Lidar Velodyne VLP 16

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ludiga
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Lidar Velodyne VLP 16

Post by ludiga » Tue Oct 20, 2015 10:15 am

Hello guys,
I head the Velodyne Lidar VLP 16.
The lidar interfaces with the software Veloview to record frames and create the file pcap.
Now the point is this, from pcap files I can export all frames into individual csv file, so I end up with thousands of csv file!!!
How can I merge all the csv file? or I can process it by pcap to have a file LAS or other?
The velodyne has Garmin GPS 19x HVS, with PPS to a 1 hz.
I tried playing with the software wireshark but nothing.
I gave the timestamp for every frame.

Thanks a lot

r_oliveira
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Re: Lidar Velodyne VLP 16

Post by r_oliveira » Tue Oct 20, 2015 10:56 am

Use powershell for instance

Code: Select all

Get-Content *.csv | Set-Content output.txt

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Jason Warren
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Re: Lidar Velodyne VLP 16

Post by Jason Warren » Tue Oct 20, 2015 11:02 am

Or at the Windows 7 cmd line:

Code: Select all

type mydatafiles*.csv > mybigdatafile.csv
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Re: Lidar Velodyne VLP 16

Post by Jason Warren » Wed Oct 21, 2015 9:26 am

Do you have a sample pcap file you can share with us, and highlight the frames you wish to parse out. A simple VB app maybe able to help here... ;)

Or you maybe able to save the data out of VeloView as sequential *.vtp files. Import them into ParaView, and then export out as a single *.csv.... worth investigating.

I don't think Cloudcompare or FME can import pcap files, but it would be good to know for sure. Ideally you want VeloView to capture the data in real-time and save into a database.... then you can export whatever you like.

Hope this helps...
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