Tips for extracting 3D models efficiently from point clouds
Using Scan to BIM to obtain a 3D model from the point cloud may seem like a simple process, but it hides numerous pitfalls, especially if you do not follow the right advice.
Let's see what are the tips to extract functional 3D models from the point cloud and optimize the processes.
Scan to BIM and the point cloud
Being able to extrapolate a 3D model starting from the point cloud This means no longer having to create a 3D model of the work from scratch, making the procedures simpler and faster.
This is possible through the Scan to BIM methodology, which allows you to create a 3D version of the work As Built, containing all the information relating to the project and its life.
To do this, you need to have BIM software available, capable of recognizing the elements present in the point cloud and converting them into three-dimensional objects complete with all the information.
How to extract a quality 3D model from the point cloud
Extracting a 3D model from a point cloud can be a source of pitfalls right from the start of data collection. How can you streamline the process and get quality 3D models?
Starting from an effectively carried out survey
The first step to obtain a quality 3D model starting from the point cloud is to create a good laser scanner survey, with quality equipment and capable technical staff.
In this way the survey will be faster, more complete and above all easier to process and transform into a point cloud.
Having the right tools available
Once the survey has been completed, the cloud can be processed using point cloud management software.
As we know, the cloud after the survey can be easily implemented and modified, to create a model with all the necessary data.
To obtain a digital model based on the point cloud, latest generation software is needed, which allows you to:
- Get the 3D model quickly and in a few steps;
- Have a detailed and accurate model;
- Avoid wasting time on site inspections because the point cloud always serves as a reference for the 3D model.
The advice is to use these tools intelligently, avoiding automating everything. It is better to prefer semi-automatic tools, which allow manual changes to process data, thus saving time and limiting the margins of error of automation.
Select only the necessary data
Very often it is mistakenly thought that the more data is inserted into a 3D model, the more valid and efficient it becomes. The reality is different, in fact not all the data collected is always necessary, but above all collecting a large amount of data when it is not necessary also implies an increase in the time and costs of scanning
The advice, starting from the survey phase, is to collect only the data you need, or those necessary for the level of detail agreed with the client. This is essential for:
- Respect the customer's needs;
- Reduce scanning times;
- Speed up the process of importing data into software;
- Speed up model creation.
Not only that, collecting and selecting only the necessary data allows you to choose the right level of detail needed for the model and avoid overloading the file excessively.
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