Introduction to Point Clouds surveys: What Are They and How Do They Work?
Explore point clouds in modern surveying and 3D modeling. Learn their generation, types, and applications for accurate physical space representations.
Neptune, God of the waters and the seas, is represented in a fountain that bears his name in Monterrey, NL, Mexico, a sculpture located in the macroplaza opposite the Nuevo León government palace. And it was replicated thanks to the use of 3D laser scanning and photogrammetry. Know the importance of 3D digitization as a great alternative to preserve all those works or statues in the world that go through deterioration or a section of the statue presents accidental destruction.
Although the drought in Nuevo León has brought multiple inconveniences and difficulties for its inhabitants, it is also true that it has opened up possibilities to pay special attention to the current state of those monuments that represent the city of Monterrey.
Supporting the experience of people or travelers who make a trip to Nuevo León to observe the city's architecture with the lighthouse of commerce, attractions and a monument such as the Neptune fountain.
Discover throughout this article how 3D laser scanning allows the preservation of monuments and historical buildings, and if you want to know about the subject, consult the article related to Laser Scanning - The Future Is Here
You may not know yet that this work by Luis Sanguino is also called the Fountain of Life. It was a symbol for the place in the region's center, elaborated and inaugurated 38 years ago to commemorate the hydraulic plan created to supply water to Monterrey.
When it was newly inaugurated, it caused great controversy among the inhabitants. Since they questioned why the author had chosen to use a character from Greek mythology and not Tlaloc, the Aztec god of water and rain, this iconic fountain was accepted as time passed. Today it is one of the most emblematic places in this great city.
Do you remember what happened in 2009 in Paris? Notre Dame Cathedral went up in flames, thus losing its central tower and part of its roof. However, less than a week after the incident, an expert team in the conservation and restoration of historical monuments assessed the magnitude of the damage through 3D mapping.
It was possible thanks to the use of three-dimensional laser scanners, which were responsible for quickly and accurately collecting all the information and data necessary to carry out the reconstruction that would facilitate the options to consider and activities for an architect or artist.
Are you interested in knowing how 3D space mapping works? Discover all the details in our article "3D scanning pricing in 2022".
Unlike traditional methods, 3D mapping allows extensive heritage features to be scanned, buildings, monuments, fountains, churches, etc., in a few hours or days. But how exactly does it work?
Step 1
A laser scanner is placed on a tripod; this begins to do its job by means of what is known as sweeping, which includes everything within its field of vision.
Step 2
This sweep emits pulses responsible for touching various surfaces recorded as points, also known as a point cloud. These are used to obtain a three-dimensional image of the space being scanned.
Step 3
To obtain complete information on the entire space, the scanner is relocated to generate new point clouds.
Step 4
As a result of the previous steps, and with the help of specific software, a unique digital geometric model is obtained.
Do you remember that at the beginning, we told you about the Fountain of Neptune? We wanted to take the positive side out of the current situation by carrying out the 3D digitization of this work.
The process allowed us to know their distances and diameters with great precision and to avoid possible disasters, eliminating the lost time, high costs, or stress repairs entail.
Finally, 3D scanning and photogrammetry allow us to document, analyze and make decisions with much better precision, key aspects of preserving the heritage and history of our cities.
Sources
https://revistapesquisa.fapesp.br/es/digitalizacion-de-monumentos/