發(fā)布時(shí)間：2018-04-08 18:15

  本文選題：虛擬現(xiàn)實(shí)　切入點(diǎn)：圖像拼接　出處：《云南財(cái)經(jīng)大學(xué)》2013年碩士論文

【摘要】：360°全景又稱(chēng)虛擬現(xiàn)實(shí)全景或三維全景，是目前迅速發(fā)展并流行的一個(gè)虛擬現(xiàn)實(shí)的分支，它是基于序列圖片的數(shù)字三維全景技術(shù)，也是近年來(lái)圖像繪制技術(shù)的重要研究?jī)?nèi)容。廣義上的360°全景是一種基于圖像處理的虛擬漫游技術(shù)，也叫虛擬現(xiàn)實(shí)（Virtual Reality）全景。它是一種基于圖像的虛擬現(xiàn)實(shí)技術(shù)，它用拍攝到的真實(shí)照片經(jīng)過(guò)加工處理讓用戶(hù)產(chǎn)生三維真實(shí)的感覺(jué)，這是普通圖片和三維建模技術(shù)都做不到的。雖然普通的圖片也可以起到展示和記錄的作用，但是它的視角范圍受限，也沒(méi)有立體感，而360°全景在給用戶(hù)提供全方位視角的基礎(chǔ)上，還給人帶來(lái)三維立體感覺(jué)，好像置身于其中。正是因?yàn)樗倪@種優(yōu)勢(shì)，數(shù)字三維全景已經(jīng)開(kāi)始被應(yīng)用到數(shù)字三維校園、網(wǎng)絡(luò)三維業(yè)務(wù)、醫(yī)療、航空、房地產(chǎn)、旅游風(fēng)光等領(lǐng)域。而球面全景圖相對(duì)其他幾種模型更符合人們的觀(guān)察習(xí)慣，具有更好的視覺(jué)效果，所以本文重點(diǎn)對(duì)球面全景圖的生成技術(shù)進(jìn)行了研究。 本文系統(tǒng)的研究了全景圖生成技術(shù)中的幾個(gè)關(guān)鍵技術(shù)，在理論研究的同時(shí)，還與云南財(cái)經(jīng)大學(xué)檔案館的數(shù)字化建設(shè)相結(jié)合，完成了云南財(cái)經(jīng)大學(xué)校史館的三維全景系統(tǒng)制作，通過(guò)實(shí)踐，對(duì)論文中虛擬全景技術(shù)的現(xiàn)實(shí)意義、關(guān)鍵技術(shù)等相關(guān)研究?jī)?nèi)容有了更深層理解。 首先，本文結(jié)合國(guó)內(nèi)外虛擬現(xiàn)實(shí)的發(fā)展研究狀況，介紹了全景技術(shù)的基本概念及其優(yōu)勢(shì)。常用的幾種投影模型：球面投影模型、柱面投影模型和立方體投影模型，在比較各自?xún)?yōu)缺點(diǎn)之后，決定本文選擇球面投影模型。然后介紹了三維全景生成的流程，包括圖像采集中設(shè)備的選擇、拍攝注意事項(xiàng)、圖像預(yù)處理、圖像拼接、融合、球面反投影算法、后期制作等相關(guān)步驟中的一些基礎(chǔ)知識(shí)，并重點(diǎn)對(duì)圖像的拼接和融合算法進(jìn)行了深入研究，在保留先前算法優(yōu)點(diǎn)的基礎(chǔ)上對(duì)之進(jìn)行了改進(jìn)，通過(guò)實(shí)驗(yàn)證明，改進(jìn)后的算法比改進(jìn)前擁有更好的拼接融合質(zhì)量。最后，與云南財(cái)經(jīng)大學(xué)校史館的三維全景制作相結(jié)合，將論文中研究的全景制作技術(shù)得到了應(yīng)用，，通過(guò)實(shí)踐，使理論知識(shí)的研究得到更進(jìn)一步的理解，做到了理論與實(shí)踐相結(jié)合。
[Abstract]:360 擄panorama, which is also called virtual reality panorama or 3D panorama, is a branch of virtual reality, which is rapidly developed and popular at present. It is a digital 3D panoramic technology based on sequence images, and it is also an important research content of image rendering technology in recent years.In general, 360 擄panorama is a virtual roaming technology based on image processing, also called virtual reality panorama.It is a kind of virtual reality technology based on image. It can make the user feel 3D reality by processing the real photos, which can not be done by the common picture and 3D modeling technology.Although ordinary pictures can also play the role of display and recording, but its view range is limited, there is no three-dimensional sense, and 360 擄panorama gives the user a full view of the basis, also bring a three-dimensional feeling.Seems to be in the middle.It is precisely because of this advantage that digital 3D panorama has been applied to digital 3D campus, network 3D business, medical, aviation, real estate, tourism and other fields.Compared with other models, spherical panoramic images are more in line with people's observation habits and have better visual effects. Therefore, this paper focuses on the research of spherical panoramic image generation technology.This paper systematically studies several key technologies of panoramic image generation technology. At the same time of theoretical research, it also combines with the digitization construction of Yunnan University of Finance and Economics Archives, and completes the 3D panoramic system production of Yunnan University of Finance and Economics University History Museum.Through practice, we have a deeper understanding of the practical significance and key technologies of virtual panorama technology in this paper.Firstly, this paper introduces the basic concepts and advantages of panoramic technology in combination with the development of virtual reality at home and abroad.Several common projection models: spherical projection model, cylindrical projection model and cube projection model. After comparing their advantages and disadvantages, the spherical projection model is chosen in this paper.Then it introduces the process of 3D panoramic generation, including the selection of equipment in image acquisition, the matters needing attention, image preprocessing, image mosaic, fusion, spherical back-projection algorithm, post-production and other related steps.The algorithm of image stitching and fusion is studied in detail and improved on the basis of preserving the advantages of the previous algorithm. The experimental results show that the improved algorithm has better quality than that before the improvement.Finally, combined with the 3D panoramic production of Yunnan University of Finance and Economics University History Museum, the panoramic production technology studied in this paper has been applied, and through practice, the research of theoretical knowledge has been further understood.The combination of theory and practice has been achieved.
【學(xué)位授予單位】：云南財(cái)經(jīng)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類(lèi)號(hào)】：TP391.41;TP391.9

