遥感图像点线元位置不确定性的可视化研究  

Research of Visualizing on Location Uncertainty of Point and Line Elements of Remote Sensing Image

作　　者：梁敏中 洪友堂[2] 钟永松[2] 

机构地区：[1]陕西省地质矿产勘查开发局第二综合物探大队,陕西西安710016 [2]中国地质大学(北京)土地科学技术学院,北京100083

出　　处：《地矿测绘》2014年第3期4-7,共4页Surveying and Mapping of Geology and Mineral Resources

摘　　要：空间数据质量的不确定性研究伴随着GIS的问世而开始,主要包括位置不确定性、属性不确定性、时域不确定性等。近年来,空间数据的位置不确定性研究成为研究热点,主要包括数据源不确定性的研究、点线面元不确定性模型研究、不确定性可视化研究等。文章主要针对点线元不确定性的可视化展开讨论,说明误差椭圆、矢量箭头和等高线3种方法表达点元不确定性可视化的优缺点以及利用G-带模型来表达线元的不确定性。The uncertainty research of spatial data quality began with the advent of GIS. The uncertainties mainly includes uncertainty in position, attribute and time domain and so on. In recent years, the positional uncertainty research on spatial data has become the research focus, including the researchs of the data source uncertainty, point-line-surface element model uncertainty, visualization uncertainty and so on. This paper discusses the visual uncertainty of point and line elements to explain the advantages and disadvantages of the error ellipse method, vector arrow method and contour line method on expressing visualization of uncertainty for point element and to show the uncertainty of line element expressed by G-band model.

关 键 词：遥感图像 位置不确定性 误差带 可视化 误差椭圆法 矢量箭头法 等高线法 

分 类 号：P237[天文地球—摄影测量与遥感]