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. 2019 Oct 2;19(19):4275. doi: 10.3390/s19194275

Table 2.

Variants of the object displacement measurements. TLS: terrestrial laser scanner.

Goals
I Precise leveling of bridge spans The vertical displacements of protrusions of the main girders of the bridge
Reference measurements for TLS results
II Reflectorless precision tacheometry of controlled points The displacements of controlled point network
Reference measurements for TLS results
III Terrestrial laser scanning The displacements of the bridge determined using:
  • -

    TLS data of the controlled point network

  • -

    processing of point clouds

  • -

    processing of surface meshes