Quality elements	Mass sub-elements	Check the content
Coordinate reference system	Planar datum	Check that the model conforms to the geodetic coordinate system
	Elevation datum	Check that the model conforms to the elevation datum
	Projection	Check that the projection of the model meets the requirements
Position accuracy	Plane accuracy	Check whether the difference between the plane position of the model and the location of the physical site is exceeded
Position accuracy	Elevation accuracy	Check whether the difference between the model elevation and the physical elevation is exceeded
Model quality	Structural quality	Check the number of out-of-limit errors between the model and the point cloud
	Structural quality	Examine how well locations such as the model’s surface, building tops, and sides fit into the point cloud
	Texture quality	Check how closely the model fits the image and how closely it fits the image in all directions in a stereoscopic environment.
	Terrain quality	Check how well the model fits into the actual terrain
Logicality	Output format	Check whether the output of the output result is consistent, and whether the storage, naming, etc. are correct.
Scene effects	Status quo integrity	Check for redundancy of the model for noise, miscellaneous, miscellaneous, and so on.
	Status quo integrity	Check the number of missing model features. Including daughter wall, balcony, cat ear window and other structures.
	Scene shape	Check the aesthetic coordination of the model, including the undulating shape of the ground, the vertical bottom of the building and the vertical coordinate values.