How to choose the most suitable 3d laser scanner for my project?

Nowadays we constantly talk about the laser scanner used in surveying and the number of benefits it offers. But do you really know which is the right laser scanner for your project?

What is a 3d topographic scanner?

It captures the shape of three-dimensional objects with high precision and then converts it into millions of data points. The 3d scanner is commonly used in surveying, but it can also be used in many other fields like Topography, Naval Engineering, Engineering and civil works, Industrial Engineering, Chemical and petrochemical engineering, Architecture, BIM, Automotive, Heritage, Archaeology, Industrial manufacturing.

How does it work?

1. Using a beam of light, the laser scanner calculates the distance from the emitting point to the point of an object located within its trajectory range.
2. Then, using one or more rotating mirrors, the scanner hits existing points within an area of space and provides data on the distance between these points.
3. The generated point cloud contains information about the distance between the different points of the object.
Finally, depending on the desired precision and the distance to the object, several shots are often needed. To produce a 3D model, software is required to orient all shots. In other words, the laser scanner technology offered by Leica Geosystems allows you to transform a real object into a virtual one with complete accuracy.

Tips for choosing the right 3D topographic scanner according to the project

• Scalability and modularity

In some projects, the scalability and modularity of the scanner is of the utmost importance. This can make your investment profitable by expanding its applications. Some offer a range to connect different sensors like GNSS, IMU or Compas.

• Measuring distance

To obtain an excellent reality capture system you must have an ideal measurement distance. The scanner has to meet the needs of your project and offer a wide capture range up to distances exceeding one kilometer. In addition, it must be designed for a good indoor capture where distance is not an impediment.

In this aspect, the choice is determined by the needs of your project. It can be from requirements of reforms and works in environments of great distances and exteriors; In these cases you need to use any type of heavy machinery, such as graders, pavers, excavators and others.

• Level of detail

Another aspect that you should take into account when choosing the right 3D scanner is its capture capacity. There are models generated in 3D clouds that have more detail the higher the capture of points per second.

• Environmental operability

The choice of the laser capture system is influenced by the weather conditions of the place where it is going to be developed. Depending on its use, it must have resistance to dust, humidity and temperature ranges appropriate to the area. You may need it resistant to 20ºC below zero to more than 50ºC, or between 5°C to 40ºC.

Another important aspect that you should analyze is the type of scan you need. Mobile scanning can be more flexible for your project, but if you need a more exhaustive and precise one, we recommend terrestrial scanning. Also keep in mind that each has its advantages and disadvantages.

To choose the right laser scanner, you must know your project very well. Its correct use in topography gives you a sure success in your business. And, without a doubt, if you follow our advice, the decision you make will be the right one.

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