3D Reconstruction of 1800s Greek Historic Building Using Photogrammetry
#Photogrammetry is a widely used #technique for acquiring reliable information and #measurements regarding natural or artificial objects through the recording, measuring, and interpreting of #photographic images. It has significantly evolved with advances in photography and aerial photography and is widely used for mapping large areas and three-dimensional reconstruction.
It can serve as an absolute tool for capturing existing #information, whether it pertains to a piece of land or a building of any use. The specific application of photogrammetry chosen is three-dimensional reconstruction, which involves the use of software to create #digital 3D models from a series of photos or videos.
On a recent trip with my colleague Dimitrios Tsironis we attempted to capture the shell of the National Bank of Greece building in #Kyparissia on Eleftheriou Venizelou Street.
The process followed is as follows:
#Data Collection: Taking multiple images from different angles. (A total of 3200 photos)
Matching: Identifying common points in the images.
Shape Recovery: Calculating the three-dimensional #coordinates of the common points.
Modeling: Creating the final 3D model using the calculated points.
In this #process, and for its implementation, we used a DJI Mavic Air 2 #drone to capture the internal and external views of the building as well as its floor plan.
Details of windows and other openings were captured using the same method with a #camera Canon Inc. EOS R- (Lens) Tokina USA 11-16mm F2.8 RF). Approximately 500 photos were taken per opening.
The #software used for the composition of the 3D model is Capturing Reality.
#Photogrammetry is an extremely useful technique for obtaining reliable data regarding the condition and structural integrity of constructions, contributing to the reduction of repair and maintenance costs. The use of innovative "smart" applications of photogrammetry, such as three-dimensional reconstruction, is becoming increasingly important in the field of mapping, as it allows us to easily extract measurable information for #constructions that are not easily mapped using common methods.
The specific application of photogrammetry for capturing the mentioned building demonstrates the utility and effectiveness of this technique. The detailed #recording of the #building through photogrammetry can be utilized for its digital #representation and #documentation, as well as for #planning #future #maintenance or #renovation interventions.
