基于蛇模型的等深线化简质量定量调控方法  

Quantitative Quality Control Method of Depth-contour Simplification Based on Snake Model

作　　者：温连发 张华 丁金挺 WEN Lianfa;ZHANG Hua;DING Jinting(Chart Information Center,Tianjin 300450,China)

机构地区：[1]海图信息中心,天津300450

出　　处：《海洋测绘》2020年第1期49-52,57,共5页Hydrographic Surveying and Charting

摘　　要：针对当前等深线的化简过程未考虑化简后等深线质量的问题,以基于蛇模型的等深线化简方法为基础,引入航海图等深线化简质量的定量评估方法,对化简后等深线的质量进行定量评估,并将评估结果作为蛇模型算法的总能量,实现了等深线化简过程的定量调控,提出了基于蛇模型的等深线化简质量定量调控方法。实验结果表明:该方法能够根据等深线的化简质量定量调控等深线的化简过程,不仅能够提高航海图等深线的化简质量,而且为后续等深线化简算法的研究提供了新的思路。Aiming at the problem that the quality of simplified depth-contour is not considered in the current process of depth-contour simplification,concerning the method of depth-contour simplification based on snake model,a quantitative evaluation method of the quality of simplified depth-contour in nautical charts is introduced to quantitatively evaluate the quality of simplified depth-contour,and the evaluation results are taken as the total energy of snake model algorithm.The quantitative control of depth-contour simplification process is realized,and a quantitative control method of depth-contour simplification quality based on Snake model is proposed.The experimental results show that the method can quantitatively control the process of depth-contour simplification according to the quality of simplified depth-contour.This paper not only improves the simplification quality of chart contours,but also provides a new idea for the follow-up research of contour simplification algorithm.

关 键 词：等深线 化简质量 定量调控 蛇模型 质量指标 

分 类 号：P208[天文地球—地图制图学与地理信息工程]