Research On Dynamic Visualization Methods Of High-resolution Ocean Scalar Dat

In recent years,with the rapid development of display equipment,the demand for large screen display of high-resolution data visualization is increasing,and the ocean observation data visualization system gradually tends to use large screen for interactive display.At the same time,with the continuous development of ocean observation technology,the spatial-temporal resolution of observation data is continuously improved,which provides data support for high-resolution data visualization.The traditional global view ocean data visualization mainly adopts LOD algorithm: rendering low-resolution data in the global view and high-resolution data in the local view.Due to the fuzzy display effect of low resolution data visualization on the large screen,the algorithm is not suitable for the visual display of global view in the current large screen environment.Therefore,the real-time processing and rendering of high-resolution ocean scalar data from different data sources can improve the real-time performance of data rendering;Realize global and efficient 3D real-time dynamic visualization from a global perspective;Liberate the screen size,meet the needs of large screen visualization,and provide clearer and accurate ocean change information.These are the main research objectives of this paper.Based on this goal,aiming at the current research status and the shortcomings of existing research,this paper proposes a dynamic visualization method of marine scalar field data based on Web.A dynamic visualization system of ocean scalar field for high-resolution large screen interactive display is designed and implemented.The system uses the research results of human eye color difference recognition to determine the time-varying threshold and screen the changing data,so as to reduce the amount of time-varying rendering data.With the help of GPU,the data and rendering commands can be updated on demand to improve the rendering speed.Using the distributed framework,multiple servers carry out data preprocessing and data file updating according to the data visualization method designed in this paper,organize time-varying data in different longitude and latitude ranges,and use Web Socket protocol to realize real-time data push.MQTT protocol is used to realize the communication connection between mobile terminal and large screen,and the interactive operation of large screen visualization is realized with the help of mobile terminal.Finally,this paper tests the rendering performance of the developed system with the help of various types of ocean scalar data.After testing,the data visualization method proposed in this paper shortens the time-varying rendering time and enhances the real-time performance of data rendering on the premise of ensuring the visualization effect.It can meet the needs of high real-time application scenarios and help users quickly grasp the law of data change.The system designed based on this method solves the limitation of data resolution on screen size.It avoids the frequent data interaction between the front and back ends,so as to adapt to different network environments.The multi-source data visualization provided by it helps users master the change law of different types of data,provides information support for subsequent scientific research and military activities,helps the development of national marine informatization,and helps the country scientifically develop and utilize marine resources.