1:50000～1:60000航片制作1:10000DOM可行性研究

Research on Mapping 1:10 000 DOM with 1:50 000-1:60 000 Aerial Photograph

利用航片制作1∶10 000 DOM可作为农村土地调查使用高分辨率遥感数据的重要来源。本文以承德实验区为例,通过航片控制测量,采用全数字摄影测量系统制作1∶10 000 DOM,并评价其平面精度是否满足规范的要求,以及地类解译能力。研究表明:采用1∶50 000～1∶60 000万航片制作的1∶10 000 DOM,平面精度优于规范规定要求,影像清晰、色调均匀、反差适中,不同地块之间的界线明显,图斑边界、面积与土地利用数据库吻合情况良好,1∶50 000～1∶60 000航片可以满足农村土地调查所需1∶10 000 DOM制作的要求。

Mapping 1：10 000 digital ortho -photo map （DOM） from aerial photograph can provide an important supplement for high remote sensing imageries in countryside land surveying. According to relative technical standards, control surveying on aerial photo- graph is used to evaluate the satisfaetion rate between its plane precision and the standard and the ability of interpreting land use clas- ses with experiment data of Chengde area. The results show that： I ） the plane precision is superior to the requirements of relative technical standards; 2） the resultant has clear appearance, uniform color, medium contrast, and clear boundaries between different plots; 3 ） the boundaries and areas of plots match well with those of land use database. So, it can be concluded that the proposed scheme could satisfy the requirements of countryside land surveying.