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Oriented Bounding Box Object Detection Model Based on Improved YOLOv8 被引量:1
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作者 ZHAO Xin-kang SI Zhan-jun 《印刷与数字媒体技术研究》 CAS 北大核心 2024年第4期67-75,114,共10页
In the study of oriented bounding boxes(OBB)object detection in high-resolution remote sensing images,the problem of missed and wrong detection of small targets occurs because the targets are too small and have differ... In the study of oriented bounding boxes(OBB)object detection in high-resolution remote sensing images,the problem of missed and wrong detection of small targets occurs because the targets are too small and have different orientations.Existing OBB object detection for remote sensing images,although making good progress,mainly focuses on directional modeling,while less consideration is given to the size of the object as well as the problem of missed detection.In this study,a method based on improved YOLOv8 was proposed for detecting oriented objects in remote sensing images,which can improve the detection precision of oriented objects in remote sensing images.Firstly,the ResCBAMG module was innovatively designed,which could better extract channel and spatial correlation information.Secondly,the innovative top-down feature fusion layer network structure was proposed in conjunction with the Efficient Channel Attention(ECA)attention module,which helped to capture inter-local cross-channel interaction information appropriately.Finally,we introduced an innovative ResCBAMG module between the different C2f modules and detection heads of the bottom-up feature fusion layer.This innovative structure helped the model to better focus on the target area.The precision and robustness of oriented target detection were also improved.Experimental results on the DOTA-v1.5 dataset showed that the detection Precision,mAP@0.5,and mAP@0.5:0.95 metrics of the improved model are better compared to the original model.This improvement is effective in detecting small targets and complex scenes. 展开更多
关键词 Remote sensing image Oriented bounding boxes object detection Small target detection YOLOv8
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一种基于线网划分的并行FPGA布线算法 被引量:1
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作者 朱春 来金梅 《计算机工程》 CAS CSCD 2014年第3期287-293,共7页
针对在现场可编程门阵列(FPGA)软件系统中大规模电路设计布线时间较长的问题,提出一种基于线网引脚位置划分且具有平台独立性的多线程FPGA布线算法。对高扇出线网采用将单根线网拆分成子线网并同时布线的方法,对低扇出线网采用选择若干... 针对在现场可编程门阵列(FPGA)软件系统中大规模电路设计布线时间较长的问题,提出一种基于线网引脚位置划分且具有平台独立性的多线程FPGA布线算法。对高扇出线网采用将单根线网拆分成子线网并同时布线的方法,对低扇出线网采用选择若干位置不相交叠的线网进行同时布线的方法,给出线网边界框图的数据结构来缩短选择若干低扇出线网的时间,采取负载平衡机制和同步措施,分别提高布线效率和保证布线结果的确定性。实验结果证明,在Intel 4核处理器平台上,与单线程VPR算法相比,该并行算法的平均布线效率提高了90%,平均布线质量下降不超过2.3%,并能够得到确定的布线结果,在EDA方面具有重要的理论与实用价值。 展开更多
关键词 现场可编程门阵列 多线程 布线 高扇出线网 低扇出线网 边界框图 确定性
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