Automatic Planning Of Character Interaction In Mobilie 3D Animation System

The technique of the Full-Life Cycle Automatic Animation Generation was put forward by Lu Ruqian who is an academician of Chinese Academy of Sciences in the nineties of last century.Its underlying graphics technology as the support,the upper is the artificial intelligence technology and the combination of film art in the areas of knowledge,its goal is to Chinese story to restricted natural language as input,through a series of computer processing,the resulting visual 3 d animation correspond to the content of the story.With the rapid development of information and communication technology,in 2008,zhang songmao,a researcher of the Chinese academy of sciences,proposed the application of this technology to mobile phone SMS,and designed and developed the 3D animation automatic generation system for mobile phones.The system is dedicated to automatically generating the technology through animation,and automatically generates the corresponding 3D animation and sends it to the receiver according to the specific content of the sending text message.At present,the system has built four parts,including SMS information extraction,plot qualitative planning,quantitative calculation and network rendering.In film and animation,animation role as actors in the scene,is the soul of the works with the core,animation character's actions,language expression and emotion expression for animation theme and content have a vital role.In view of the present in the system only can add a single virtual characters,the transformation of a fixed action to collect data and motion editing data processing and character cannot interact between motion planning,this paper puts forward the virtual character interaction motion planning is added to the cell phone automatically generate 3D animation system,make the computer-generated animation theme and the narrative is more excellent in performance,animation generated more varied.The main work of this paper includes:Firstly,an interactive motion planning system based on ontology library is proposed and implemented.Character interaction motion planning is automatically generated based on the knowledge base,therefore according to the actual needs of the system and the characteristics of the action itself,we proposed the semantic web technology and the method of three layer recognition based on motion classifying interactive action,establishing interactive action library,design interactive action as well as the specific instances,and defines the instance of properties and related themes and templates.Qualitative planning is based on knowledge base class' s attributes and relations in line with the plot plan for motion planning as a result,in the interactive action library and model library of ontology,on the basis of template matching according to the information extraction to the topic or suitable for the interaction of the data,virtual characters perform interactive action time and sequence planning,determine whether the interaction action need interactive content to complete interactive action,finally combining animation scene information,will have an interactive action of information in the data written to the scene.Secondly,the interactive motion quantitative calculation system is designed and implemented.This paper adopted data format for fang binxing,we put forward the movement of data precision and reduce the storage of curve cutting data optimization method of interactive action,action data file size decreased by 40% after optimization,the optimized action file loading time cut in half.Quantitative calculation of interactive movement mainly includes three parts,the first part is the character of initial position calculation module,we propose a division method to select the initial position,the characters towards divided into two categories,single direction positioning and people toward the orientation to recognize;The second part is the character path calculation module,we adopt hierarchical identification method on both interaction,determine the motion interaction stage and interested in bone point location distribution characters,by using calculation method,based on the kinematics of the bone data calculate character skeleton coordinates and adopt the method of set point coordinate calculation generated path characters,to generate the motion path of collision detection method based on discrete points;The third part is the interactive path calculation module,according to the different motion form of the interaction,respectively using both static binding,and dynamic binding method,to determine the interaction and interactive content path will be generated and binding,and the characters to generate complete interactive action.In order to verify the effect of the interactive action of characters,this paper designs the experiment of validity,diversity and animation.The experimental data is the text message of the test on July 1,2017,solstice,April 19,2018,with a total of 543 valid SMS messages.In interactive movement effectiveness experiment,generate animation involves the interaction of motion planning(55.68%),are planning to calculate success,planning calculation including the initial position of characters planning,path planning,interactive content planning,etc.;In the interactive sports diversity experiment,for the same text message,the result of more than 20 different action combinations was 83.33%,and the action generation was diverse.In the experiment,the appreciation of the animation in the animation of 20 messages generated a 10-point scale score questionnaire form,in the information extraction system performance under the condition of unstable influence the resulting animation effect,through interaction of motion planning won six points above the average grades of animation,suggests that this paper improved the system SMS automatic generating system of 3 d animation expression effect.