搜索结果: 136-150 共查到“知识库 信息科学与系统科学基础学科”相关记录1187条 . 查询时间(2.893 秒)
一种深度图帧内预测模式决策改进算法
多视点视频加深度 帧内预测模式 楔形分割 快速决策
2018/6/11
为减小 3D高效视频编码(threedimensionalhighefficiencyvideocoding,3DHEVC)的编码复杂度,提出一种
深度图帧内预测模式决策改进算法。一方面,采用拉普拉斯边缘检测法对是否遍历深度模型模式(depthmodeling
modes,DMMs)进行快速判决;另一方面,利用预测单元(predictionunit,PU)的楔形分割线与其纹理特征的相关性...
基于最大相关波形延拓改进的EEMD方法
聚合经验模态分解(EEMD) 端点效应 模态混叠 时频分析
2018/6/11
针对经验模态分解(empiricalmodedecomposition,EMD)中出现的端点效应和模态混叠现象问题,提出了利
用最大相关波形延拓改进聚合经验模态分解(ensembleempiricalmodedecomposition,EEMD)方法。利用最大相关
波形法对原始信号的两端进行延拓,实现延拓数据在原信号边界处的平滑过渡,减小端点处包络线的拟合误差。
针对 EEMD中参数无法自动...
基于视差信息的立体图像主动闭合轮廓提取算法研究
闭合轮廓提取 视差信息 贪婪蛇 初始轮廓
2018/5/21
针对立体图像中目标对象的闭合轮廓提取任务,该文提出一种基于视差信息的轮廓提取算法。该算法在传统贪婪蛇模型的基础上,利用各控制点和中心的视差关系为模型设计收缩和膨胀力,能够有效指导初始轮廓曲线向目标边缘的收敛。同时算法采用重复利用经处理的控制点作为模型输入的循环迭代方式,能够获得分布均匀且较为密集的边缘曲线。实验结果表明,该轮廓提取算法减少了传统的贪婪蛇模型算法对初始值的依赖,准确度和可靠性均得到了...
THE SELIMIYE MOSQUE OF EDIRNE, TURKEY – AN IMMERSIVE AND INTERACTIVE VIRTUAL REALITY EXPERIENCE USING HTC VIVE
3D HTC Vive modelling reconstruction virtual reality
2017/6/20
Recent advances in contemporary Virtual Reality (VR) technologies are going to have a significant impact on veryday life. Through VR it is possible to virtually explore a computer-generated environmen...
METRIC SURVEY AND BIM TECHNOLOGIES TO RECORD DECAY CONDITIONS
Metric survey H-BIM 3D decays Data enrichment Integrated workflow TLS
2017/6/20
The paper proposes a method able to describe, classify and organize information assets concerned with Architectural Heritage, through the use of integrated survey procedures, mainly based on Terrestri...
CONSERVATION-ORIENTED HBIM. THE BIMEXPLORER WEB TOOL
Data Standardization Taxonomies Interoperability Ontologies Shared parameters Representation workflow
2017/6/20
The application of (H)BIM within the domain of Architectural Historical Heritage has huge potential that can be even exploited within the restoration domain. The work presents a novel approach to solv...
CONSERVATION PROCESS MODEL (CPM): A TWOFOLD SCIENTIFIC RESEARCH SCOPE IN THE INFORMATION MODELLING FOR CULTURAL HERITAGE
Ontologies cultural heritage conservation BHIM scientific research
2017/6/20
The aim of the present research is to develop an instrument able to adequately support the conservation process by means of a twofold approach, based on both BIM environment and ontology formalisation...
DETECTION AND TRACKING OF MOVING OBJECTS WITH REAL-TIME ONBOARD VISION SYSTEM
Detection Tracking Background estimation Motion object Geometrical transform estimation
2017/6/19
Detection of moving objects in video sequence received from moving video sensor is a one of the most important problem in computer vision. The main purpose of this work is developing set of algorithms...
THE EXTRACTION OF INDOOR BUILDING INFORMATION FROM BIM TO OGC INDOORGML
Building Information Modeling (BIM) Indoor Information IndoorGML Industry Foundation Classes (IFC)
2017/8/10
Indoor Spatial Data Infrastructure (indoor-SDI) is an important SDI for geosptial analysis and location-based services. Building Information Model (BIM) has high degree of details in geometric and sem...
CAN RECONSTRUCTED LAND SURFACE TEMPERATURE DATA FROM SPACE PREDICT A WEST NILE VIRUS OUTBREAK?
West Nile Virus outbreaks Greece Land Surface Temperature MODIS GRASS GIS Time series analysis
2017/8/10
Temperature is one of the main drivers of ecological processes. The availability of temporally and spatially continuous temperature time series is crucial in different research and application fields,...
3维多输入多输出(3D-MIMO)系统能有效提升频谱效率,提高系统容量。但用户数和天线数的剧增,无法保证所有用户的导频都正交,给3D-MIMO信道估计带来估计精度下降和复杂度增加等问题。该文分析了上行3D-MIMO系统信道的结构稀疏特性和低秩特性,并基于这些特性提出一种信道估计算法,给出了算法的收敛性和复杂度。仿真结果表明估计算法能准确地恢复3D-MIMO的信道系数,并有较低的复杂度。
频繁且随机发生的台风,其风险是概率风险,具有统计学的意义.用历史台风的损失记录作为样本来量化风险时,台风风险就是台风损失样本的平均值,它必等于由台风发生概率和易损性偶合估计出的损失期望值.当统计资料较少时,由于信息扩散模型能提高小样本的工作效率,消除用简单统计方法估计风险时出现的平缓和跳空现象,较好地表现统计规律,从而能改进台风风险的估计精度.按年分段形成的多个样本函数可用于计算物理意义明确的台风...
分布式移动农业病虫害图像采集与诊断系统设计与试验
嵌入式相机 Android手机 可伸缩杆 分布式计算
2017/11/15
为了便捷地采集和实时诊断农业病虫害图像,设计了一个分布式移动农业病虫害图像采集与诊断系统。该系统由多个便携式图像采集终端和一个图像处理服务器组成;其中,图像采集终端包括嵌入式相机、可伸缩的手持杆和装载控制App的手机;图像处理服务器包括农业病虫害诊断、信息记录和反馈模块等。手持杆可将安装在其前端的嵌入式相机送到人手或视觉难以企及的病虫害区域,手机可实时预览前端相机的拍摄画面和实现控制相机完成农业病...
基于数据质量控制的葡萄生产信息采集系统设计与应用
系统应用 数据质量 异常值 葡萄生产
2017/11/15
为了克服传统调研的时间周期长、数据质量低等缺点,实现葡萄生产信息远程获取,在采用模型(Model)-视图(View)-控制器(Controller)模式的结构框架和PHP(hypertext preprocessor)语言的基础上开发了浏览器/服务器(Browser/Server)模式的基于数据质量控制的葡萄生产信息采集系统。同时,设计了一套针对数据获取过程的约束规则、异常数据以及空缺数据的质量控...