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 趙斌;華一新;;用道路實(shí)景增強(qiáng)門(mén)戶(hù)網(wǎng)站中地理信息的可視性[J];測(cè)繪科學(xué);2007年S1期

2 劉二年;豐江帆;張宏;;基于Flex的環(huán)保WebGIS研究[J];測(cè)繪與空間地理信息;2006年02期

3 張宏;豐江帆;閭國(guó)年;滕學(xué)偉;;基于RIA技術(shù)的WebGIS研究[J];地球信息科學(xué);2007年02期

4 郭長(zhǎng)青;曹芳;;三維全景技術(shù)在旅游景區(qū)介紹中的應(yīng)用[J];地理空間信息;2009年01期

5 楊曉宇,黃毓瑜;基于Surfels的實(shí)時(shí)渲染技術(shù)研究[J];工程圖學(xué)學(xué)報(bào);2003年01期

6 孫華燕,周道炳,李生良;一種序列圖像的拼接方法[J];光學(xué)精密工程;2000年01期

7 楊琳;趙建民;朱信忠;徐慧英;鄭國(guó)強(qiáng);;虛擬校園三維全景漫游技術(shù)研究[J];計(jì)算機(jī)工程與科學(xué);2007年10期

8 張潔;;城市吧——從三維到實(shí)景的質(zhì)變[J];電子商務(wù)世界;2006年09期

9 李德仁;沈欣;;論基于實(shí)景影像的城市空間信息服務(wù)——以影像城市·武漢為例[J];武漢大學(xué)學(xué)報(bào)(信息科學(xué)版);2009年02期

10 郭巍;;虛擬現(xiàn)實(shí)技術(shù)特性及應(yīng)用前景[J];信息與電腦(理論版);2010年05期

本文編號(hào)：1722770