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Blind spot Obstacle Detection from Monocular Camera Images with Depth Cues Extracted by CNN

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Automotive Innovation 2018年第4期1卷 362-373页

作者： Yuxiang Guo Itsuo kumazawa Chuyo Kaku Department of Information and Communication Engineering Tokyo Institute of TechnologyTokyo 152-8550Japan Research and Development Center LBN Corporation Ltd.Shanghai 200233China

The images from a monocular camera can be processed to detect depth information regarding obstacles in the blind spot area captured by the side-view camera of a *** depth information is given as a classification result“near”or“far”when two blocks in the image are compared with respect to their distances and the depth information can be used for the purpose of blind spot area *** this paper,the proposed depth information is inferred from a combination of blur cues and texture *** depth information is estimated by comparing the features of two image blocks selected within a single image.A preliminary experiment demonstrates that a convolutional neural network(CNN)model trained by deep learning with a set of relatively ideal images achieves good *** same CNN model is applied to distinguish near and far obstacles according to a specified threshold in the vehicle blind spot area,and the promising results are *** proposed method uses a standard blind spot camera and can improve safety without other additional sensing ***,the proposed approach has the potential to be applied in vehicular applications for the detection of objects in the driver’s blind spot.

关键词： Coarse-to-fine analysis Convolutional neural network Blind spot detection Principal component analysis Discrete cosine transformation

Design of High Power DC Break For ICRH Of EAsT

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Plasma science and Technology 2005年第2期7卷 2727-2730页

作者：李国超赵燕平毛玉周丁家义薛迪冶秦成明 T.Watari R.kumazawa Institute of Plasma Physics Chinese Academy of sciences Hefei 230031China National Institute for Fusion science Furo-cho Nagoya 464-01 Japan

1.5MW Ion Cyclotron Wave Heating system was developed, the transmitter and the antenna both have their ground loops, which will severely perturb the system’s normal operation. To avoid perturbation, a DC break was designed. The s parameter and the VsWR (voltage standing wave ratio) of incident port were calculated; the thermal effect caused by conductor loss and dielectric loss was analyzed.

关键词： DC break ion cyclotron wave heating (ICRH) coaxial line loss

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ICRF Heated Long-Pulse Plasma Discharges in LHD

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Plasma science and Technology 2006年第1期8卷 28-32页

作者： R. kumazawa T. sEKI T. MUTOH K. sAITO T. WATARI Y. NAKAMURA M. sAKAMOTO T. WATANABE s. KUBO T. sHIMOZUMA Y. YOsHIMURA H. IGAMI Y. TAKEIRI Y. OKA K. TsUMORI M. OsAKABE K. IKEDA K. NAGAOKA O. KANEKO J. MIYAZAWA s. MORITA K. NARIHARA M. sHOJI s. MAsUZAKI M. GOTO T. MORIsAKI B. J. PETERsON K. sATO T. TOKUZAWA N. AsHIKAWA K. NIsHIMURA H. FUNABA H. CHIKARAIsHI T. NOTAKE Y. TORII H. OKADA M. ICHIMURA H. HIGAKI Y. TAKAsE H. KAsAHARA F. sHIMPO G.NOMURA C.TAKAHAsHI M.YOKOTA A. KATO 赵燕平 J. s. YOON J. G. KWAK H. YAMADA K. KAWAHATA N. OHYABU K. IDA Y. NAGAYAMA N. NODA A. KOMORI s. sUDO O. MOTOJIMA National Institute for Fusion science Toki Japan Kyusyu University Kasuga Japan Nagoya University Faculty of Engineering Nagoya Japan Kyoto University Institute of Advanced Energy Uji Japan Tsukuba University Plasma Research Center Tsukuba Japan Tokyo University Graduate School of Frontier Sciences Tokyo Japan Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China KAERI 150 Deogjin-dong Yuseong-gu Daejeon Korea Rep.

A long-pulse plasma discharge for more than 30 *** achieved on the LargeHelical Device(LHD).A plasma of n_e=0.8×10^(19)m^(-3)and T_(iO)=2.0 keV was sustained withP_(ICH)=0.52 MW,P_(ECH)=0.1 MW and averaged P_(NBI)=0.067 *** injected heatingenergy was 1.3 GJ,which was a quarter of the prepared RF heating *** of the keys to thesuccess of the experiment was a dispersion of the local plasma heat load to divertors,accomplishedby shifting the magnetic axis inward and outward.

关键词：长脉冲等离子体放电 LHD ICRF加热螺旋/仿星器构造稳定态操作

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网目尺寸对金枪鱼围网沉降性能及网具形态的影响

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水产学报 2019年第6期43卷 1527-1538页

作者：刘伟许柳雄唐浩胡夫祥周成熊沢泰生平山完上海海洋大学海洋科学学院上海海洋大学国家远洋渔业工程技术研究中心同济大学海洋与地球科学学院东京海洋大学学术研究院中国海洋大学水产学院

根据以往的研究结果和海上网具性能实测,并在听取生产第一线船长意见的基础上,把上海开创远洋渔业有限公司现行金枪鱼围网主网衣下部约三分之一网衣的网目尺寸放大50%,即从260 mm增大到390 mm,以探讨改进围网渔具的沉降性能。实验应用... 详细信息

根据以往的研究结果和海上网具性能实测,并在听取生产第一线船长意见的基础上,把上海开创远洋渔业有限公司现行金枪鱼围网主网衣下部约三分之一网衣的网目尺寸放大50%,即从260 mm增大到390 mm,以探讨改进围网渔具的沉降性能。实验应用田内准则换算并制作成模型网,在日本下关西日本日网公司专业围网动水槽进行模型试验,比较了侧流、背流、顺流(流速8 cm/s,相当实物网0.20 m/s)3种相对流向的放网模式下放网以及无流(0 cm/s)海况下放网,网目尺寸改变前后围网的沉降性能、网具形态和闭合效果。结果显示,主网衣下部网目尺寸从30 mm (对照网,相当于实物网网目尺寸260 mm)放大到45 mm (试验网,相当于实物网网目尺寸390 mm),网具的沉降深度和沉降速度分别提高1.6%和1.1%;试验网的收绞时间比对照网缩短14.3%,且能保持较好的形态;有流时的3种放网模式下,试验网和对照网浮子纲在放网结束时刻的初始包围面积基本相同;在收绞结束时,试验网浮子纲包围面积为对照网的1.33倍,绞纲结束前6 s,试验网沉子纲包围面积为对照网的1.79倍,说明增大网目尺寸有利于网具包围面积的增大,改善了被围鱼群的活动空间。

关键词：金枪鱼围网网目尺寸模型试验网具形态沉降性能