3D Laser Scan of Ancient Temple

Tech27 Systems was tasked with the 3D documentation of a 2000 year old temple, which is one of the 108 great Siva temples in the world. The temple is housed in a compound wall with an extent of 3¼ acres of land in a square shape, with a 50 feet high flag mast, rounded walls with murals and sculptures. Due to its historic importance and age, the structure was fragile, intricate and required a very careful surveying approach. Due to long term exposure to the environment, the murals and artwork had developed hairline cracks and high moisture content. No direct contact was allowed, but the surveying output required millimeter accuracy.

3D Laser Scan of Ancient Temple

Solution

Tech27 provided a turnkey solution that included laser survey, data processing, 3D modelling and 2D detail drawings as per the client’s requirement. A long range laser Scanner with a range of up to 120 meters and a 360° x 305° field of view was used. A scanning rate of 976,000 points per second and accuracy up to +/-2mm was achieved. The shape, position and spatial locations of objects are recorded by millions of points, each with a latitude, longitude and elevation coordinate. After a few days, 36 colour scans were obtained to produce a detailed, 3D data set of the entire temple. Inaccessible and dark areas posed no complications, due to the scanners self-illuminating infrared laser and remote flash control. The scanner’s compact design allowed them to work among the pillars of the temple, and the tripod ensured setup times were quick and easy. Once the scans had been aligned and cleaned, multiple software programs were used to create interactive models. Every level of detail is now viewable, from different sculpture works and even inscriptions on the inner roof pillars 360°

Outcome

Project Highlights:

  • Produced detailed 3D models and walkthroughs of the monument.
  • Inaccessible areas with poor lighting were surveyed and documented.
  • Sculptures, murals, and intricate structures were scanned to a high accuracy.
  • Structural deformations were highlighted.
  • Large datasets were optimised and made easily accessible.
  • 2D drawings of elevations, plans and sections were created.
  • Availability of as-build data decreased the number of site visits and costs.
  • Improved conservation and intervention activities.

3D Laser scanning - Sheikh Salim Chisti Tomb, Fatehpur Sikri

An ambitious project using cutting edge technology to create exceptionally accurate digital 3D Models of beautiful marble mausoleum, Sheikh Salim Chisti; and a large number of motifs. Inside has a beautiful array of impressive stone screens and the tomb is located in the centre of the main hall, which has a single semi-circular dome, the plinth is ornamented with mosaics of black and yellow marble arranged in geometric patterns. Architectural features marking the incorporation of indigenous architectural styles in the construction, in order to ensure that its fully breathtaking beauty is captured in its entirety to help in the management and conservation of the site, conditional assessment of the structure and documentation of the deformations. The heritage conservator required elevations, all floor plans, sections and also high resolution orthoimages.

Scan Details:

LOCATION: Fatehpur Sikri

ON-SITE TIME: 3 Days; 62 color scans

COMPLETION TIME: 20 working days 2 persons

FINAL PRODUCT : 3D Model, 2D data in CAD format and Orthophoto.

Solution

In early 2015, we won the project of 3D laser scanning of Sheikh Salim Chisti Tomb in Fatehpur Sikri. Tech27 provided a turnkey solution that included laser survey, data processing, 3D modelling and 2D detail drawings as per the client’s requirement. A long range laser Scanner with a range of up to 120 meters and a 360° x 305° field of view was used. A scanning rate of 976,000 points per second and accuracy up to +/-2mm was achieved. The shape, position and spatial locations of objects are recorded by millions of points, each with a latitude, longitude and elevation coordinate. The mausoleum was scanned entirety in 3 days. Single scans (a total of approximately 62 positions of scanner) were integrated into a one coordinate system and the final point cloud was used to create a full 2D inventory of the mausoleum. We plotted precise floor plans, sections with views and elevation drawings. Thanks to laser scanning we were able to collect full spatial information of this historic building. We have obtained a very high accuracy output to +/-2mm.

Outcome

Project Highlights:

  • Produced detailed 3D models and walkthroughs of the monument.
  • Inaccessible areas with poor lighting were surveyed and documented.
  • Sculptures, murals, and intricate structures were scanned to a high accuracy.
  • Structural deformations were highlighted.
  • Large datasets were optimised and made easily accessible.
  • 2D drawings of elevations, plans and sections were created.
  • Availability of as-build data decreased the number of site visits and costs.
  • Improved conservation and intervention activities.

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