The Research And Implementation Of Augmented Reality Application Platform Based On Artoolkit

Along with In-depth studies of the theory of graphics, and the development ofhardware, people have grown dissatisfied with the simple use of computer to simulatethe real environment, and they hope to get stronger sense of immersive. Theintroduction of the augmented-reality technology has given people new visualperception, it combine the real world with the virtual world ideally in front of people,and build a new interactive environment. The new interaction represent the nextdevelopment direction of human-computer interaction. Right now, theaugmented-reality technology has been used in medical, construction, military,entertainment, industrial manufacturing and other fields, Besides that, a lot ofsoftware are developed which based on augmented-reality, and augmented-realitytechnology is also studied by universities and research institutions around the world, ithas become a important area of research.Because of involving many kinds of discipline or filed, the augmented realityapplication platform still has difficulty in developing even if the theories aboutaugmented reality have further development. It includes the construction of platformarchitecture,data organization, rendering the fidelity, file compatibility and so on. Inaddition, the choice of development tools is also be concerned.In order to solve the problems and simplify the difficulty of the development ofaugmented reality platform, the paper based on four aspects which are architecture,data, rendering and application wants to design the augmented reality platform whichis supported by three-dimensional model of the data organization and scheduling, andas a mean of a high sense of immersion fusion. The platform is tested by actualprojects. The principal contents and achievement of this dissertation are summarizedas follows:(1)The whole architecture of augmented reality application platformThis dissertation propose the architecture of augmented reality applicationplatform based ARToolKit and OpenGL which are the core of the platform. throughthe In-depth studies of ARToolKit’s development process, this paper take advantageof the hierarchical design principles and the platform can be maintained easily in thelatter function.(2) The Organization and Scheduling of3D model dataIn order to facilitate the maintenance of the scene, the paper introduces themechanisms of database. The platform takes advantage of database to store scene dataand it improves reusability of data. The algorithm’s proposal which based on chunk ofstoring strategy is proposed to reduce the space of scene data. The mixed indexstructure based on tree index and Grid index increased data retrieval capabilities, andreduce the loss of the platform significantly to retrieve the model data.(3) High fidelity of occlusion identificationThis paper combined with Alpha channel technology and character of soft superimposed technology to rich the effect and content of Video. It improves thespeed of the camera’s tracking and positioning through improving the actual situationmapping algorithm. Based on witted illumination model, a new algorithm is proposed.Particle system is introduced based on MagicParticles. By using the above method,the platform realizes high fidelity of occlusion identification.(4) The practical applicationRelying on Sinopec Safety Engineering Institute’s3D model and open subject ofthe project, the paper illustrates gas station fire accident to simulate the application fortesting the platform.