摘要
以三江源测区为研究对象,采用传统法和影像自动匹配法进行DEM制作。通过试验研究及对比分析发现:两种方法制作的DEM均能满足精度要求,传统法精度高,过程流畅,工艺纯熟,不足之处是工期较长;影像自动匹配法制作的DEM精度虽不及传统法高,但其工期短,工效是传统法的5倍左右。考虑到在满足精度要求的前提下,作为提高作业效率的一种方法,影像自动匹配法大规模制作DEM可应用于实际生产。
This paper adopts ＂Traditional Method＂ and ＂Image Auto -Matching Method＂ to produce DEM, taking Shah -Jiang - Yuan as the object of study. The results were as follows ： both methods can meets accuracy requirements, comparing with ＂Image Auto -Matching Method＂, ＂Traditional Method＂ is high precision, more smoother, more skillful, and longer period in DEM production; Though ＂Image Auto- Matching Method＂ precision is not as high but its efficiency is five -times compared with ＂Traditional Meth- od＂. Considering the precondition that accuracy satisfying the request, as a way to improve work efficiency in large - scale production of the DEM, ＂Image Auto - Matching Method＂ can be applied to actual production.
出处
《测绘与空间地理信息》
2015年第7期103-105,共3页
Geomatics & Spatial Information Technology
关键词
全数字摄影测量
影像自动匹配
区域网平差
DEM
basic concept of digital photogrammetry
Image Auto - Matching
blockajustment
DEM
