查询词典 raster

GDAL datasets have two ways of describing the relationship between raster positions (in pixel/line coordinates) and georeferenced coordinates. The first, and most commonly used is the affine transform.

GDAL dataset有两种方式去描述栅格位置和地理坐标的关系：第一种，也是最常用的一种是用仿射变换，另一种是GCPS地面控制点

After analyzing characteristics of urban spatial data, this paper partly implements the integration of spatial data of multi sources and organization and management of sea-large spatial data. Finally, the spatial data managing system makes a uniform management, maintenance and updating on such data as digital linear graphic, digital elevation map, digital orthoimage, digital raster data, reference points and metadata.

本文针对城市空间数据特征分析，部分实现了多源空间数据的集成和海量空间数据的组织与管理，实现了多库一体化分布式城市空间数据管理系统，将数字矢量线划数据、数字正射影像数据、数字高程模型数据、数字栅格数据、控制点数据以及元数据的进行统一的管理、维护和更新。

Based on survey of existing methods, in this dissertation: aimed to the reliability of stereo image matching in digital photogrammetric, a new matching strategy utilized local continuity constraints encoded by triangulation of the well-defined points is proposed; concerned with the inherent efficient, accuracy and size constraint problems of existing topographic structure extraction approach, an efficient, accurate and large scale data adapted approach based on the combination of vector and raster processes are proposed.

在对国内外这方面工作进行总结分析的基础上，针对数字摄影测量立体像对影像匹配的可靠性问题，首次提出了基于良好匹配点三角形约束下影像匹配传播方法；为了解决以往基于邻域操作的地形结构线提取算法效率低下、结果准确性差和处理数据规模限制等问题，提出了适用于大规模规则格网DEM数据的基于矢量、栅格操作相结合的地形结构线快速提取算法。

Constrained by the triangle constraint integrated with the conventional epipolar geometric constraint, the local continuity constraint is enforced by changing the constraint areas dynamically according to the local texture density. 3 The topographic structure extraction and analysis based on grid DEMs are investigated in this dissertation, the topographic structure extraction approach fills depressions by adopting vector processes combined with traditional neighborhood raster processes, assigns flow direction over flat by applying a neighbor-grouping scan method.

2提出了一种基于核线影像对和良好匹配点三角形局部连续性约束和顺序约束下的影像匹配方法，该方法利用已知良好匹配点在Delaunay TIN的约束下进行纹理自适应的匹配传播，同时利用新的匹配点对Delaunay TIN进行动态细化使得局部几何约束区域的大小自动适应影像纹理特征的变化，从而得到更加可靠的影像匹配结果。

A common case of graphical export is the Windows metafile, bitmap, and few other standard raster formats, such as tiff, jpeg, and png.

一个通常的图形输出例子是视窗图元文件，位图和很少的其他标准的格式，如tiff，jpeg 和png。

Furthermore, author analyzes the properties of the multiplicatively weighted Voronoi diagram and the additively weighted Voronoi diagram and the compoundly weighted Voronoi diagram, and with the aid of GIS software author develops a simple raster-based approach to construct above three weighted Voronoi diagrams.

分析了倍增的、相加的和复合的加权Voronoi图的性质，提出了一种基于GIS的构建加权Voronoi图的简便方法，该方法可以生成两维空间上任意图形的加权Voronoi图，这种方法基本上可以满足城市与区域规划应用研究的需要。

The experimental results show that our method can process a certain obliquity, and have high efficiency. It is a novel method for raster map recognition system.?

实验结果表明该方法在地图小角度倾斜时能正确拼接，拼接方法效率高，速度快，是栅格地图识别输入系统中地图拼接的一种新方法。

It is a non contact optical scanner which using raster theory.

它是非接触式的利用光栅原理的光学扫描设备。

Location is defined by an ordered pair of coordinates that identify the location of each unit of geographic space in the raster.

位置由有序的坐标对决定，这些坐标区分栅格数据中的每个地理单元位置。

Proposed a new structure of cone-beam volume CT, which adopts a raster scanning x-ray source on a trough-like surface, and a group of point detectors or linear array detectors distributing on a large circle plus an orthogonal line.

提出一种基于栅形扫描的凹面源和点状或线状探测器的锥形束CT的扫描结构，简称单次旋转的直接体积CT，已申请国家发明专利，申请号为：

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了