Automatic Planning Of Scene Materials In 3D Animation Of Mobile Phone

The automatic generation technology of the whole process computer aided animation was first put forward by the academician Lu Ruqian of the Institute of Mathematics of Chinese Academy of Sciences in the world in the 1990 s,and the technology of computer animation was put forward for the first time in the world.The new animation technology which combines multimedia technology and artificial intelligence theory can transform the limited Chinese story into computer animation which matches the content of the story through computer processing.With the rapid development of mobile network in the 21 st century,Zhang Songmao,a researcher of the Chinese Academy of Sciences,proposed in 2008 to apply the whole process computer-aided animation automatic generation technology to mobile Chinese text messages,and designed and realized the mobile phone short message 3D.Automatic animation generation system.Mobile phone 3D animation automatic generation system will send the Chinese natural language SMS information extraction,animation qualitative planning,animation quantitative calculation and network rendering after four steps.Convert into a 3D animation video file and send it to the SMS receiver.Material refers to the color,texture,reflection and refraction of light and other related properties of each model after rendering in a 3D animation scene.Material is like the packaging of animation works,a unique material design can make a simple animation scene splendor.Digital three-dimensional animation films use "color narration" to infect people,set the artistic atmosphere to create a perfect virtual space,as a bridge to communicate with the audience,and lay the foundation for the understanding of the story and the preparation of the plot.As an important visual element in digital stereoscopic animation film,material is a key component of Color narration.It is an important way to depict characters and create scene atmosphere.It plays an important role in enhancing the expressive force of animation,enriching the forms of animation expression,improving the realism of movies and enhancing the value of animation appreciation.In the design of animation scene,especially the three-dimensional animation scene,the material is very important to reflect the reality of the whole scene.The research work of this paper is to realize the automatic planning of scene material in the automatic generation system of mobile phone 3D animation,which mainly includes the following two parts:Firstly,a library of animation materials is constructed,and the qualitative planning of animation scene materials is designed and realized.Based on the system knowledge base which has successfully supported the 3D animation automatic generation system running,this paper first established a primitive library to depict the nature of animation material,including animation material composition and animation scene shader.The animation material composition class defines the basic features ofthe material and the scene material style,including six subclasses of material type,base material,color,texture,picture,and scene style.We define the instance in each subclass and the properties of the instance.Scene shader inclusion chamber The interior scene and the outdoor scene are two subclasses,each subclass defines the shader instances of the indoor and outdoor animation scenes existing in the current animation library respectively.Based on the material library,the material qualitative planning system is based on the content of the SMS sent by the user.After the information extraction module,the subject and various template information contained in the SMS are obtained.The qualitative description of the material is obtained through the relationship between the instance,the theme and the template defined in the material library.Secondly,the quantitative calculation of animation scene material is designed and implemented.The material quantitative calculation system is the concrete realization of the qualitative description of the material,including: simple model single material calculation,simple model multi-material calculation,complex model material calculation,and material ball calculation and so on.In order to enhance the diversity of texture maps,we introduce a texture synthesis method based on texture classifiers.Bilinear convolution neural network model is used to train texture classifiers,and texture classifiers and texture attributes are used to edit images.The image texture processing is carried out,so that the single image has different texture representation under different conditions,and the material is enhanced.Furthermore,we propose to add the model types in animation system as the attention of texture image classification to bilinear convolution neural network model,and the experimental results show that the accuracy of texture image classification is improved.In order to verify the effect of automatic material planning of scene,this paper designs the feasibility experiment of material planning,the experiment of diversity of material planning,and the experiment of animation viewing aiming at the open Chinese natural language short message of animation system test.The experimental data are 697 text messages received by the system from May 10,2018 to January 30,2019.In the feasibility experiment of material planning,96.57% of the short messages successfully completed the material planning;In the diversity experiment of material planning,60 short messages were randomly selected from the short messages that completed the material planning successfully,each message was run 10 times,and the materials obtained from 600 short messages were counted.As a result,81.7% of SMS got more than 5 kinds of different material effects.In the animation viewing experiment,20 short message generated animations were randomly selected for questionnaire survey."I think the effect of scene material expresses the content of SMS," the average score is 7.8.I think the average score for animation and text message content is 7.0,and the average score for "I think the material is beautiful" is6.4.It is shown that the material planning method realized in this paper meets the requirements of the automatic generation system of mobile phone 3D animation to automatically change the material of the scene.In this paper,an automatic generation method of animation scene material based on animation material library is proposed.The automatic planning of scene material is successfully carried out in the mobile phone 3D animation automatic generation system,and its effectiveness is verified in the open experiment of Chinese text message.Further work includes the processing of the relationship between materials and lighting and the design of active learning system for scene materials.