold rolled strip

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Journal of Iron and Steel Research International 2024年第5期31卷 1177-1195页

作者： Yang-huan Xu Dong-cheng Wang Hong-min Liu Bo-wei Duan National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan UniversityQinhuangdao066004HebeiChina National Key Laboratory of Metal Forming Technology and Heavy Equipment China National Heavy Machinery Research Institute Co.Ltd.Xi’an710018ShaanxiChina State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao066004HebeiChina

real flatness images are the bases for flatness detection based on machine vision of cold rolled *** characteristics of a real flatness image are analyzed,and a lightweight strip location detection(SLD)model with deep semantic segmentation networks is *** interference areas in the real flatness image can be eliminated by the SLD model,and valid information can be *** this basis,the concept of image flatness is proposed for the first *** image flatness representation(IFAR)model is established on the basis of an autoencoder with a new *** optimal structure of the bottleneck layer is 16×16×4,and the IFAR model exhibits a good representation ***,interpretability analysis of the representation factors is carried out,and the difference and physical meaning of the representation factors for image flatness with different categories are *** flatness with new defect morphologies(bilateral quarter waves and large middle waves)that are not present in the original dataset are generated by modifying the representation factors of the no wave ***,the SLD and IFAR models are used to detect and represent all the real flatness images on the test *** average processing time for a single image is 11.42 ms,which is suitable for industrial *** research results provide effective methods and ideas for intelligent flatness detection technology based on machine vision.

关键词： Cold rolled strip image flatness Location detection Representation learning Bottleneck layer

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Radar Signal processing and Its Impact on deep learning-Driven Human Activity Recognition

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SENSORS 2025年第3期25卷 724页

作者： Ayaz, Fahad Alhumaily, Basim Hussain, Sajjad Imran, Muhammad Ali Arshad, Kamran Assaleh, Khaled Zoha, Ahmed Univ Glasgow James Watt Sch Engn Glasgow City G12 8QQ England Ajman Univ Coll Engn & Informat Technol Dept Elect & Comp Engn POB 346 Ajman U Arab Emirates Ajman Univ Artificial Intelligence Res Ctr POB 346 Ajman 346 U Arab Emirates

Human activity recognition (HAR) using radar technology is becoming increasingly valuable for applications in areas such as smart security systems, healthcare monitoring, and interactive computing. This study investigates the integration of convolutional neural networks (CNNs) with conventional radar signal processing methods to improve the accuracy and efficiency of HAR. Three distinct, two-dimensional radar processing techniques, specifically range-fast Fourier transform (FFT)-based time-range maps, time-Doppler-based short-time Fourier transform (STFT) maps, and smoothed pseudo-Wigner-Ville distribution (SPWVD) maps, are evaluated in combination with four state-of-the-art CNN architectures: VGG-16, VGG-19, ResNet-50, and MobileNetV2. This study positions radar-generated maps as a form of visual data, bridging radar signal processing and image representation domains while ensuring privacy in sensitive applications. In total, twelve CNN and preprocessing configurations are analyzed, focusing on the trade-offs between preprocessing complexity and recognition accuracy, all of which are essential for real-time applications. Among these results, MobileNetV2, combined with STFT preprocessing, showed an ideal balance, achieving high computational efficiency and an accuracy rate of 96.30%, with a spectrogram generation time of 220 ms and an inference time of 2.57 ms per sample. The comprehensive evaluation underscores the importance of interpretable visual features for resource-constrained environments, expanding the applicability of radar-based HAR systems to domains such as augmented reality, autonomous systems, and edge computing.

关键词： human activity classification radar domain representations deep learning computational cost transfer learning

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Infrared thermal radiation and deep learning algorithms for evaluating the warm-up effect of sports training: Thermal imaging monitoring model☆

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THERMAL SCIENCE AND ENGINEERING PROGRESS 2025年 58卷

作者： Liu, Yumeng Li, Yunlong Liang, Danqing Li, Cheng Wu, Chuanzhong Jiangsu Univ Sci & Technol Coll Phys Educ Zhenjiang 212100 Peoples R China Shanghai Int Studies Univ Xianda Coll Econ & Humanities Shanghai 202162 Peoples R China Natl Univ Phys Educ & Sports Ukraine UA-02000 Kiev Ukraine

