Jason Yoscovits Drone Fleet Lead, Senior Construction Inspector

We are experiencing an odd issue with GCP’s while attempting to process two datasets within one of our Instances. When uploading the .csv file containing point information, IVION is showing misalignment of all 7 points by several hundred feet (Image 1).


I have verified the coordinates are correct both with the site surveyor and also with a quick check in Google Maps as can be seen in Image 2


 

Thank you Laurin...

Steps taken in effort to resolve: <ul> <li>Reprocessed data in "High Confidence" with Panos embedded. Point Cloud still contained heavy reflection points.</li> <li>Downloaded Point Cloud with pano's embedded.&nbsp;</li> <li>Imported Point Cloud containing pano's into Cloud Compare.</li> <li>Removed unwanted reflection points (roughly 2 million points). Cloud Compare maintained the pano's as noted during save.</li> <li>Uploaded clean point cloud to IVION instance via Dataset Management.</li> <li>Aligned dataset via "Dataset Alignment"&nbsp;</li> <li>Removed exiting dataset which contained reflection points.</li> </ul> Result = Unsuccessful, Unnavigable dataset! Though Cloud Compare maintained the 96 panos, the pano locations are saved in the original dataset. Not having a tool available in IVION to clean up the point cloud to remove anomalies like this is difficult for me to comprehend.

We experienced this the first time we used the VLX and haven’t had much of an issue since.

Now it’s cropped up again where, in the point cloud, we get a ghosted 3D reflection outside window areas which mirror some of the interior surroundings we’re scanning at the time.

This makes the exterior of the 3D point cloud both unclear and fairly unusable. See attached photos
Note: we used “Standard Processing”.

The Image "Reflection Issue not in front window" depicts that the reflection issue did not occur in the front window of the IVION model.
   

Along with how we may avoid this in the future I have an important question. With all of the valuable tools within IVION, why does NavVis not afford the user to modify/crop/clean-up the point cloud?!
 

Thank you Lisa. Happy Holidays 

Today NavVis released IVION version 10.2.4. I am currently processing 5 datasets in the cloud. Am I able to update to the current version while processing or shall I wait until processing is complete?

Thank you Youlin.

From time to time during a mapping operation the VLX appears to get lost/lose it's reference. This has happened when scanning tight to semi tight spaces such as tunnels. In the attached image you will see two shafts. These shafts are approximately 250' apart. During the scanning operation I noticed that though I was moving (slowly) the VLX user interface showed the VLX icon moving static like in the same place. The walls of the tunnel had many features that differed throughout the alignment.   I canceled the scan and performed a second scan. Though the second scan provided better results, the postprocessed data was off in total length. Is there a best practice that I can employ to avoid the VLX from becoming confused in terms of its' location in space. 

Thank you Nancy and Youlin. The data set processed without a hitch and looks great. Nancy, I am already running v2.9.0

On 4.19.2021 I completed mapping of an underground facility. This facility was made up of 4 separate data sets. While preparing the data for upload today I noticed that the dataset_rec folder from the first data set (2021-04-19_18.50.36) did not contain a quality map. I performed the mapping operation with the VLX. The remaining three datasets look fine. I reviewed the log (2021-04-19_NavVis.log) and did not see anything peculiar. I have attached a screenshot of the folder contents as well as the a screenshot of the cloud upload. Do you think the data will process correctly.