Transferring Data to a Desktop

The Three Stages of a Dataset

Data acquisition and processing is done in three steps:

1. Scanning: Records images and data such as laser scans and Wi-Fi signals, and stores it on a disk.

2. Post-processing: Turns raw data into finished Point clouds, maps, and panorama images. While those artifacts are technically available live during the scan, they are re-computed during post-processing with higher quality and greater accuracy.

3. Web processing: Prepares the post-processed data for NavVis IVION.

The data from each of these steps is kept in directories called datasets. A dataset contains all the data of the corresponding scan run according to the current stage of the processing. A project directory looks like this:

<base directory>
    datasets_rec/<dataset>
    datasets_proc/<dataset>
    datasets_web/<dataset>

Wherein:

• <base directory> is the project directory, typically named for the project's working title or the customer's name.

• datasets_rec contains the raw Recorded datasets.

• datasets_proc contains the processed datasets obtained by post-processing the Recorded datasets.

• datasets_web contains the datasets ready for NavVis IVION.

• The actual name of <dataset> is the date and time when it was recorded.

Note: While it is technically possible to process data in arbitrary places, we strongly recommend you follow the directory structure above. The tools working on multiple datasets at the same time require this structure.

Note: Never delete files or directories from the datasets under datasets_rec. These represent the original data; all other files can be generated from there. That means the minimum required for backup are all the folders in datasets_rec/*.

Note: Project directory names must not contain spaces or umlauts.

Transferring Data to a PC

Before you start uploading, create the directories described above on your computer. Make sure you have access to those directories.

Transferring Data from the SSD

Take the hard drive out of the powered-down device and connect it to your PC using a SATA-to-USB adapter. Once your PC recognizes the disk, you can drag and drop the directories you need to copy using your file explorer. By default, recorded data is stored on the SSD in data/datasets_rec/<date_time>/.

After you have successfully transferred all data, delete the data from the device to make room for future scans.