本文選題：復(fù)雜型面 + 三維掃描��； 參考：《華東理工大學(xué)》2012年碩士論文

【摘要】：隨著測量技術(shù)的不斷發(fā)展,非接觸式三維掃描儀已廣泛應(yīng)用于產(chǎn)品改型、文物復(fù)制、和醫(yī)療診斷等領(lǐng)域。它能夠快速地獲取物體的三維點(diǎn)云數(shù)據(jù),利用建模軟件的數(shù)據(jù)合并、特征提取和曲面擬合等功能進(jìn)行數(shù)據(jù)處理,重建物體的三維模型。本文主要致力于提高非接觸式三維掃描系統(tǒng)的掃描精度和速度,提出了針對不同復(fù)雜型面的掃描和建模方法,更好地滿足了高精度、高效率以及適合各種曲面的數(shù)字化應(yīng)用需求。 三維掃描系統(tǒng)結(jié)構(gòu)參數(shù)的偏差會導(dǎo)致測量坐標(biāo)不精確,本文對三角測量原理和相機(jī)鏡頭畸變原理進(jìn)行研究,通過修正鏡頭畸變提高掃描精度。為減少手動旋轉(zhuǎn)被測物體所帶來的誤差,本文設(shè)計(jì)了兩軸回轉(zhuǎn)系統(tǒng),通過與三維掃描儀配合使用,快速、準(zhǔn)確的獲取與實(shí)際物體最為近似的點(diǎn)云數(shù)據(jù),實(shí)現(xiàn)了掃描的定量化操作。 某些無法避免的外部因素,使掃描過程中產(chǎn)生了大量的點(diǎn)云數(shù)據(jù)和噪聲點(diǎn),為后續(xù)建模增加了難度。本文在對硬質(zhì)合金可轉(zhuǎn)位刀片建模過程中,通過研究ICP算法原理和NURBS曲面生成原理,在Geomagic Studio點(diǎn)階段對點(diǎn)云數(shù)據(jù)進(jìn)行噪聲去除、數(shù)據(jù)精簡和點(diǎn)云拼接等處理；多邊形和形狀階段將處理后的點(diǎn)云數(shù)據(jù)轉(zhuǎn)化為一個理想的曲面模型；制作階段通過特征提取提高產(chǎn)品的設(shè)計(jì)效率,完善產(chǎn)品的性能分析。
[Abstract]:With the development of measurement technology, contactless 3D scanners have been widely used in the fields of product modification, cultural relic reproduction, medical diagnosis and so on. It can quickly acquire the 3D point cloud data of the object and reconstruct the 3D model of the object by using the functions of data merging feature extraction and surface fitting of the modeling software. In this paper, the scanning accuracy and speed of the contactless 3D scanning system are improved, and the scanning and modeling methods for different complex surfaces are proposed, which can better meet the high accuracy. High efficiency and suitable for digital applications of various surfaces. The deviation of structural parameters of 3D scanning system will lead to the imprecision of measuring coordinate. In this paper, the principle of triangulation and camera lens distortion is studied, and the scanning accuracy is improved by correcting lens distortion. In order to reduce the error caused by the manual rotation of the measured object, a two-axis rotary system is designed in this paper. Through the use of the 3D scanner, the point cloud data which is the closest to the actual object can be obtained quickly and accurately. The quantitative operation of scanning is realized. Some unavoidable external factors make the scanning process produce a lot of point cloud data and noise points, which makes the subsequent modeling more difficult. In this paper, in the process of modeling cemented carbide indexable inserts, by studying the principle of ICP algorithm and Nurbs surface generation, the point cloud data are removed, data reduced and point cloud splicing are processed in Geomagic Studio. The polygon and shape phase transform the processed point cloud data into an ideal curved surface model, and improve the design efficiency and performance analysis of the product by feature extraction in the production stage.
【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TP391.41;TP334.22

【參考文獻(xiàn)】

相關(guān)期刊論文 前7條

1 王清松 ,馬文星 ,趙罡 ,于清;液力變矩器葉輪和葉片非接觸測量及三維建模[J];工程機(jī)械;2004年04期

2 許志龍;;逆向工程中多視角點(diǎn)云數(shù)據(jù)拼合技術(shù)[J];組合機(jī)床與自動化加工技術(shù);2006年07期

3 聶軍洪,周來水,張麗艷,安魯陵;任意拓?fù)浣Y(jié)構(gòu)網(wǎng)格模型自適應(yīng)調(diào)整和光順?biāo)惴╗J];計(jì)算機(jī)輔助設(shè)計(jì)與圖形學(xué)學(xué)報(bào);2003年05期

4 柯映林,單東日;基于邊特征的點(diǎn)云數(shù)據(jù)區(qū)域分割[J];浙江大學(xué)學(xué)報(bào)(工學(xué)版);2005年03期

5 吳少平;張愛武;臧克;;基于虛擬標(biāo)定場的數(shù)碼相機(jī)內(nèi)參數(shù)標(biāo)定方法[J];系統(tǒng)仿真學(xué)報(bào);2006年S2期

6 吳娜;佟金;陳東輝;張書軍;陳秉聰;;基于逆向工程技術(shù)的蜣螂外形數(shù)據(jù)采集與處理[J];農(nóng)業(yè)機(jī)械學(xué)報(bào);2006年05期

7 羅先波,鐘約先,李仁舉;三維掃描系統(tǒng)中的數(shù)據(jù)配準(zhǔn)技術(shù)[J];清華大學(xué)學(xué)報(bào)(自然科學(xué)版);2004年08期

相關(guān)博士學(xué)位論文 前1條

1 楊軍;點(diǎn)模型的降噪與三維重建算法研究[D];西南交通大學(xué);2007年

相關(guān)碩士學(xué)位論文 前3條

1 李寒;基于激光掃描數(shù)據(jù)的三維場景重建技術(shù)的研究[D];大連理工大學(xué);2006年

2 陳昌宋;商品化的反求系統(tǒng)三維重構(gòu)關(guān)鍵技術(shù)研究[D];華中科技大學(xué);2004年

3 周杰;基于多區(qū)域分割及模糊邏輯的自動曝光方法[D];上海交通大學(xué);2007年

，

本文編號：2069865