摘要
植被符号抽稀是大比例尺地形图缩编的一项内容。人工重新配置植被符号的时间成本大、符号分布不均匀;而已知软件处理效果尚不理想,后期修改工作量大。通过分析人工与软件抽稀植被符号的实例,结合现行规范,提出了一种植被符号抽稀的新方法:基于植被图斑边界,利用品字图案填充的方式实现植被符号抽稀。建立植被图斑边界或通过计算重构植被图斑是抽稀方法的基础环节。
Vegetation symbol thinning is the content of large scale topographic map downsizing. The artificial reconfiguration of the vegetation symbol has a large time cost and uneven symbol distribution. The known software processing effect is not satisfactory, and the later modification workload is large. Through studying the examples of artificial and software vegetation symbol thinning, combining with the current norms, we gave a new method of vegetation symbol thinning. Based on the vegetation land patch boundary, this method used the filling with the straggered rectangle pattern to realize the vegetation symbol thinning. Establishing the vegetation land patch boundary and reconstructing the vegetation land patch by calculation are the basic links of the thinning method.
出处
《地理空间信息》
2019年第11期116-118,I0003,共4页
Geospatial Information
关键词
缩编
植被符号
抽稀
TIN
品字图案
downsizing
vegetation symbol
thinning
TIN
straggered rectangle pattern