Warm-up activity is an important link to prevent sports injury and improve sports performance. The traditional evaluation methods of warm-up effect mainly rely on the experience judgment of coaches and the subjective feelings of athletes, and lack of objective and quantitative evaluation means. The purpose of this study is to develop an evaluation system based on infrared thermal imaging monitoring model, which can monitor and evaluate the warm-up effect of athletes in real time. The basic principle and acquisition process of infrared thermal imaging technology are introduced. The real-time temperature distribution images of athletes during the warm-up process are obtained by using high-precision infrared thermal imager. The data pre-processing steps include image normalization, enhancement and feature extraction, etc., to ensure that the data quality meets the requirements of model training. In the model training stage, the way of supervised learning is used to train and verify the deep learning model by using the labeled thermal imaging data set. Finally, the performance of the model is evaluated by cross-validation and other methods to ensure that it has good generalization ability. The results show the performance of thermal imaging monitoring model in practical application. The experimental results show that the model can accurately identify the athletes who are under-warmed or over-warmed, and give timely adjustment suggestions. The model can also predict the possible muscle fatigue and potential injury risk during the warm-up process, which provides a scientific basis for coaches to make personalized training plans.

关键词： Infrared thermal radiation deep learning algorithm Physical training Evaluation of warm-up effect Thermal imaging monitoring model

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HFD-NET: a real-time deep learning-based visual algorithm with weak feature enhancement for hair follicle detection

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SIGNAL image AND VIDEO processing 2025年第5期19卷 1-15页

作者： Zhang, Liyang Tong, Juntao Chen, Yue Wang, Nian Li, Weiang Chen, Mengxin Tian, Jinghong Key Lab Urban Rail Transit Intelligent Operat & Ma Jinhua 321000 Peoples R China Zhejiang Normal Univ Coll Comp Sci & Technol Jinhua 321000 Peoples R China Zhejiang Normal Univ Coll Engn Jinhua 321000 Peoples R China

Hair follicle detection in complex scalp environments remains challenging due to small target sizes, morphological similarities, and background interference. To address these issues, we propose HFD-NET, a novel real-time detection framework that significantly enhances weak feature representation while maintaining computational efficiency. Unlike existing methods, HFD-NET introduces three key innovations: (1) the CSRFConv module, which dynamically fuses spatial-channel features to suppress background noise and amplify discriminative follicle characteristics;(2) the C3k2_IBC module, optimized for multi-scale small-object detection through inverted bottleneck convolutions;and (3) the ADown module, which minimizes information loss during downsampling by preserving critical edge and texture details. Extensive experiments on the FDU_HairFollicleDataset demonstrate HFD-NET's superiority, achieving a 67.1% mAP@0.5-outperforming YOLO11n by 5.5%-with only a 0.1M parameter increase and negligible computational overhead. HFD-NET also generalizes effectively to public datasets (e.g., 71.6% mAP@0.5 on HFDC), surpassing Faster R-CNN, SSD, and recent YOLO variants in accuracy-efficiency trade-offs. This work bridges the gap between high-precision detection and real-time applicability, offering a practical solution for clinical hair transplantation and scalp health monitoring.

关键词： Hair follicle detection YOLO11 deep learning Feature extraction

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MMG-Based Motion Segmentation and Recognition of Upper Limb Rehabilitation Using the YOLOv5s-SE

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SENSORS 2025年第7期25卷 2257页

作者： Cao, Gangsheng Jia, Shen Wu, Qing Xia, Chunming East China Univ Sci & Technol Sch Mech & Power Engn Shanghai 200237 Peoples R China Shanghai Univ Engn Sci Sch Mech & Automot Engn Shanghai 201620 Peoples R China

