本文選題：開運算 + 形態(tài)學濾波��； 參考：《遙感信息》2017年01期

【摘要】：針對傳統(tǒng)的基于開運算的形態(tài)學濾波方法在坡度連續(xù)變化較大的區(qū)域無法有效濾除非地面點的問題,提出了一種可適應斜坡地形的濾波新方法。首先對全區(qū)域進行分塊,構建地面不規(guī)則三角網(wǎng)確定各分塊區(qū)域的地形坡度和方向;然后根據(jù)地形坡度和方向對各分塊區(qū)域內(nèi)的數(shù)據(jù)進行旋轉,使地形坡度接近于水平,從而更適用于基于開運算的形態(tài)學濾波方法;最后對點云數(shù)據(jù)執(zhí)行多尺度形態(tài)學開運算確定地面點。分別選擇平坦地形和斜坡地形的車載激光點云數(shù)據(jù)進行了實驗,兩類點云數(shù)據(jù)均包含植被、建筑、裸地等,結果表明,提出的方法能夠有效濾除各種類型地物,并且對斜坡地形具有較好的濾波效果。
[Abstract]:Aiming at the problem that the traditional morphological filtering method based on open operation can not effectively filter except the ground points in areas with large continuous slope changes, a new filtering method for slope topography is proposed in this paper. Firstly, the terrain gradient and direction of each block area are determined by constructing the ground irregular triangle network, and then the data in each block area are rotated according to the terrain slope and direction, so that the terrain slope is close to the level. So it is more suitable for morphological filtering method based on open operation. Finally, multi-scale morphological open operation for point cloud data is performed to determine the ground point. The experimental results show that the two kinds of point cloud data include vegetation, building, bare land and so on. The results show that the proposed method can filter all kinds of ground objects effectively. And the slope terrain has better filtering effect.
【作者單位】： 山東科技大學海洋工程研究院;海島(礁)測繪技術國家測繪地理信息局重點實驗室;山東科技大學測繪科學與工程學院;
【基金】：測繪公益性行業(yè)科研專項經(jīng)費資助項目(201512034) 海洋公益性行業(yè)科研專項經(jīng)費資助項目(201305034) 山東省高等學校科技計劃項目(J13LH04) 海島(礁)測繪技術國家測繪地理信息局重點實驗室資助項目(2015A01) 山東科技大學教育教學研究“群星計劃”項目(qx2013307);山東科技大學研究生教育創(chuàng)新計劃資助項目(KDYC15004)
【分類號】：P237

【參考文獻】

相關期刊論文 前5條

1 盧秀山;劉如飛;田茂義;劉冰;;利用改進的數(shù)學形態(tài)法進行車載激光點云地面濾波[J];武漢大學學報(信息科學版);2014年05期

2 吳叢叢;盧小平;李國利;馮之前;李s，

本文編號：1783626