SimonBrown Posted February 2, 2020 Share Posted February 2, 2020 Many of you will know I'm into a) armoured/tracked vehicles and b) underwater photogrammetry. I also err towards doing stuff with accuracy and for topside models I like to use GPS to drive the accuracy and location of what I scan. Up until now underwater GPS has been, to put it bluntly, a bit problematic. Radio waves don't penetrate the water and us divers can't use it. Until now. Last week I was working with the Finnish manufacturer of an underwater GPS positioning system. Its a seriously good bit of kit - still beyond your average diver but very cost effective. Anyway, I ended up scanning an AFV432 hulk. I have scanned it before, but did it again using the GPS feed to locate the cameras and scale the model: https://sketchfab.com/3d-models/vobster-quay-afv432-3d4821a40fe44b4283068062a3a0e9eb I could do with verifying the scale/size of the model - some check dims work out to be plus/minus 3% or thereabouts - but does anyone have a 432 close by and wouldn't mind running a tape measure over theirs for me? Quote Link to comment Share on other sites More sharing options...
Ex-boy Posted February 3, 2020 Share Posted February 3, 2020 Sorry I can’t help you in your quest Simon, but what you post is always interesting. The resolution on this is amazing, so I just wanted to say thank you. Steve. 1 Quote Link to comment Share on other sites More sharing options...
daleheywoodtanks Posted February 3, 2020 Share Posted February 3, 2020 No problem Steve, I will be doing the measurements tomorrow. Thanks again for posting Simon, fascinating stuff ! 1 Quote Link to comment Share on other sites More sharing options...
andym Posted February 7, 2020 Share Posted February 7, 2020 Let's see if this works ... Andy FV432 Technical Handbook Data Summary E100-2.pdf 1 Quote Link to comment Share on other sites More sharing options...
SimonBrown Posted February 7, 2020 Author Share Posted February 7, 2020 16 minutes ago, andym said: Let's see if this works ... Yes! Thank you... Quote Link to comment Share on other sites More sharing options...
daleheywoodtanks Posted February 8, 2020 Share Posted February 8, 2020 Simon. Here are the measurements you asked for. Sorry it took so long. A = 2580 B = 4250 C = 2820 D = i could not access the mortar hatch due to stuff being piled on top. E = 1235 F = 1005mm I hope this helps. 1 Quote Link to comment Share on other sites More sharing options...
SimonBrown Posted February 9, 2020 Author Share Posted February 9, 2020 16 hours ago, daleheywoodtanks said: Simon. Here are the measurements you asked for. Sorry it took so long. Many thanks for these. Once the latest model has finished running I will check the actual vs model values. Quote Link to comment Share on other sites More sharing options...
andym Posted February 10, 2020 Share Posted February 10, 2020 Who is the manufacturer of the GPS kit, out of interest? Andy Quote Link to comment Share on other sites More sharing options...
SimonBrown Posted February 11, 2020 Author Share Posted February 11, 2020 18 hours ago, andym said: Who is the manufacturer of the GPS kit, out of interest? Finnish company. See here: http://deep3d.co.uk/2020/02/04/accuracy-defined/ And here: http://deep3d.co.uk/2020/02/10/from-here-to-there/ Quote Link to comment Share on other sites More sharing options...
andym Posted February 11, 2020 Share Posted February 11, 2020 Thanks Simon! Quote Link to comment Share on other sites More sharing options...
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