虛擬場景的3D顯示控制關(guān)鍵技術(shù)研究
發(fā)布時間：2018-12-20 05:45
【摘要】：目前,很多基于三維建模與仿真技術(shù)的三維虛擬場景都是在二維平面進(jìn)行展示。借助現(xiàn)有的3D顯示設(shè)備及相關(guān)軟件控制方法,實現(xiàn)虛擬場景的3D顯示,對三維虛擬仿真及3D顯示技術(shù)的應(yīng)用與發(fā)展都有著重要的意義。本文基于OpenSceneGraph(OSG)渲染虛擬場景的控制技術(shù)及其算法,研究了實現(xiàn)虛擬場景3D顯示所需的立體拍攝、交互控制、跟蹤控制等一系列控制方法,實現(xiàn)了虛擬場景多種3D格式輸出及控制,并在相應(yīng)系統(tǒng)進(jìn)行顯示。論文的主要工作及成果包括:1.通過深入研究OSG編程方法以及OSG中相機(jī)矩陣的設(shè)置方法,實現(xiàn)了對虛擬場景的離軸拍攝控制。與其他拍攝方法相比,該方法具有公共場景區(qū)域大,并且沒有梯形失真的特點。2.在離軸拍攝基礎(chǔ)上,利用地面投影實現(xiàn)了樓盤等場景在地面上的3D顯示。通過引入跟蹤技術(shù),實時控制虛擬相機(jī),解決了由于觀看者位置移動導(dǎo)致的三維場景畸變問題。3.實現(xiàn)了虛擬場景2D+D格式的輸出,通過研究OpenGL投影過程以及輸出的深度圖像中場景深度與近平面、遠(yuǎn)平面的關(guān)系,實現(xiàn)了對輸出深度圖像中場景深度的控制。4.實現(xiàn)了正面投影系統(tǒng)的交互展示,利用離軸拍攝技術(shù)獲取虛擬場景30路視差內(nèi)容,并實現(xiàn)了該系統(tǒng)的同步控制、梯形失真校正,利用OSG交互控制方法改變立體相機(jī)的參數(shù),實現(xiàn)了對場景視差的調(diào)整。
[Abstract]:At present, many 3D virtual scenes based on 3D modeling and simulation technology are displayed in two-dimensional plane. With the help of the existing 3D display equipment and related software control methods, the 3D display of virtual scene is realized, which is of great significance to the application and development of 3D virtual simulation and 3D display technology. Based on the control technology and algorithm of OpenSceneGraph (OSG) rendering virtual scene, this paper studies a series of control methods, such as stereo shooting, interactive control, tracking control and so on, which are needed to realize 3D display of virtual scene. A variety of virtual scene output and control in 3D format, and display in the corresponding system. The main work and achievements are as follows: 1. By studying the OSG programming method and the setting method of camera matrix in OSG, the off-axis shooting control of virtual scene is realized. Compared with other shooting methods, this method has the characteristics of large common scene area and no trapezoidal distortion. 2. On the basis of off-axis shooting, 3D display of buildings and other scenes on the ground is realized by using ground projection. By introducing tracking technology to control the virtual camera in real time, the problem of 3D scene distortion caused by the position movement of the viewer is solved. The output of 2D D format of virtual scene is realized. By studying the process of OpenGL projection and the relationship between the depth of scene and the near plane and far plane in the output depth image, the control of the depth of scene in the output depth image is realized. 4. The interactive display of front projection system is realized, and the 30 parallax content of virtual scene is obtained by off-axis shooting technology. The synchronization control, trapezoidal distortion correction and OSG interactive control method are used to change the parameters of stereo camera. The parallax of scene is adjusted.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TP391.9
[Abstract]:At present, many 3D virtual scenes based on 3D modeling and simulation technology are displayed in two-dimensional plane. With the help of the existing 3D display equipment and related software control methods, the 3D display of virtual scene is realized, which is of great significance to the application and development of 3D virtual simulation and 3D display technology. Based on the control technology and algorithm of OpenSceneGraph (OSG) rendering virtual scene, this paper studies a series of control methods, such as stereo shooting, interactive control, tracking control and so on, which are needed to realize 3D display of virtual scene. A variety of virtual scene output and control in 3D format, and display in the corresponding system. The main work and achievements are as follows: 1. By studying the OSG programming method and the setting method of camera matrix in OSG, the off-axis shooting control of virtual scene is realized. Compared with other shooting methods, this method has the characteristics of large common scene area and no trapezoidal distortion. 2. On the basis of off-axis shooting, 3D display of buildings and other scenes on the ground is realized by using ground projection. By introducing tracking technology to control the virtual camera in real time, the problem of 3D scene distortion caused by the position movement of the viewer is solved. The output of 2D D format of virtual scene is realized. By studying the process of OpenGL projection and the relationship between the depth of scene and the near plane and far plane in the output depth image, the control of the depth of scene in the output depth image is realized. 4. The interactive display of front projection system is realized, and the 30 parallax content of virtual scene is obtained by off-axis shooting technology. The synchronization control, trapezoidal distortion correction and OSG interactive control method are used to change the parameters of stereo camera. The parallax of scene is adjusted.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TP391.9
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