摘要
针对传统的细化算法如经典细化算法、跟踪剥皮算法等在细化时需花费大量的时间这一问题，提出了一种基于最短距离边缘跟踪技术的细化算法，此算法通过对线宽两边相应边缘点中点的求取来细化并同时矢量化，能有效地提高细化速度。
On the basis of observation on deformations of the Shiqiao single line ship lock,the reversible variation rules for its vertical and horizotal deformations caused by variation of underground water level in construction of double line ship lock are discussed.It is proven that use of the underground antiseepage walls and the recharge to control the undergroud water level behind the wall of the single line ship lock not below ±0.0m are reasonable.
出处
《水利水电科技进展》
CSCD
1999年第2期35-37,共3页
Advances in Science and Technology of Water Resources
关键词
细化
屏幕数字化
图件扫描
地理信息系统
ship lock
deformation observation
vertical displacement
horizontal displacement
underground water level
