The Representation And Conversion System Of Dynamic Scene

In recent years,with the rapid development of computer technology and graphics,animation has undergone revolutionary changes.Unlike traditional manual production,today's animation has been revolutionized from its production method to its concept.Among them,the development of 3D animation is in full swing,because of its high efficiency,precision and more expressive features,it is favored by film and television production.Nowadays,3D animation has become an important way of entertainment and leisure in people's daily life,and it has been more and more widely used in media production such as movies.The presentation of a wonderful film and television animation work requires two key steps,modeling and rendering.The job source of the rendering engine is the established model data.In order to improve the efficiency of modeling and rendering,it is important to formulate uniform industrial standards during the long-term development of 3D technology.A good film and television animation standard can realize the data sharing of all participants on the basis of the same model during the entire modeling life cycle,promote the communication and participation of the participants,thereby reducing the damage caused by information asymmetry and improving Efficiency.Therefore,it is very important to establish a set of own representation standards for film and television animation.At present,three-dimensional animation is developing in a more realistic direction,with details being continuously enriched and the scale being continuously expanded.Therefore,the amount of data has increased geometrically and can even reach TB level.The huge amount of 3D animation data places higher requirements on network bandwidth and local storage resources,so it is important to find a storage method that can save animation effects and save storage resources.This subject comes from the national key project "Key technologies for high-realism parallel rendering of digital media and high-performance application software systems".This article mainly develops a set of scene representation specifications for film and television animation to improve modeling efficiency and reduce the disk storage burden of scenes.In addition,the rendering engine has specific requirements for the organization of three-dimensional scene data.Before rendering the scene data,the data needs to be converted into a format that the rendering engine can recognize.This article develops an Open3ds scene representation specification for film and television animation.The scene is expressed by a lens,divided into static data and dynamic data,and organized using a unified scene framework.The scene uses XML text format.The static data uses the geometry file obj,and the dynamic data uses the animation file abc.The obj and abc files are linked to the xml file to realize the expression of the scene.The 3D modeling software used in this article is the currently popular Maya software.The rendering engine used is the Rwing rendering engine independently developed by the laboratory.The scene created in Maya is exported into an xml text file using a specific export tool according to the formulated scene representation specifications.Because the rendering engine cannot directly read the abc file,before rendering,the data needs to be converted,the geometric information of a certain frame is extracted from the dynamic data abc to generate an obj file,and the obj file is linked to the xml file To achieve the rendering of dynamic scenes.