Animation display method and system for digital cities

Abstract

The invention discloses an animation display method and system for digital cities, including: acquiring 3D position data of all buildings and roads in the animation display, and expressing the initial coordinate value of each geographical element using the WGS84 coordinate system; if the offset calculation result exceeds a preset threshold, performing inverse conversion on the offset calculation result to obtain the corrected 3D position coordinates under the WGS84 coordinate system; establishing a geographical mapping relationship according to the corrected 3D position coordinates, and mapping the dynamic evolution data of all buildings and roads into a unified coordinate system; determining the coordinate change trajectory of each time point in the animation frame through the geographical mapping relationship, and obtaining the continuous correction value of position deviation during the dynamic evolution process; superimposing the continuous correction value using the coordinate conversion result to generate accurately aligned 3D spatial model data for animation rendering; outputting the animation display content to realize the accurate alignment between geographical positions and real urban information.