With the maturity of the most advanced technology and virtual reality, the application of digital media technology in various fields has become more and more extensive. Digital media technology has greatly promoted the development of all classes of society. Therefore, how to develop digital media technology applications has become a major issue. This article aims to study the digital media application technology of mobile terminals based on edge computing and virtual reality. In this paper, we use edge computing and virtual reality methods to study the digital media application technology of mobile terminals. We used the SD-CEN architecture and FWA in edge computing to conduct simulation experiments and compared the delay time performance of the FWA with that of the PSO-CO algorithm, WRR algorithm, and Pick-KX algorithm. The results of this paper show that it can effectively reduce the response delay of real-time face recognition services and improve user experience. Compared with the traditional cloud computing architecture and a single MEC device, the SD-CEN network architecture based on FWA strategy has more advantages. The latency of the FWA is increased by 61%, 46%, and 17%, respectively, compared with that of the WRR, Pick-KX, and PSO-CO algorithms.

In recent years, with the rapid development of computer technology, virtual reality products showing a flourishing trend. It brings people into an immersive, interactive virtual reality world, we will apply it to the desig of students’s art exhibition App. Art college students will create many valuable works of art. Under the situation of the country’s vigorous promotion of innovation and entrepreneurship, we design a VR art exhibition marketing app to promote and sell students’ excellent art works through online display, which can motivate students to create and collaborate independently, improve their professional skills, and enable They engage with society as early as possible to increase employment. The online exhibition sales app for college students’ art uses network technology to show the functions of the real exhibition hall in the form of digital virtual reality. It uses the information structure of the Internet, and combines the work and business of traditional physical exhibition halls with marketing activities on the Internet to build the information exchange bridge required by exhibition halls. This app uses Unity 3D technology in conjunction with HTC Vive devices to design and implement a virtual pavilion. The model was created using 3DS MAX software, the material texture was drawn using Substance Painter software, and the interface UI was produced using Adobe Photoshop software to ensure a high degree of simulation of the virtual pavilion[1].

In the operation of urban rail stations, joint emergency drills for different types of work are an important way to ensure the safe operation of urban rail stations. However, due to the lack of equipment and means, at present, the joint emergency drills for urban rail stations are mostly a single-person system. Based on the current status of emergency joint drills in urban rail stations, this article proposes a virtual reality-based multi-person collaborative urban rail station emergency simulation system. Construct a large-scale virtual reality scene through the viewpoint-related LOD quadtree, and use socket technology to achieve multiplayer online interaction. Finally, all models are jointly driven by Unity3d in the simulation scene. An immersive, multi-industry coordinated urban rail station emergency drill simulation system was constructed. Providing a simulation training environment similar to the actual situation for emergency trains in urban rail stations can greatly improve the shortcomings of difficult and inefficient implementation of the organization, and change the difficult situation of insufficient emergency drills for multiple types of rail stations.

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