Table 1. Performance comparison of different LOD levels showing vertex count, file size, memory usage, and frame rate (FPS) for the proposed WebGL-based glTF viewer.

LOD	Vertices	File size (MB)	Memory usage (MB)	FPS
0	1,093,871	138	47.8	14.4
1	595,395	101	25.0	29.3
2	152,395	69	5.5	304.9
3	91,920	65	3.2	666.7
4	50,179	62	1.4	568.2