Abstract: Grouting projects are characterized by concealment and professionalism. To improve grouting quality, consultation and other methods are often adopted for grouting collaborative decision-making. However, the current consultation approach uses 2D drawings or 3D virtual scenes for collaborative analysis and lacks the real spatial dimension for the depth distance of objects, thus suffering poor immersed interaction and untimely decision information sharing. To solve these problems, this paper develops a visualization method for grouting collaborative decision-making by applying augmented reality technology. Based on the grouting 3D information model and visual inertial odometer technology, a fusion of virtual models and real scenes together with immersive interactive analysis is realized. We realize 3D immersive visual sharing of grouting collaborative decision information via adopting a state synchronization method based on cloud communication, the anchor point transfer method, and the enhanced image recognition technology of Vuforia. The results of engineering case analysis show our method can realize immersive interactive query about grouting decision information and cross-regional collaborative decision, proving a new effective approach to grouting control.

Key words: grouting, collaborative decision-making, augmented reality, cloud communication, immersive visualization