Mechanomyography (MMG) is a non-invasive technique for assessing muscle activity by measuring mechanical signals, offering high sensitivity and real-time monitoring capabilities, and it has many applications in rehabilitation training. Traditional MMG-based motion recognition relies on feature extraction and classifier training, which require segmenting continuous actions, leading to challenges in real-time performance and segmentation accuracy. Therefore, this paper proposes an innovative method for the real-time segmentation and classification of upper limb rehabilitation actions based on the You Only Look Once (YOLO) algorithm, integrating the Squeeze-and-Excitation (SE) attention mechanism to enhance the model's performance. In this paper, the collected MMG signals were transformed into one-dimensional time-series images. After image processing, the training set and test set were divided for the training and testing of the YOLOv5s-SE model. The results demonstrated that the proposed model effectively segmented isolated and continuous MMG motions while simultaneously performing real-time motion category prediction and outputting results. In segmentation tasks, the base YOLOv5s model achieved 97.9% precision and 98.0% recall, while the improved YOLOv5s-SE model increased precision to 98.7% (+0.8%) and recall to 98.3% (+0.3%). Additionally, the model demonstrated exceptional accuracy in predicting motion categories, achieving an accuracy of 98.9%. This method realizes the automatic segmentation of time-domain motions, avoids the limitations of manual parameter adjustment in traditional methods, and simultaneously enhances the real-time performance of MMG motion recognition through image processing, providing an effective solution for motion analysis in wearable devices.

关键词： mechanomyography upper limb motion segmentation pattern recognition target detection YOLOv5s-SE deep learning

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Unsupervised Low-Light image Enhancement Based on Explicit Denoising and Knowledge Distillation

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Computers, Materials & Continua 2025年第2期82卷 2537-2554页

作者： Wenkai Zhang Hao Zhang Xianming Liu Xiaoyu Guo Xinzhe Wang Shuiwang Li College of Computer Science and Engineering Guilin University of TechnologyGuilin541006China Guangxi Key Laboratory of Embedded Technology and Intelligent System Guilin University of TechnologyGuilin541004China

Under low-illumination conditions, the quality of image signals deteriorates significantly, typically characterized by a peak signal-to-noise ratio (PSNR) below 10 dB, which severely limits the usability of the images. Supervised methods, which utilize paired high-low light images as training sets, can enhance the PSNR to around 20 dB, significantly improving image quality. However, such data is challenging to obtain. In recent years, unsupervised low-light image enhancement (LIE) methods based on the Retinex framework have been proposed, but they generally lag behind supervised methods by 5–10 dB in performance. In this paper, we introduce the Denoising-Distilled Retine (DDR) method, an unsupervised approach that integrates denoising priors into a Retinex-based training framework. By explicitly incorporating denoising, the DDR method effectively addresses the challenges of noise and artifacts in low-light images, thereby enhancing the performance of the Retinex framework. The model achieved a PSNR of 19.82 dB on the LOL dataset, which is comparable to the performance of supervised methods. Furthermore, by applying knowledge distillation, the DDR method optimizes the model for real-time processing of low-light images, achieving a processing speed of 199.7 fps without incurring additional computational costs. While the DDR method has demonstrated superior performance in terms of image quality and processing speed, there is still room for improvement in terms of robustness across different color spaces and under highly resource-constrained conditions. Future research will focus on enhancing the model’s generalizability and adaptability to address these challenges. Our rigorous testing on public datasets further substantiates the DDR method’s state-of-the-art performance in both image quality and processing speed.

关键词： deep learning low-light image enhancement real-time processing knowledge distillation

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TFMNet: Trimap-free real-time image Matting Algorithm Based On deep learning

JOURNAL OF APPLIED SCIENCE AND ENGINEERING

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JOURNAL OF APPLIED SCIENCE AND ENGINEERING 2024年第4期27卷 2307-2318页

作者： Peng, Ge Yang, Jingzong Baoshan Univ Sch Big Data Baoshan 678000 Yunnan Peoples R China

The conventional image matting algorithms needed priori manual Trimap information to produce excellent matting results which made real time matting impossible. To tackle the problem, a Trimap-free image matting network, TFMNet, is proposed in this paper. The proposed network consists of four modules, ConvNeXt backbone module for image features extraction, Trimap prediction module for normalized Trimap generation, glance matting module for rough matting results prediction, and post-processing module for exact matting results production. To further optimize the training process of the proposed model, an improved Loss function based on frequency domain information is proposed. In experiment, Sets of Experiments designed by variable controlling approach prove that the proposed TFMNet do well in real time image matting. The TFMNet model achieves 8.99, 0.011, 12.31, 11.15 in the accuracy metrics of SAD, MSE, GRAD, CONN, respectively, costs 51ms for one image averagely which meet the real-time requirements, and model size is 671M. Besides, further experiments conducted by comparing with five state-of-the-art models based on three typical matting databases demonstrate the superiority of the proposed algorithm.

关键词： real-time image matting image semantic segmentation convolution neural network without pooling image processing

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