發(fā)布時間：2018-04-08 18:15

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

【摘要】：360°全景又稱虛擬現(xiàn)實全景或三維全景，是目前迅速發(fā)展并流行的一個虛擬現(xiàn)實的分支，它是基于序列圖片的數(shù)字三維全景技術，也是近年來圖像繪制技術的重要研究內(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，也叫虛擬現(xiàn)實（Virtual Reality）全景。它是一種基于圖像的虛擬現(xiàn)實技術，它用拍攝到的真實照片經(jīng)過加工處理讓用戶產(chǎn)生三維真實的感覺，這是普通圖片和三維建模技術都做不到的。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，也沒有立體感，而360°全景在給用戶提供全方位視角的基礎上，還給人帶來三維立體感覺，好像置身于其中。正是因為他的這種優(yōu)勢，數(shù)字三維全景已經(jīng)開始被應用到數(shù)字三維校園、網(wǎng)絡三維業(yè)務、醫(yī)療、航空、房地產(chǎn)、旅游風光等領域。而球面全景圖相對其他幾種模型更符合人們的觀察習慣，具有更好的視覺效果，所以本文重點對球面全景圖的生成技術進行了研究。 本文系統(tǒng)的研究了全景圖生成技術中的幾個關鍵技術，在理論研究的同時，還與云南財經(jīng)大學檔案館的數(shù)字化建設相結合，完成了云南財經(jīng)大學校史館的三維全景系統(tǒng)制作，通過實踐，對論文中虛擬全景技術的現(xiàn)實意義、關鍵技術等相關研究內(nèi)容有了更深層理解。 首先，本文結合國內(nèi)外虛擬現(xiàn)實的發(fā)展研究狀況，介紹了全景技術的基本概念及其優(yōu)勢。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，在比較各自優(yōu)缺點之后，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，包括圖像采集中設備的選擇、拍攝注意事項、圖像預處理、圖像拼接、融合、球面反投影算法、后期制作等相關步驟中的一些基礎知識，并重點對圖像的拼接和融合算法進行了深入研究，在保留先前算法優(yōu)點的基礎上對之進行了改進，通過實驗證明，改進后的算法比改進前擁有更好的拼接融合質(zhì)量。最后，與云南財經(jīng)大學校史館的三維全景制作相結合，將論文中研究的全景制作技術得到了應用，，通過實踐，使理論知識的研究得到更進一步的理解，做到了理論與實踐相結合。
[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.
【學位授予單位】：云南財經(jīng)大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TP391.41;TP391.9

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本文編號：1722770