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- Data of SWEM include spatial data and table data. 水土保持监测数据根据数据格式划分,可分为空间数据和表格数据。
- This paper describes a method to extract multi scale textural information from satellite SAR image using wavelet transformation. Then data fusion between satellite SAR image and TM image is implemented based on the wavelet texture information. 论述利用小波变换提取合成孔径雷达 (SAR)图像的多尺度纹理信息 ,基于小波纹理信息将SAR图像与TM图像进行融合。
- Finally,unifies the spatial analysis method,and through the spatial data mining it discusses and inverts the sediment change rules of the strata in time scale. 最后,通过空间数据挖掘并结合空间分析的方法探讨和反演了地层在时间尺度上的沉积变化规律。
- Using multi scale DEM datum, multi scale topographic index are extracted and mapped in the whole country and sample area in bess plateau, which prepare topographic datum basis for developing regional soil and water loss assessment model. (2)利用多尺度的DEM数据,提取了多尺度的水土流失地形指标,编制了全国及黄土高原典型样区的水土流失地形指标专题图件,为多尺度区域水土流失评价模型的建立准备了地形数据基础。
- By applying wavelet analysis method to image edge detection,multi scale operator of wavelet analysis functions well for noise resisting ability and picture edge reserving. 将小波分析方法应用于图像边缘检测领域,小波分析的多尺度算子在抗噪声和保留图像边缘的能力上有比较好的效果。
- The system can accomplish figure data management, attribute data management and spatial data analysis. 该系统是一个集图形数据管理、属性数据管理和空间数据分析为一体的管理信息系统。
- A GIS is often used to store, retrieve, and render this Earth-relative spatial data. GIS系统通常用于存储,查询,及绘制空间信息。
- Spatio-temporal DBMS (database management system) is a DBMS which can handle the temporal data and the spatial data. 时空数据库管理系统(Spatio-Temporal DBMS)是能够同时处理时态数据和空间数据的数据库管理系统。
- The conception of multi-scale Hilbert spectrum entropy(MSHSE)was proposed based on the multi scale analysis character of the local wave method(LWM)and its calculation method was developed. 基于局域波分析的时频多分辨特性,提出了多尺度Hilbert谱熵的概念,并给出了多尺度Hilbert谱熵的计算方法。
- The abstract data model(ADT) of spatial data,vector and raster,is defined firstly based on basic types. 首先基于基本类型派生定义矢量和栅格抽象数据类型,在此基础上定义时空数据类型为一系列空间类型的时间片序列。
- The City Air Pollution Numerical Prediction System (CAPPS) consists of MM5 (or MM4) and the multi scale grid box model based on the integral of the atmospheric advective dispersion equation. 城市空气污染数值预报系统CAPPS ,是在ADPIC的概念的基础上经过积分求得的大气平流扩散的多尺度箱格预报模型。
- Abstract:Spatial data quality is the basis of cadastral data's updating, query and analysis. 摘要:地籍空间数据质量是地籍数据更新、信息查询与分析的基础。
- Lossless compression bounds of images naturally acquired by various imaging sensors are estimated using a practical method based on multi scale conditional entropy and memory measurement. 为估计利用各类成像传感器自然获取图像的无损压缩极限,提出一个利用多尺度条件熵和记忆性度量的实用方法。
- GIS software has strong treatment ability of spatial data and the attribute data. 摘要GIS具有强大的空间数据和属性数据的处理能力。
- The GML-based spatial data exchange model and SVG-based information visual model are proposed. 提出了基于GML空间数据交换和基于SVG的信息可视化模型。
- In Macao, a spatial data set is maintained by DSCC for the desktop application of GIS and web-GIS. 在澳门,DSCC 为GIS 和网GIS的桌面应用程序保持空间数据集合。
- A hybrid 3D spatial data model based on multi-DEMs and quasi tri-prism volume(QTPV) is proposed. 提出一种基于多层DEM与似三棱柱体元(QTPV)的混合三维数据模型。
- Discusses reseaches about representation of spatial data in the tactical information fusion system. 讨论了战术信息融合系统中空间数据的表示方法。
- The amount of spatial data is huge, resulting in the variety and greatness of GML. 空间数据是极其庞大的,因而导致GML数据类型繁多,数量巨大。
- wavelet multi scale envelope spectrum 小波多尺度包络谱