Abstract: As one of the 3D front-end visualization frameworks with excellent performance, Cesium has a corresponding pnts tile format for displaying point cloud data.With the continuous expansion of LiDAR point cloud acquisition methods and application requirements, there is a huge demand for a more complete display of LiDAR point clouds at the front-end. The industry relies heavily on the data conversion method from LiDAR point clouds to pnts tiles. The conversion of simple attributes such as point cloud coordinates and colors limits the direct application of point cloud algorithms involving LiDAR point cloud scanning angle attributes in the front-end. This paper focuses on the preservation of the scanning angle attributes of LiDAR point cloud in pnts tiles, proposes solutions and completes the conversion algorithm research, obtains pnts tiles mounted with LiDAR point cloud scanning angle attributes, and makes corresponding adaptations to the algorithm of important attributes affecting its loading performance and the strategy of LOD organization and scheduling. The final pnts tile meets the official loading requirements of Cesium, and can realize the direct application of the point cloud algorithm in the front-end that requires the participation of scanning angle attributes.

Key words: Cesium, pnts tile, LiDAR, scanning angle