“Which scanner should I buy?”
It is one of the most common questions that arises when an engineer or a business is considering an investment in 3D scanning technology.
The discussion usually starts with equipment specifications: accuracy, range, scanning speed, point cloud size, battery life, or cost.
In practice, however, choosing the right solution does not start with the scanner itself.
It starts with the result that needs to be delivered.
Do you need a georeferenced point cloud for measurement and design? A BIM model? A quick capture of existing conditions? Or an easy-to-use digital space that colleagues, clients, and non-technical users can navigate?
The answer will largely determine which technology is best suited to the task.
There is no single scanner that is suitable for every application.
A terrestrial laser scanner, a mobile SLAM scanner, and a Matterport Pro3 can all create a 3D representation of a space.
However, they do not necessarily produce the same results, operate in the same way, or serve the same end user.
That is why a comparison based solely on accuracy, speed, or price can lead to the wrong conclusions.
The key question is:
How will the data be used after the scanning process?
Terrestrial Laser Scanning: When Geometry Is Critical
In some projects, scanning is about more than simply creating a visual record of a space.
It provides the foundation for the work of engineers, designers, and construction professionals.
For example:
- Scan-to-BIM and as-built model creation
- industrial facilities and complex geometries
- infrastructure projects
- surveying for prefabrication
- construction and deformation monitoring
- applications requiring accurate measurements and technical deliverables
In these cases, an impressive 3D model alone is not enough. The geometry needs to be accurate, complete, and suitable for the next stage of the project.
The static scanning process of a terrestrial laser scanner provides high data density, greater control over data capture, and the level of accuracy required to support demanding technical workflows.
This does not mean that every application requires the highest possible level of accuracy.
It means that when accuracy is a key project requirement, the choice of technology should not involve compromises.
SLAM Scanning: When Time in the Field Changes the Equation
In other projects, achieving the highest possible level of accuracy is not the primary concern.
It is time.
An operational hospital, a logistics warehouse, a hotel, an industrial facility where production cannot be interrupted, or a building with hundreds of different spaces all require fast and flexible data capture.
With a static scanner, capturing the entire space may require multiple scan positions and a significant amount of time in the field.
Mobile SLAM systems work differently. The operator moves through the space while the system continuously generates the point cloud and simultaneously estimates its position.
The result can be significant time savings and much faster coverage of large or complex indoor environments.
However, speed alone does not automatically make SLAM the right choice for every project.
The performance of a mobile scanning workflow is influenced by:
- the system itself and the quality of its sensors,
- the operator’s scanning path,
- proper loop closure,
- the layout and geometry of the space,
- repetitive surfaces or environmental features,
- the conditions and the way the data capture is carried out,
A SLAM scanner should not be viewed simply as a faster replacement for a terrestrial laser scanner.
It is a different tool, designed for different priorities.
For some projects, it may be the best choice. For others, the required level of accuracy or control may call for a different workflow.
Matterport Pro3: When Access to the Space Is What Really Matters
There are also many cases where a client initially asks for a point cloud, even though it may not actually be the final outcome they need.
In practice, what they may actually need is:
- to present a space to clients or partners,
- to inspect a facility remotely,
- to document existing conditions before and after work is carried out,
- to monitor the progress of a project,
- to collaborate with teams located in different locations,
- to easily locate equipment, assets, and information within a space,
In these applications, the point cloud may be a useful deliverable, but not necessarily the primary objective.
This is where Matterport addresses a different need.
Its real value lies in quickly creating a photorealistic, easy-to-navigate digital twin that can be accessed even by people who do not use CAD or specialized point cloud processing software.
A facility manager, property owner, maintenance manager, or executive may need a quick and intuitive way to access information about a space rather than a complex technical file.
Matterport, therefore, should not be viewed as a direct substitute for a terrestrial laser scanner.
They do not necessarily solve the same problem.
Neither technology is inherently better than the other. They address different needs, workflows, and users.
Five Questions to Ask Before Making a Choice
Before comparing models and technical specifications, it is worth answering five key questions.
- What needs to be delivered at the end?
A point cloud, BIM model, floor plans, technical measurements, as-built documentation, or a shareable digital model?
The deliverable should determine the technology — not the other way around.
- Who will use the data?
A surveyor, BIM engineer, or designer can work directly with point clouds and specialized software.
A facility manager, client, or non-technical team will likely need a simpler, more visual environment.
- How much accuracy does the project actually require?
Not all applications require the same level of accuracy.
The key is not always to pursue the highest possible level of accuracy, but to ensure the level of accuracy required for the final result to be reliable.
- How much time is available for fieldwork?
Limited access, the need to keep a facility operational, or the size of the space can make data capture speed a critical factor.
- How will the data be used after the survey?
Will they be used for design, measurements, and technical processing? Or for remote collaboration, inspection, and understanding the space?
The answers to these questions provide a far more reliable path to the right solution than a simple comparison of specifications.
In many projects, the answer is not a single technology.
As projects become larger and more complex, we often no longer look for a single system that can cover every requirement.
A mobile SLAM system can be used to quickly capture a large building.
A terrestrial laser scanner can handle areas where higher accuracy is required.
A drone can capture data from rooftops, surrounding areas, or hard-to-reach locations.
The different data sources can then be combined into a single environment or Digital Twin platform.
“We are no longer simply looking for the best scanner. We are designing the right workflow for capturing and leveraging data.”
Athanasia Erketi, 3D Specialist, METRICA
This is also the key advantage of a consultative approach: the decision is not limited to choosing a product, but considers the entire project workflow.
Start with the outcome you actually need.
Choosing a 3D scanning solution is not simply a decision about purchasing equipment.
It is a technical and business decision that impacts:
- time spent in the field,
- data quality and reliability,
- processing time,
- the skills required,
- the format of the final deliverable,
- the teams’ ability to effectively use the output,
That is why, before comparing prices, speeds, and technical specifications, it is essential to clearly define what the application actually requires.
Because the scanner is not the end goal.
The goal is to capture the right data, with the required level of accuracy, within the available time, and in a format that can be effectively used by the next person in the project workflow.
Not sure which workflow best meets your project requirements?
Tell us about your application, the required deliverable, and the time available for data capture.
The METRICA team can help you evaluate which solution — terrestrial scanning, SLAM, Matterport, or a combination of technologies — truly meets your needs.
Discuss your project with a specialist
With technical input from
Athanasia Erkeki
3D Specialist, Geoinformatics & Surveying Engineer, MSc
[email protected] METRICA SA
Contact us at +30 210 281 5440 or [email protected], or fill out the form below:
