發(fā)布時(shí)間：2018-04-10 13:38

  本文選題：點(diǎn)云 + 三維重建��； 參考：《新疆大學(xué)》2013年碩士論文

【摘要】：地面激光雷達(dá)（LIDAR）作為一種先進(jìn)精確的三維測量工具，所測量的數(shù)據(jù)為點(diǎn)云。點(diǎn)云數(shù)據(jù)結(jié)構(gòu)簡單且細(xì)節(jié)測繪精確，，可快速精確重建物體外表面。點(diǎn)云數(shù)據(jù)三維重建技術(shù)在三維測繪，數(shù)字城市，文物數(shù)字化，災(zāi)害處理，植被監(jiān)測等領(lǐng)域應(yīng)用越來越廣泛，在制造業(yè)領(lǐng)域具有很大設(shè)計(jì)幫助，在工程，科學(xué)等領(lǐng)域的應(yīng)用也不容忽視。降低三維重建算法復(fù)雜度，提高算法效率和質(zhì)量，成為點(diǎn)云模型應(yīng)用領(lǐng)域研究熱點(diǎn)。尤其是針對不規(guī)則復(fù)雜體三維重建，是計(jì)算機(jī)視覺，反求工程，虛擬現(xiàn)實(shí)，計(jì)算機(jī)圖形學(xué)等領(lǐng)域至今較難解決的問題。 具體工作如下幾方面： 1實(shí)測典型復(fù)雜不規(guī)則結(jié)構(gòu)，且曲面呈復(fù)雜自由變化物體-假山，使用逆向工程軟件（geomagic studio）進(jìn)行數(shù)據(jù)預(yù)處理及三維重建，以典型不規(guī)則復(fù)雜體實(shí)測數(shù)據(jù)處理實(shí)驗(yàn)總結(jié)出不規(guī)則結(jié)構(gòu)體三維重建流程； 2使用powercrust算法對幾組不規(guī)則型體三維重建，觀察結(jié)果，簡要分析算法特征和對不同數(shù)據(jù)適用性；使用possion算法對幾組相同數(shù)據(jù)的不規(guī)則型體重建，觀察結(jié)果，簡要分析possion算法特點(diǎn)及對數(shù)據(jù)的適應(yīng)性； 3結(jié)合powercrust算法和possion算法特點(diǎn)進(jìn)行三維重建，并由結(jié)果簡要分析； 4模擬定型體球面點(diǎn)云數(shù)據(jù)，使用不同采樣方式，不同稀疏度獲取數(shù)據(jù)，分別使用powercrust算法，possion算法進(jìn)行三維重建，由定型體不同形式的數(shù)據(jù)檢驗(yàn)算法。對結(jié)果進(jìn)行精度檢驗(yàn)分析。
[Abstract]:As an advanced and accurate 3D measurement tool, Lidar is a point cloud.The point cloud data is simple in structure and accurate in detail mapping, so it can quickly and accurately reconstruct the outer surface of the object.The point cloud data 3D reconstruction technology is more and more widely used in the fields of 3D mapping, digital city, cultural relic digitization, disaster processing, vegetation monitoring and so on. It has great design help in the field of manufacturing, and has been used in engineering.The application of science and other fields can not be ignored.Reducing the complexity of 3D reconstruction algorithm and improving the efficiency and quality of the algorithm has become a research hotspot in the application field of point cloud model.Especially for 3D reconstruction of irregular complex objects, it is difficult to solve the problems in computer vision, reverse engineering, virtual reality, computer graphics and so on.Specific work has been carried out in the following areas:1. The typical complex irregular structures are measured, and the curved surface is complex and free change object-rockery. The data preprocessing and 3D reconstruction are carried out by using reverse engineering software named Geomagic studio.The 3D reconstruction process of irregular structures is summarized by the data processing experiments of typical irregular complex bodies.(2) using powercrust algorithm to reconstruct several groups of irregular bodies, observing the results, analyzing the characteristics of the algorithm and its applicability to different data, using the possion algorithm to build the irregular weight of several groups of the same data, and observing the results.This paper briefly analyzes the characteristics of possion algorithm and its adaptability to data.(3) combining the characteristics of powercrust algorithm and possion algorithm, the 3D reconstruction is carried out, and the results are analyzed briefly.(4) using different sampling methods and different sparsity to obtain the data, and using the powercrust algorithm to reconstruct the data respectively, and then using the different forms of data checking algorithm of the stereotyped body.The accuracy of the results is tested and analyzed.
【學(xué)位授予單位】：新疆大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：P225.2

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