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面向监控视频的人车分类技术的选择
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作者 冷霞 《计算机光盘软件与应用》 2014年第5期154-154,156,共2页
随着图像识别技术的发展,人车分类已经成为一个重要的研究课题。它能够有效地提高对敏感区域的监控效率,同时良好地进行人车分类,能够有效帮助后期的行为理解。本文将就一个人车分类系统中的人车分类技术进行较为全面的阐述,提出了串联... 随着图像识别技术的发展,人车分类已经成为一个重要的研究课题。它能够有效地提高对敏感区域的监控效率,同时良好地进行人车分类,能够有效帮助后期的行为理解。本文将就一个人车分类系统中的人车分类技术进行较为全面的阐述,提出了串联分类器,根据运动检测出来的二值图中的区域、离散度、面积比以及类似于HOG的梯度计算方法等信息来建立特征,使用神经网络分类器进行分类,当分类结果自信度低于一定门限时,根据运动检测出来的二值图的位置信息以及图像信息,使用HOG进行建立特征,并利用SVM分类器进行人车分类。 展开更多
关键词 人车分类 神经网络
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一种多路海量视频流数据并行化处理方法研究 被引量:1
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作者 陈文竹 陈岳林 +1 位作者 蔡晓东 王迪 《电视技术》 北大核心 2015年第19期113-116,共4页
针对视频监控系统中传统的处理方法计算机资源能力不足,无法满足海量高效的视频流数据内容分析的问题,引入Storm并行计算平台,提出了一种弹性的基于多路视频流的并行化处理方法,并通过一种高效的内存共享机制,集成人车分类算法到分布式... 针对视频监控系统中传统的处理方法计算机资源能力不足,无法满足海量高效的视频流数据内容分析的问题,引入Storm并行计算平台,提出了一种弹性的基于多路视频流的并行化处理方法,并通过一种高效的内存共享机制,集成人车分类算法到分布式处理平台,使算法与高性能并行计算资源有效融合。通过对比实验表明,该并行化处理方案高效稳定,集群运行良好,负载均衡,能满足大规模视频流数据处理的需要。 展开更多
关键词 视频流 STORM 内存共享 人车分类 并行计算
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Application of CAE technology for Geely car lightweight 被引量:2
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作者 Men Yongxin Ma Fangwu +1 位作者 Peng Hong Li Yongsheng 《Engineering Sciences》 EI 2012年第6期23-31,共9页
In order to reduce energy consumption and protect the human survival environment, the lightweight has became the development trend of the world automobile industry. On the premise of ensuring the strength, safety and ... In order to reduce energy consumption and protect the human survival environment, the lightweight has became the development trend of the world automobile industry. On the premise of ensuring the strength, safety and driving performance of the car, the major car enterprises try to reduce the curb weight of the ear, fuel consumption and emissions. Not only a lot of new technologies and new products have been generated, but also joint vehicle development process and computer aided engineering (CAE) analysis technology have been developed. Since the entry into the "Au- tomobile Lightweight Technology Innovation Strategic Alliance" in Dec. 2007, Geely Group has been focusing on light- weight construction of vehicle and key assemblies in every stage of the vehicle product development. Among vehicles ap- peared on the market and in research, it has presented continuously better performance. The paper describes application examples and successful experience of CAE simulation analysis and performance optimization during the lightweight de- sign and development of a self-developed model of Geely, and looks forward to the prospects for the development of lightweight of Geely vehicle. 展开更多
关键词 CAE LIGHTWEIGHT structural optimization pedestrian protection HYDROFORMING high strength steel dent resistance STIFFNESS
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Comparative systems biology between human and animal models based on next-generation sequencing methods
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作者 Yu-Qi ZHAO Gong-Hua LI Jing-Fei HUANG 《Zoological Research》 CAS CSCD 北大核心 2013年第2期J0001-J0007,共7页
Animal models provide myriad benefits to both experimental and clinical research. Unfortunately, in many situations, they fall short of expected results or provide contradictory results. In part, this can be the resul... Animal models provide myriad benefits to both experimental and clinical research. Unfortunately, in many situations, they fall short of expected results or provide contradictory results. In part, this can be the result of traditional molecular biological approaches that are relatively inefficient in elucidating underlying molecular mechanism. To improve the efficacy of animal models, a technological breakthrough is required. The growing availability and application of the high-throughput methods make systematic comparisons between human and animal models easier to perform. In the present study, we introduce the concept of the comparative systems biology, which we define as "comparisons of biological systems in different states or species used to achieve an integrated understanding of life forms with all their characteristic complexity of interactions at multiple levels". Furthermore, we discuss the applications of RNA-seq and ChIP-seq technologies to comparative systems biology between human and animal models and assess the potential applications for this approach in the future studies. 展开更多
关键词 Animal models Comparative systems biology Next-generation sequencing RNA-SEQ ChlP-seq
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