Showing 261 - 280 results of 2,834 for search 'low (direction OR detection) algorithm', query time: 0.22s Refine Results
  1. 261

    Dual threshold cooperative spectrum sensing algorithm based on stochastic resonance by Shunlan LIU, Yide XIAO, Jianrong BAO

    Published 2020-12-01
    “…In view of the poor performance of the existing spectrum sensing algorithm in the low signal-noise ratio (SNR) environment and the limitations of traditional stochastic resonance (SR) detection methods for weak signals in practical applications,a dual threshold cooperative spectrum sensing algorithm based on stochastic resonance (DCSSR) by setting the optimal threshold was proposed and the optimal number of cooperative users was calculated.At last,the performance of the proposed algorithm was analyzed.This algorithm further improves the detection performance of the spectrum sensing algorithm under low signal-to-noise ratio by passing the statistical data located in the double-threshold uncertain region through a stochastic resonance system.Simulation results show that the detection performance of DCSSR algorithm is improved compared with traditional single threshold energy cooperation algorithm,double threshold energy cooperation algorithm and single threshold stochastic resonance cooperation algorithm.When the SNR is -20 dB,the proposed DCSSR algorithm improves the detection probability by 80% compared with the traditional single threshold energy detection cooperation algorithm.…”
    Get full text
    Article
  2. 262
  3. 263

    The Detection Optimization of Low-Quality Fake Face Images: Feature Enhancement and Noise Suppression Strategies by Ge Wang, Yue Han, Fangqian Xu, Yuteng Gao, Wenjie Sang

    Published 2025-06-01
    “…To address these limitations, this paper proposes a novel algorithm, YOLOv9-ARC, which is designed to enhance the accuracy of detecting low-quality fake facial images. …”
    Get full text
    Article
  4. 264
  5. 265

    Two-stage object detection in low-light environments using deep learning image enhancement by Ghaith Al-refai, Hisham Elmoaqet, Abdullah Al-Refai, Ahmad Alzu’bi, Tawfik Al-Hadhrami, Abedalrhman Alkhateeb

    Published 2025-04-01
    “…The second stage employs a computer vision algorithm for object detection. Three image enhancement algorithms—ZeroDCE++, Gladnet, and two-branch exposure-fusion network for low-light image enhancement (TBEFN)—were assessed in the first stage to enhance image quality. …”
    Get full text
    Article
  6. 266

    A Low-Cost Antipodal Vivaldi Antenna-Based Peanut Defect Rate Detection System by Yuanyuan Yin, Fangyan Ma, Xiaohong Liu, Shuhao Wang, Junjie Xia, Liqing Zhao

    Published 2025-03-01
    “…Differing from traditional and often expensive or complex detection methods, our approach utilizes a low-cost antipodal Vivaldi antenna, complemented by a custom-designed defect rate detection system. …”
    Get full text
    Article
  7. 267

    A New Background-Based Extraction Algorithm under Factor Space Theory by Yuxin Wang, Xiaoyu Bi

    Published 2023-08-01
    “…Based on the isolated forest algorithm, the background-based anomaly detection algorithm can identify and delete the anomalous points that will interfere with the background base extraction results, and the background-based anomaly detection uses each factor as an attribute to segment the data space, which is suitable for high-dimensional factor space; combined with α-shape, a new background base extraction algorithm, the base point detection algorithm, was proposed, which has low time and space complexity.…”
    Get full text
    Article
  8. 268
  9. 269

    Research Progress of Machine Learning Algorithms Applied in FSO Communication Systems by LIU Hainan, SHAO Yufeng, WANG Anrong, ZHU Yaodong, YANG Linjie, CHEN Chao, LI Wenchen, HU Wenguang

    Published 2025-04-01
    “…In this article, the research progress of applying typical machine learning algorithms in FSO communication systems in signal detection, channel estimation, auxiliary optical compensation, and other aspects are reviewed. …”
    Get full text
    Article
  10. 270

    Accurate detection of low concentrations of microplastics in soils via short-wave infrared hyperspectral imaging by Huan Chen, Taesung Shin, Bosoon Park, Kyoung Ro, Changyoon Jeong, Hwang-Ju Jeon, Pei-Lin Tan

