本文選題：虛擬現(xiàn)實　切入點：場景特效　出處：《中國海洋大學》2010年碩士論文

【摘要】：現(xiàn)代虛擬現(xiàn)實技術(shù)起源于上個世紀六十年代,然而多年以前,虛擬現(xiàn)實技術(shù)一直作為一項高端技術(shù)應(yīng)用于工業(yè)設(shè)計,航空航天,軍事領(lǐng)域等,并沒有對我們?nèi)粘Ｉ顜硖蟮挠绊�。近十年�?硬件技術(shù)迅速發(fā)展,計算機得以普及,虛擬現(xiàn)實技術(shù)逐漸向民有領(lǐng)域滲透,對人們?nèi)粘Ｉ町a(chǎn)生了巨大影響,作為虛擬現(xiàn)實技術(shù)的一個分支運行于PC上的桌面式虛擬現(xiàn)實系統(tǒng)將虛擬現(xiàn)實技術(shù)拓展到影視,娛樂,教育等日常生活中。基于PC的桌面式虛擬現(xiàn)實系統(tǒng)通常與用戶短距離接觸,具有良好的實時性與真實性才能讓用戶獲得良好體驗,以達到“虛擬現(xiàn)實”的效果。 本論文以海洋場景模擬為主要研究對象,專注于虛擬現(xiàn)實系統(tǒng)中的“實時性”與“真實性”,介紹筆者在相關(guān)領(lǐng)域的一些研究成。并重點對以下幾個方面進行詳細討論： 1.對于魚類的仿真：將魚類分為兩大類,魚群與單個魚,魚群通常有成百上千條魚組成,用戶通常關(guān)注整體形態(tài),而不是魚群中的每條魚。我們采用面片魚對其進行仿真,以達到良好的實時性。對于一些需要表現(xiàn)細節(jié)的魚,我們采用骨骼動畫對其進行仿真。 2.水刻蝕效果的仿真：水刻蝕是一種復雜的物理過程,按其物理原理進行仿真通常達不到實時性的要求,在這里我們采用動態(tài)紋理和投影貼圖技術(shù)對其進行仿真。 3.對于海底汽泡的仿真：構(gòu)建了一個通用的粒子系統(tǒng),根據(jù)汽泡在海底形態(tài)及受力情況對其進行仿真。 4.海浪仿真：目前對海浪仿真主要使用正弦函數(shù)及傅立葉變換對其進行數(shù)學建模,都要進行大量的運算,在大場景中常常達不到實時性的要求。在這里,我們采用高度圖對作為其高度數(shù)據(jù)的來源,計算量大大減少,此外,還有一個優(yōu)點,針對不同天氣海浪仿真,我們只要更換不同的高度圖即可,而傳統(tǒng)方法卻需要重新對其構(gòu)建數(shù)學物理模型。 本文通過以上幾方面的研究,對虛擬現(xiàn)實海洋場景的模擬進行了新的嘗試,實現(xiàn)了虛擬現(xiàn)實與海洋動漫平臺的結(jié)合。研究方法可以運用于對其它場景的仿真。
[Abstract]:Modern virtual reality technology originated in the 1960s, but many years ago, virtual reality technology has been used as a high-end technology in industrial design, aerospace, military fields, etc.It doesn't make a big difference in our daily lives.In the past ten years, with the rapid development of hardware technology and the popularization of computers, virtual reality technology has gradually penetrated into the field of people, which has had a great impact on people's daily life.As a branch of virtual reality technology, desktop virtual reality system, which runs on PC, extends virtual reality technology to daily life, such as film and television, entertainment, education and so on.The desktop virtual reality system based on PC is usually in short distance contact with the user, which has good real-time and authenticity to make the user get good experience and achieve the effect of "virtual reality".In this paper, ocean scene simulation is the main research object, focusing on the "real time" and "authenticity" in virtual reality system.The following aspects are discussed in detail:1.For fish simulation: fish are divided into two categories: fish group and single fish, the fish group usually has hundreds of fish, users usually focus on the overall form, not every fish in the fish herd.In order to achieve good real-time performance, we use the fish to simulate it.For some fish that need to express details, we use skeletal animation to simulate it.2.Simulation of water etching effect: water etching is a complex physical process. Simulation based on its physical principle usually can not meet the requirements of real-time. Here we use dynamic texture and projection mapping technology to simulate it.3.For the simulation of submarine bubble, a general particle system is constructed, which is simulated according to the shape and force of bubble on the sea floor.4.Ocean wave simulation: at present, sinusoidal function and Fourier transform are mainly used to model the wave simulation.Here, we use the altimeter pair as the source of its height data, and the amount of computation is greatly reduced. In addition, we have the advantage that for different weather and wave simulation, we just have to replace the different height maps.However, the traditional method needs to reconstruct the mathematical and physical model.In this paper, a new attempt is made on the simulation of virtual reality ocean scene through the above research, and the combination of virtual reality and ocean animation platform is realized.The research method can be applied to the simulation of other scenarios.
【學位授予單位】：中國海洋大學
【學位級別】：碩士
【學位授予年份】：2010
【分類號】：TP391.9

【引證文獻】

相關(guān)碩士學位論文 前1條

1 黃亞玲;虛擬現(xiàn)實中動態(tài)噴泉及動態(tài)水面效果渲染[D];哈爾濱工程大學;2012年

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本文編號：1701831