Research On Aerial Image Flash 360 Panorama Technology

With the development of society and the improvement of people's living standard,the traditional way of human-computer interaction has been unable to meet people's spiritual needs.More convenient and more intuitive way of human-computer interaction is coming into people's living life gradually,that is virtual reality technology?VR?.In virtual reality system,rendering virtual scene is a crucial part.Geometry-Base Rendering needs to be modeled based on a large amount of workload and high requirement of computer.But Image-Base Rendering directly collect images from the real scene to build virtual scene,which is easy to implement and suitable for network to transmit because of the small file.Panorama technology is the most common method of virtual scene rendering at present.Panorama has the advantages of authenticity,interactivity and economic.The traditional way of collecting virtual scene images is limited to the ground,which unable to view the original global scene,UAV is undoubtedly the best way to solve the problem.In this study,first we collect images in the air by controlling DJI-Innovations Spreading Wings S1000 UAV.Then using OpenCV relevant algorithms stitch images.And the Adobe Flash Professional CS6,which was equipped with Away3 D,was used as the development platform.Finally we get a virtual scene which has horizontal 360 degree and vertical 180 degree visual range.Based on the virtual scene,users can feel like in the real scene and feel "the perspective of God".This paper mainly studies the construction of Flash3 D virtual scene based on aerial panorama,and systematically explains several key technologies involved in the construction of virtual scene,and proposing a complete way about how to build a virtual scene which taking Qianfo Mountain campus of Shandong Normal University as an object,based on the theory and the practice combines.The content of this research mainly includes the following several aspects: First of all,this paper analyzes several technologies about building virtual scene which involves virtual reality technology,panorama technology and Flash3 D technology and their histories and developments.Secondly,the paper introduces the principle and the application of panorama technology.Itsummarizes three kinds of projection methods of panorama technology.By analyzing and comparing the advantages and disadvantages of these three methods,the spherical projection model is chosen to construct the panorama and described the principle of spherical projection.Then,this paper introduces the process of constructing virtual scene,including image acquisition,image stitching,virtual scene construction.These contents are distributed in each chapter and are described in detail.For the image acquisition step,this paper designs a way of shooting images in the air by using DJI-Innovations Spreading Wings S1000 UAV with DJI-Innovations Zenmuse Z15₅D camera gimbals and Canon 5D camera so that we can easily achieve aerial operation and obtain images by remote control on the ground.For the image stitching step,this paper analyzes the principle of three steps: feature point detection,feature point matching,image fusion and splicing.It introduces two common algorithms of matching and stitching images,there are based on scale-invariant feature transform?SIFT?and speed up robust features?SURF?,thus comparing two algorithms and drawing a conclusion through experiments.Then using OpenCV relevant algorithms stitch images.For the virtual scene construction step,this paper analyzes the theoretical basis of Flash3 D,and designs a way to build virtual scene based on ActionScript3.0 in Away3 D platform.Finally,the virtual campus of Shandong Normal University is published to the network for users to view.On the basis of analyzing the theory of constructing virtual scene process,this paper aiming at Shandong Normal University designs a complete,feasible and effective method to build virtual scene by aerial photography + panorama + Flash3 D technology.Now the virtual reality is developing rapidly,and the method has strong practical and realistic significance.