    Published 2025-07-01
    “…Our study highlights the feasibility of the MCT hyperspectral imaging system for rapid and effective detection of microplastics in soils non-invasively at concentrations as low as 0.01%.…”
    Get full text
    Article
  11. 271

    A Low Complexity Subspace-Based DOA Estimation Algorithm with Uniform Linear Array Correlation Matrix Subsampling by Do-Sik Yoo

    Published 2015-01-01
    “…We propose a low complexity subspace-based direction-of-arrival (DOA) estimation algorithm employing a direct signal space construction method (DSPCM) by subsampling the autocorrelation matrix of a uniform linear array (ULA). …”
    Get full text
    Article
  12. 272

    IM/DD-Based 112-Gb/s/lambda PAM-4 Transmission Using 18-Gbps DML by Chao Yang, Rong Hu, Ming Luo, Qi Yang, Cai Li, Haibo Li, Shaohua Yu

    Published 2016-01-01
    “…Single-channel 112-Gb/s PAM-4 transmission based on low-cost intensity modulation and direct detection (IM/DD) optics is experimentally demonstrated over 1-km standard single-mode fiber. …”
    Get full text
    Article
  13. 273

    Optimization of Sorghum Spike Recognition Algorithm and Yield Estimation by Mengyao Han, Jian Gao, Cuiqing Wu, Qingliang Cui, Xiangyang Yuan, Shujin Qiu

    Published 2025-06-01
    “…Image- and video-based yield estimation accuracies reached 89–96% and 75–93%, respectively, with single-frame latency as low as 0.047 s. By optimizing the full detection–tracking–yield pipeline, this solution overcomes challenges in small object missed detections, ID switches under occlusion, and real-time processing in complex scenarios. …”
    Get full text
    Article
  14. 274

    Low complexity decoder over time-selective fading channels by ZHANG Bi-jun, ZHU Guang-xi, SUN Jun, LIU Wen-ming

    Published 2006-01-01
    “…The intra symbol interferences within the all groups were firstly sup-pressed in virtue of the construction of orthogonal matrices and then obtained the all groups’ transmitted symbols based on the group detection technique using the simplified matrix inverse algorithm. …”
    Get full text
    Article
  15. 275
  16. 276

    Artificial intelligence in lung cancer screening: assessment of the diagnostic accuracy of the algorithm analyzing low-dose computed tomography by S. P. Morozov, A. V. Vladzimirskiy, V. A. Gombolevskiy, V. G. Klyashtorny, I. A. Fedulova, L. A. Vlasenkov

    Published 2020-09-01
    “…The diagnostic accuracy of the artificial intelligence algorithm aimed to detect lesions on low-dose computer tomograms has been independently assessed. …”
    Get full text
    Article
  17. 277

    Optimization of computer network security system based on improved neural network algorithm and low energy data search by Miao Zhigang, Cao Ying, Wang Tao

    Published 2025-09-01
    “…Therefore, this paper aims to optimize the computer network security system, and proposes a method based on improved neural network algorithm and low energy consumption data search to improve security and energy efficiency. …”
    Get full text
    Article
  18. 278

    Cross-domain subcortical brain structure segmentation algorithm based on low-rank adaptation fine-tuning SAM by Yuan Sui, Qian Hu, Yujie Zhang

    Published 2025-07-01
    “…Deep learning foundation models trained and designed on large-scale natural scene image datasets experience significant performance degradation when applied to subcortical brain structure segmentation in MRI, limiting their direct applicability in clinical diagnosis. Methods This paper proposes a subcortical brain structure segmentation algorithm based on Low-Rank Adaptation (LoRA) to fine-tune SAM (Segment Anything Model) by freezing SAM’s image encoder and applying LoRA to approximate low-rank matrix updates to the encoder’s training weights, while also fine-tuning SAM’s lightweight prompt encoder and mask decoder. …”
    Get full text
    Article
  19. 279

    Abstract 035: Workflow Improvements from Automated LVO Detection Algorithms Are Dependent on Care Team Engagement by Hussain M Azeem

    Published 2023-11-01
    “…Introduction Automated machine learning (ML)‐based large vessel occlusion (LVO) detection algorithms have been shown to improve in‐hospital workflow metrics including door to groin time (DTG). …”
    Get full text
    Article
  20. 280