Kathmandu Metropolitan City Exploring the Potential of LiDAR Technology to Create 3D Maps and Digital Twins

Kathmandu: Experts say LiDAR (Light Detection and Ranging) technology is suitable for gathering facts about a city’s geography, infrastructure construction, development activities, ancient structures, and other objects, services, infrastructure, and conditions.

They presented this possibility at an interactive program organized by the Information Technology Department of Kathmandu Metropolitan City on LiDAR technology and its potential use in the metropolis.

LiDAR creates micro 3D maps and digital twins using laser signals. Technology Division Chief Ashok Shrestha said the technology is used to obtain and analyze high-precision distance measurements, 3D modeling, and geomorphological details of various objects on the geographical surface, structure, and environment.

“There is a possibility that the metropolis can use the technology for tasks such as urban planning, mapping, infrastructure construction, monitoring and management of the environment and heritage areas, disaster management, and development of smart cities,” Shrestha said.

Presenting at the event, Geomatics Engineer Kabiraj Rokaya said the technology can clearly map and measure objects up to two centimeters.

“Changes in structure, location, objects and conditions can be compared through time series changes. The people who built heritage are running out. Heritage has also changed due to urban development, use of heritage, and weather. At this time, it is necessary to record the updated condition of heritage with measurements. LiDAR technology may be suitable for this,” Rokaya said.

During the event, 3D scans of the Metropolitan City Assembly Hall, Kirtipur’s Tilancho Stupa, Maitighar Mandala Chowk, Balaju Baisadhara Park, and other locations were displayed, along with digital content created from them.

Experts say the technology will be most useful for indoor mapping (structures, rooms, and facilities inside buildings), cultural heritage (height, roundness, measurement of building materials, distance between objects), infrastructure (roads, overpasses, parks, digital monitoring of buildings, emergency management), mapping pressure areas in urban development plans, and generating data for long-term planning.

This technology is used in developed countries including the United States, Japan, South Korea, and European nations. It also appears to be widely used in surveying and mapping areas such as forests and land use at the local level.

 

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