3D modelling of Heritage sites for its conservation and enhancing Ecotourism: An application of Terrestrial LiDAR Technology

Abstract

Terrestrial Light Detection and Ranging (LiDAR) is a land-based laser scanner which, combined with a highly
accurate differential GPS, enables us to produce 3D computer models of the buildings, captured area or any laser scanned
structured. Terrestrial laser scanning (TLS) is now frequently used in earth sciences to achieve greater precision and
completeness in surveying natural environments. It is known that the preservation of cultural heritage can help to educate
younger generation through the history. It also helps in conservation and documentation of the natural beauty of the
natural heritage. This paper comprises the application of Terrestrial LiDAR data in conservation of Heritage sites and
enhancing Ecotourism. For the present study Laser scanning of Alambagh gate, Lucknow has been done. The point cloud
data is captured by Terrestrial LiDAR Scanner with the help of Differential GPS. The TLS scanner used for the purpose
is 3D laser scanner P40. Later on the data is processed in Cyclone software. This paper also describe the step by step
collection of the point cloud data and its processing in the Cyclone software. As datasets provided by the Terrestrial
LiDAR system are denser and bigger it implies that the accuracy achieved by the LiDAR dataset is of the order 0.0001m.
Thus, the defects in the structure could be easily identify with the help of TLS. TLS will provide a one-time collection of
the data for numerous applications which my help in 3D modelling.