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浏览/检索结果: 共21条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序作者升序作者降序 Comparison of Three Approaches for Estimating Understory Biomass in Yanshan Mountains 期刊论文  OAI收割 REMOTE SENSING, 2024, 卷号: 16, 期号: 6, 页码: 20 作者:  Li, Yuanqi;  Hu, Ronghai;  Xing, Yuzhen;  Pang, Zhe;  Chen, Zhi   |  收藏  |  浏览/下载：22/0  |  提交时间：2024/05/06 understory AGB estimation  TLS  voxel size  non-voxel-based approach   Spatial Variability of Raindrop Size Distribution at Beijing City Scale and Its Implications for Polarimetric Radar QPE 期刊论文  OAI收割 REMOTE SENSING, 2023, 卷号: 15, 期号: 16, 页码: 19 作者:  Zhang, Zhe;  Li, Huiqi;  Li, Donghuan;  Qi, Youcun   |  收藏  |  浏览/下载：19/0  |  提交时间：2023/10/09 raindrop size distribution (DSD)  polarimetric radar  quantitative precipitation estimation (QPE)   Accurate blind deblurring using salientpatch-based prior for large-size images 期刊论文  OAI收割 MULTIMEDIA TOOLS AND APPLICATIONS, 2018, 卷号: 77, 期号: 21, 页码: 28077-28100 作者:  Ma, Chengcheng;  Zhang, Jiguang;  Xu, Shibiao;  Meng, Weiliang;  Xi, Runping   |  收藏  |  浏览/下载：71/0  |  提交时间：2019/01/08 Deblurring  SalientPatch  Kernel estimation  Segmentation  Large-size   RGB-D视频处理与三维目标跟踪 学位论文  OAI收割 工学博士, 中国科学院自动化研究所: 中国科学院大学, 2014 作者:  刘绍国 收藏  |  浏览/下载：122/0  |  提交时间：2015/09/02 RGB-D视频处理  深度图像复原  模糊核大小估计  图匹配  单应矩阵估计  三维头部姿态估计  RGB-D Video Processing  Blur-Kernel Size Estimation  Graph Matching  Homography Estimation  3D Head Pose Estimatio   Cooling-induced increase of methane cluster size investigated under a Coulomb explosion scheme 期刊论文  OAI收割 chinese optics letters, 2013, 卷号: 11, 期号: s2, 页码: s20201 Song Li (李松); Haiyang Lu (卢海洋); Hui Zhang (张辉); Kazuhisa Nakajima; Jiansheng Liu (刘建胜 ); Guoquan Ni (倪国权) 收藏  |  浏览/下载：33/0  |  提交时间：2013/09/09 methane clusters  Coulomb explosion  size estimation  laser-cluster interaction   Impact of the Spatial Domain Size on the Performance of the T-s-VI Triangle Method in Terrestrial Evapotranspiration Estimation SCI/SSCI论文  OAI收割 2013 作者:  Tian J. 收藏  |  浏览/下载：30/0  |  提交时间：2014/12/24 triangle method  evapotranspiration estimation  spatial domain size  limiting boundaries of T-s-VI space  energy-balance  surface evapotranspiration  soil-moisture  model  flux  disaggregation  temperature  imagery  system  scale   A cumulative damage model for fatigue life estimation of high-strength steels in high-cycle and very-high-cycle fatigue regimes 期刊论文  OAI收割 FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 2012, 卷号: 35, 期号: 7, 页码: 638-647 作者:  Sun CQ(孙成奇);  Xie JJ(谢季佳);  Zhao AG(赵爱国);  Lei ZQ(雷铮强);  Hong YS(洪友士) 收藏  |  浏览/下载：32/0  |  提交时间：2013/01/18 crack growth rate  fatigue damage  fish-eye fracture  high-cycle fatigue  very-high-cycle fatigue  life estimation  Subsurface Crack Initiation  Chromium Bearing Steel  S-N Curve  Gigacycle Fatigue  Part I  Mechanism  Behavior  Failure  Inclusions  Size   Electro-optical imaging system identification using pseudo-random binary pattern (EI CONFERENCE) 会议论文  OAI收割 2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China Le Y.; Jian W.; Jianzhong Z.; Qiang S.; Jianzhuo L. 收藏  |  浏览/下载：30/0  |  提交时间：2013/03/25 A method using pseudo-random binary pattern is developed for electro-optical imaging system identification. The imaging system is taken as a stable  linear  time-invariant  and causal filter  and its transfer function is measured through the pseudo-random binary sequence impulse responses identification. A digital mirror device (DMD) light projector is developed as the target generator  and wavelet thresholding is used to denoise the captured image. Pre-filtering spectral estimation algorithm with adaptive parameter selection is also proposed for the identification process  overcoming the challenge brought by the size limit derived from the optical isoplantic region. Simulations and experiments are presented to show the effectiveness of the proposed method.0-64. 2010 IEEE.   Modulation transfer function measurement of sampled imaging systems in field test (EI CONFERENCE) 会议论文  OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China 作者:  Yang L.;  Zhang J.;  Zhang J.;  Zhang J.;  Wang J. 收藏  |  浏览/下载：36/0  |  提交时间：2013/03/25 A digital mirror device (DMD) based light projector was developed as the target generator in modulation transfer function (MTF) measurement. In order to overcome the sampling-scene phase effect in MTF measurement of sampled imaging systems  a method using random targets is introduced to yield a phase-averaged MTF. The main potential problem of implementing this method is the fact that the stationary assumption of the random targets may be vitiated in practical measurement  especially in field test due to the ill condition. We provide an efficient model-independent way of analyzing and isolating the spectral contents arising from these additional contributions to MTF measurement. Algorithms with adaptive parameter selection were also developed for spectral estimation of the test image in order to overcome the challenge brought by the size limit of the test matrices for one certain field of view derived from the isoplantic region. The MTF measurement of a CCD video imager is used to demonstrate the measurement technique and illustrate the benefits over other methods. In order to validate the results  comparisons have been made between MTF measurements of imager implemented using this method and bar target direct measurements. 2010 Copyright SPIE - The International Society for Optical Engineering.   Modelling a small-size unmanned helicopter using optimal estimation in the frequency domain 期刊论文  OAI收割 Intelligent Systems Technologies and Applications, 2010, 卷号: 8, 期号: 1-4, 页码: 70-85 作者:  Song DL(宋大雷);  Qi JT(齐俊桐);  Dai L(戴磊);  Han JD(韩建达);  Liu GJ(刘光军) 收藏  |  浏览/下载：18/0  |  提交时间：2012/05/29 small-size unmanned helicopter  helicopter model  optimal estimation  hover  frequency domain