摘要
在地图综合的过程中,比例尺的变化以及各种综合算子都可能导致目标产生空间关系冲突。以往在对空间关系进行维护时,通常只是对拓扑关系变化进行探测与控制。由于方向关系是人们在日常生活中用途最为广泛的空间关系,研究在地图综合中如何有效维护目标间的方向关系具有重要的科学意义。本文采用定性空间推理的方法,建立考虑目标方向关系的移位安全区,从而可以综合检测与控制拓扑关系与方向关系的冲突及其传播,并就本方法存在的问题和今后的研究方向提出了一些看法和思路。
During map generalization, spatial relation conflicts will be caused by the change of the scale and various generalization operators. Topology relation is the only aspect which is detected and controlled when spatial relation maintains. Because direction relation is the most useful spatial relation in daily life, it is of great importance to effectively maintain spatial relation among objects. By means of qualitative spatial reasoning, the safe region of displacement considering direction relation is established to synthetically detect and control the conflicts and transition of topology and direction relation. The existing problems and future research directions are also discussed.
出处
《测绘科学》
CSCD
北大核心
2006年第1期106-108,共3页
Science of Surveying and Mapping
基金
国家自然科学基金项目(40401050
40401021)资助
关键词
空间推理
空间关系冲突
移位安全区
spatial reasoning
spatial relation conflicts
safe region of displacement
