New scans can be started using the blue scan button from the main screen.
You will then be taken to the scan function, where the following options are available:
The scanning process can be canceled using the Cancel button located at the top left of the screen.
In the top center, the accuracy icon provides information about the scan's positional accuracy. Tapping this icon opens a detailed view of the current accuracy, including whether RTK Fix is available. High-precision geo-positioning of the collected data is only ensured when RTK Fix is active.
To the right of the accuracy icon is the antenna symbol, which indicates whether a connection to the external GNSS receiver exists. Tapping this icon opens a detailed status view. Here, the user can initiate a reconnection to the GNSS receiver or disconnect an existing one.
The Save button is located at the top right corner. Saving is only possible once the scanning process has ended. A scan can be discarded and repeated if needed.
The bottom area displays all available modes. From left to right, the user can add photos, point objects, and line objects to the scan. By default, Photo Mode is preselected.
Start Scanningning process can be canceled using the Cancel button located at the top left of the screen.
The scanning process is initiated once by tapping the blue scan button, and it is stopped by pressing the save button. The process can be canceled at any time using the X (cancel) icon.
During scanning, all elements that will later be part of the 3D model are displayed clearly without overlay. Blue-colored areas will not be included in the final scan, either because they have not yet been captured or are too far away.
After a successful connection with the GNSS receiver, scanning should only be started when the accuracy is below 1.5 cm and an RTK Fix is active.
Alternatively, after a waiting period of 90 seconds, scanning can also be started with lower positional accuracy. This also applies when no external GNSS receiver is connected. In such cases, the app will note the imprecise positioning in the scan and record it for later display in the detail view.
This ensures that scanning is possible at any time, regardless of signal quality.
Figure: Waiting period due to no GNSS device connected
For better geographic positioning of a 3D scan, it is advisable to move along the desired object during the scanning process and to capture it from as many angles as possible. Additionally, it is recommended to record features such as trees or fences using photos rather than scanning them.
Take Photos
The Photo Mode is located at the bottom left. Photos can be taken during the scanning process. Photos can also be added after saving, as long as the scan has not yet been uploaded.
Add Point and Line Objects
Point objects can be added until the scan has been saved. Unlike photos, it is not possible to add point objects afterward. A viewfinder indicates the position of the point, and tapping the shutter button confirms its placement.
Creating a line works in a similar way. As long as the line is being edited, each new point is connected to the previously placed one. It is possible to undo the placement of the last point. To finish a line, it must be confirmed by tapping the checkmark button. A line requires at least two points to be created.
To delete a line, it must first be selected using the viewfinder; once selected, its points are displayed in yellow. After selection, the entire line can be deleted.
Point and line objects must be assigned to categories. This is done using the selection field above the shutter button. You can choose between:
- Main trenches and house connection trench
- Building edges
- Duct interruption (Fitting), House Entry Point APL, Ball marker, Duct end,
- Closures, distribution point
Figure: Add Point Object Figure: Confirm Point Object “Closure”
Figure: Add Line Object Figure: Confirm Line Object “Street Trench”
Mandatory Fields in NET Scan
NET Scan supports the configuration of mandatory fields. This feature ensures that all required attributes are completed before a scan can be uploaded.
When a field is defined as mandatory, the following rules apply:
The field is marked with a red asterisk (*)
If a mandatory field is left empty:
- The scan cannot be uploaded
- A red exclamation mark appears to indicate that an entry is missing
The notification “Please assign all required attributes to all points and lines.” is displayed when attempting to upload the scan
Note: The scan can only be uploaded once all mandatory fields have been filled in.
Optimize Positioning
For centimeter-accurate positioning, a stable internet connection and a connection to the external GNSS receiver are absolutely essential. Additionally, the quality of the positioning can be improved by moving several meters during the scanning process.
The accuracy icon uses color to indicate the expected positioning accuracy of the scan. The accuracy is also displayed numerically in meters or centimeters. The color scale ranges from red (poor accuracy) to yellow (moderate accuracy) and white (good accuracy). It is recommended to wait until the icon indicates good accuracy before starting the scan. After turning on the GNSS receiver for the first time, achieving good accuracy may take longer than in subsequent uses.
Accurate positioning can only be guaranteed when the accuracy icon is white, indicating good accuracy (approximately 1 cm), meaning that an RTK Fix is active—this is essential for high-precision positioning.
Figure: Warning – No GNSS Device Connected
The progress of the accuracy can be tracked via this icon and examined in detail by clicking on the button.
Figure: Accuracy Detail View
Naming, Processing, and Saving of Scans
If the scanning process is to be ended, this is done using the save button. If the maximum scan size is reached beforehand, the scanning process will automatically stop. Pressing the save button initiates processing. Once processing is complete, the detail page of the recently captured scan will open.
Figure: Processing the Scan
With an active internet connection, the current address is determined based on the GPS coordinates and used as the title of the scan.