本文選題：三維造型 + 三維模型線表示方法　； 參考：《浙江大學(xué)》2012年碩士論文

【摘要】：動(dòng)漫、玩具和電影產(chǎn)業(yè)是文化創(chuàng)意產(chǎn)業(yè)的重要組成部分,正處于快速發(fā)展時(shí)期,但是隨著發(fā)展水平的逐漸提高,我國(guó)在產(chǎn)品創(chuàng)新設(shè)計(jì)方面的不足,成為了制約這些產(chǎn)業(yè)發(fā)展的主要瓶頸。結(jié)合國(guó)家863計(jì)劃項(xiàng)目“柔性復(fù)雜產(chǎn)品快速創(chuàng)意數(shù)字化設(shè)計(jì)方法研究及其應(yīng)用”(2009AA04Z103),本文對(duì)產(chǎn)品的創(chuàng)新設(shè)計(jì)的重要組成部分——三維造型設(shè)計(jì)進(jìn)行了深入研究。產(chǎn)品三維造型設(shè)計(jì)由于具有幾何形狀的完全表達(dá)能力,正在產(chǎn)品創(chuàng)新設(shè)計(jì)中占據(jù)越來越重要的地位。但是現(xiàn)有三維造型軟件操作復(fù)雜,不能很好地支持手繪草圖,限制了企業(yè)的產(chǎn)品設(shè)計(jì)能力。為此本文提出了利用特征基因表達(dá)三維模型幾何特征,通過草圖繪制語義修改特征基因,并進(jìn)一步實(shí)現(xiàn)三維模型變形的三維造型方法,從而實(shí)現(xiàn)草圖三維造型。全文共分為以下六章： 第一章：概述了我國(guó)動(dòng)漫、玩具和電影行業(yè)發(fā)展現(xiàn)狀,闡述了其產(chǎn)品設(shè)計(jì)現(xiàn)狀以及其中存在的問題,并對(duì)國(guó)內(nèi)外相關(guān)領(lǐng)域的研究情況進(jìn)行了借鑒性介紹。由此給出了本文的研究?jī)?nèi)容和研究思路。 第二章：給出了特征基因的定義、提取和優(yōu)化方法。首先在對(duì)三維模型主要的線表示方法進(jìn)行詳細(xì)分析的基礎(chǔ)上,給出了特征基因定義。然后對(duì)特征基因在三維空間提取算法進(jìn)行了闡述。最后利用矢量化和簡(jiǎn)化處理,對(duì)特征基因進(jìn)行優(yōu)化。 第三章：探討了草圖繪制語義、草圖驅(qū)動(dòng)特征基因變形及特征基因三維映射的基本方法。首先在對(duì)設(shè)計(jì)師常用草圖繪制方法的歸納基礎(chǔ)上,提出了草圖繪制語義定義,并給出了語義識(shí)別過程的關(guān)鍵算法；其次在活動(dòng)輪廓模型的基礎(chǔ)上,針對(duì)特征基因給出了基于活動(dòng)輪廓模型的特征基因變形算法；最后結(jié)合草圖繪制及視覺認(rèn)知的特點(diǎn),提出了符合認(rèn)知習(xí)慣的特征基因三維映射方法。 第四章：針對(duì)不同草圖繪制語義給出了相應(yīng)的曲面變形算法。首先對(duì)具有曲面局部特征保持性質(zhì)的拉普拉斯變形算法進(jìn)行了闡述,并在此基礎(chǔ)上分別針對(duì)修改、添加和陰影繪制等草圖語義,分別實(shí)現(xiàn)了基于特征基因線條變動(dòng)、添加和陰影效果的曲面變形方法,實(shí)現(xiàn)曲面造型。 第五章：介紹了利用本文方法實(shí)現(xiàn)的三維造型CAD系統(tǒng)的基本功能,并給出了相應(yīng)的產(chǎn)品造型實(shí)例。 第六章：全文的總結(jié)和展望,對(duì)本文的主要研究?jī)?nèi)容和創(chuàng)新點(diǎn)進(jìn)行總結(jié),并指出了目前存在的主要問題及其改進(jìn)思路。
[Abstract]:The animation, toy and film industries are an important part of the cultural and creative industries and are in a period of rapid development. However, with the gradual improvement of the level of development, our country is deficient in product innovation design. It has become the main bottleneck restricting the development of these industries. Combined with the national 863 project "flexible complex product rapid creative digital design method research and its application" 2009AA04Z103U, this paper has carried on the thorough research to the product innovation design important component-three-dimensional modelling design. Product 3D modeling is playing a more and more important role in product innovation design because of its full expression ability of geometric shape. However, the existing 3D modeling software is complex in operation and can not support sketching well, which limits the product design ability of enterprises. In this paper, a 3D modeling method using feature gene to express 3D model geometry feature and modify feature gene by sketch semantics is proposed to realize 3D modeling. The full text is divided into the following six chapters: The first chapter summarizes the current situation of animation, toy and film industry in China, expounds the current situation of product design and the existing problems, and introduces the research situation of related fields at home and abroad. From this, the research contents and research ideas of this paper are given. Chapter 2: the definition, extraction and optimization of characteristic gene are given. Firstly, based on the detailed analysis of the main line representation methods of 3D model, the definition of characteristic gene is given. Then, the algorithm of feature gene extraction in three-dimensional space is described. Finally, the characteristic gene was optimized by vectorization and simplification. Chapter 3: the basic methods of sketch drawing semantics, sketch driving feature gene deformation and feature gene 3D mapping are discussed. First of all, based on the induction of common sketch drawing methods, the semantic definition of sketch drawing is proposed, and the key algorithm of semantic recognition is given. Secondly, on the basis of active contour model, An algorithm of feature gene deformation based on active contour model is presented for feature genes. Finally, combining the characteristics of sketch drawing and visual cognition, a new method of feature gene mapping is proposed, which accords with cognitive habits. Chapter 4: the corresponding surface deformation algorithm is given for different sketch semantics. First of all, the Laplace deformation algorithm with the property of preserving the local feature of the surface is described, and on this basis, the line changes based on the feature gene are realized respectively for the sketch semantics such as modification, addition and shadow rendering. Add and shadow effect of surface deformation method to achieve surface modeling. Chapter 5: the basic functions of 3D modeling CAD system realized by this method are introduced, and the corresponding product modeling examples are given. Chapter VI: the summary and prospect of the full text, the main research content and innovation of this paper are summarized, and pointed out the existing main problems and their improvement ideas.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TP391.72

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本文編號(hào)：1954526