發(fā)布時(shí)間：2018-10-12 18:57

【摘要】：鑒于常規(guī)曲線化簡(jiǎn)方法應(yīng)用于水系曲線化簡(jiǎn)時(shí)難以顧及水系要素的三維特征及其拓?fù)潢P(guān)系,本文提出了一種顧及拓?fù)湟恢滦缘乃等S曲線化簡(jiǎn)方法。該方法首先對(duì)D-P算法進(jìn)行三維擴(kuò)展,實(shí)現(xiàn)水系中單條河流三維曲線化簡(jiǎn),然后構(gòu)建水系樹(shù)結(jié)構(gòu)表達(dá)其拓?fù)潢P(guān)系,最后按照水系樹(shù)的層次順序依次進(jìn)行河流曲線化簡(jiǎn)和干流與支流的拓?fù)潢P(guān)系重構(gòu)。試驗(yàn)結(jié)果表明,該方法化簡(jiǎn)精度高,既能保持水系的三維形態(tài)特征,又能保證河流交匯處的拓?fù)湟恢滦浴?br/>[Abstract]:In view of the fact that it is difficult to take into account the three-dimensional characteristics of water system elements and their topological relations when the conventional curve simplification method is applied to the water system curve simplification, this paper presents a method of water system three-dimensional curve simplification which takes into account the topological consistency. Firstly, the D-P algorithm is expanded to realize the simplification of three-dimensional curves of a single river in the river system, and then the structure of the river tree is constructed to express its topological relationship. Finally, the river curve is simplified and the topological relationship between the main stream and the tributary is reconstructed according to the hierarchical order of the river system tree. The experimental results show that the method has high precision and can not only maintain the three-dimensional morphological characteristics of the river system, but also guarantee the topological consistency of the river interface.
【作者單位】： 南京師范大學(xué)地理科學(xué)學(xué)院;虛擬地理環(huán)境教育部重點(diǎn)實(shí)驗(yàn)室;江蘇省地理信息資源開(kāi)發(fā)與利用協(xié)同創(chuàng)新中心;滁州學(xué)院地理信息與旅游學(xué)院;安徽省地理信息集成應(yīng)用協(xié)同創(chuàng)新中心;
【基金】：國(guó)家自然科學(xué)基金(41171350;41301514;41501496) 滁州學(xué)院校級(jí)培育項(xiàng)目(2014PY03)~~
【分類號(hào)】：P208

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本文編號(hào)：2267247