Alternate Pre-Processing in PCMaster When You've Had a Shut-Down Error

Your LiDAR data may be recoverable if you've had a shut-down error or power failure during collection. Follow these steps if you encounter an empty project folder after unpacking your data.

Review this article to determine why your data collection may have failed.

Follow These Steps to Rebuild Your Project in PCMaster

1. Open a new project in PCMaster and select ALL the .data files in the [data] folder

2. Transfer your RINEX file as usual

If you see a  data offset error message it will still process but you may miss the final 1% of the capture (if that area happens to be part of your area of interest, then that part will be truly lost). Check this article to learn more about why this error occurs and what it means.

3. Update your  specific LiDAR Unit parameters (these will differ from examples in the screenshots) by following the instructions below:

You will want to update the following parameters:

  • Linear offset
  • Angular offset
  • Orientation

Copy these parameters from a previously completed project by opening it side by side or looking at the ppk.pcmp file in a text editor to see the values you need to update. Then you can paste these into their respective boxes in PCMaster.

Screen Shot 2021-10-26 at 12.01.09 PM

OR

Get them directly off the unit itself and enter into PCMaster
CAL-1

PCMaster Unit Specific Settings

Note: If you're on the latest firmware these parameters should auto populate, but you should double check them. 

 

4. Click Produce .LAS


Now you should have a trajectory corrected .las file with the proper LiDAR unit parameters.

Follow the steps below  you want to colorize your .las in PCPainter

1. Open a new project in PCPainter and follow the prompts

  • Select Point Cloud titled ppk_cloud_1.las in [clouds] folder 
  • Select Trajectory titled ppk.txt in [ins] folder titled ppk.txt
  • Select ALL photos in the [camera] folder 

2. Once the visualizer has populated you need to add your specific (will differ from screenshots below) unit parameters back in. 

You will want to update the following parameters:

  • Linear offset
  • Angular offset
  • Orientation
  • FOV (field of view)

You can do this by copying them from a previously completed project by opening it side by side or by looking at the ppk.pcpp file in a text editor to see the values you need to update. Then you can paste these into their respective boxes in PCPainter. 

Screen Shot 2021-10-26 at 12.03.39 PM

OR

You can get them directly off the unit itself and enter into PCMaster

CAM

PCPainter Unit Specific Settings

Note: If you're on the latest firmware it will auto populate, but it's still worth double checking.

3. Check your photos and make sure they  are aligned correctly to the point cloud.

4. Click Produce .LAS

 

You should now have a colorized point cloud ready to upload to the ROCK Cloud!