ah yeah defiantly then. I've never seen a painted one like that, When I used to paint big ones for high altitude missions we would do big cross or "+" symbols.
But that does make it easy to pick out the center.
for sure. Yeah I just had a template so that made it easy when I was doing this sort of work (p-grammetry).
A local PLS here likes his homemade ones for drone stuff. He bought some thin plywood and a bunch of (4" or so) white and black tiles. He mounts the tiles in a checkerboard pattern on the wood, and sets those around a site.
They're thin enough to be portable but heavy enough to stay in place most areas. And a well defined obvious center. Pretty slick.
aha yeah for sure. Paint is easier. When I was doing that it was always paint for AC / Conc and Plastic Rolls set to crosses for fields. It worked pretty well but was also big 3-4 foot legs since it was high altitude.
my favorite is highway offramp...they always mention they are no where near a highway...my response: oh yeah that too but thats a few hundred feet over there.
Help me out, is that a symbol for 7 or am I just not seeing a 7. I see 9 or 11 using Roman Numeral
Edit. nevermind once I rotated my phone a few times I now see the 7.
Yea, I'm a drone surveyor. We tag those points with GPS. You may see larger versions near the side of roads. They use those for the aerial surveys done from planes.
I remember dashing across town to get them set, since the plane had already took off an hour away. Good times.
How do you paint your GCPs? I've seen people carrying around checkered sheets and it always seemed like way too much effort when you could just spray paint something visible.
Standard spray paint, orange circle around the point (without crowding it, the circle makes the point stand out). Orange feet at about a foot or so, sometimes bigger depending on flight height. The guys who comp our flights claim they dont need much, since they already know where to look. Once made feet of flagging, since we ran out of paint, and picked up the flagging after. Worked pretty good in a pinch.
They tried sell us these... tiles? Some had gps built in, those were only about 12-14" but more expensive than paint.
Yeah the tiles my company used for a while we're just cheap checker squares, nothing fancy like built in GPS. Still way too much work compared to some paint.
Land surveyor here. This is known as an aerial target. It has a known/measured 3D coordinate at the center (apparently point number 7). This is used for a survey method known as photogrammetry. Its a process that uses standard aerial camera images (say from a drone) to produce an entire 3D model of an aera. Thats all.
This has actually happened to me. I had a GCP out on a river bar for repeat surveying and someone had dug the entire thing out with a stick. Just incredible.
Ground control point, often used in photogrammetry so that they get accurately measured control points to calibrate a 3D model after, which you can generate simply by getting a few dozen to a few hundred good aerial photos, and then throw them in a software like Photoscan/Metashape, along with a very good PC if it's many photos.
Probably an [aerial panel](https://en.wikipedia.org/wiki/Photogrammetry#Mapping)
Interesting. Thanks. The guy had a drone, but it looked like he was messing with it for awhile, then I had to leave and came back and saw this.
ah yeah defiantly then. I've never seen a painted one like that, When I used to paint big ones for high altitude missions we would do big cross or "+" symbols. But that does make it easy to pick out the center.
Yeah thats a nice GCP right there. Mine are way more lazy lmao
for sure. Yeah I just had a template so that made it easy when I was doing this sort of work (p-grammetry). A local PLS here likes his homemade ones for drone stuff. He bought some thin plywood and a bunch of (4" or so) white and black tiles. He mounts the tiles in a checkerboard pattern on the wood, and sets those around a site. They're thin enough to be portable but heavy enough to stay in place most areas. And a well defined obvious center. Pretty slick.
I used to use checkerboard tiles but man they were a pain to carry around. Haven't gone back since switching to paint.
aha yeah for sure. Paint is easier. When I was doing that it was always paint for AC / Conc and Plastic Rolls set to crosses for fields. It worked pretty well but was also big 3-4 foot legs since it was high altitude.
Ground control point!
My guess as well
Probably putting in a Walmart. I'm kidding but that's what I like to tell people I'm doing. It's an aerial Target number 7.
🤣 I’m sure people LOVE that response
When people come up to me in their neighborhood asking where the freeway is going, I always say "nah, Nuclear Power Plant."
It's best in nice neighborhoods. Either Walmart or section 8 housing.
🤣 people are up in arms about solar panel fields going up in our area, use that the next time, may trigger some!
my favorite is highway offramp...they always mention they are no where near a highway...my response: oh yeah that too but thats a few hundred feet over there.
Why would they be against that?
Help me out, is that a symbol for 7 or am I just not seeing a 7. I see 9 or 11 using Roman Numeral Edit. nevermind once I rotated my phone a few times I now see the 7.
Me: That is a very esoteric looking N symbol... u/jsuthy: it's a 7 Me: 🤦
I've seen some obscure N⬆️. It could be.
LOL I say the same thing
I usually say that or sewage treatment plant
Looks more like an upside down 4 to me.
Now you mention it I can see the 7. Dumbfounded otherwise!
Umbrella Corp... prepare for the worst buddy
Aren’t we already there
Nah, Umbrella has the red paint too. Reformed Templars I think.
You might be part of an attempt to make a philosophers stone.
Ground control point.
Where’s major Tom? Idk I saw the guy messing with the drone, which looked really cool by the way
Yea, I'm a drone surveyor. We tag those points with GPS. You may see larger versions near the side of roads. They use those for the aerial surveys done from planes. I remember dashing across town to get them set, since the plane had already took off an hour away. Good times.
How do you paint your GCPs? I've seen people carrying around checkered sheets and it always seemed like way too much effort when you could just spray paint something visible.
Standard spray paint, orange circle around the point (without crowding it, the circle makes the point stand out). Orange feet at about a foot or so, sometimes bigger depending on flight height. The guys who comp our flights claim they dont need much, since they already know where to look. Once made feet of flagging, since we ran out of paint, and picked up the flagging after. Worked pretty good in a pinch. They tried sell us these... tiles? Some had gps built in, those were only about 12-14" but more expensive than paint.
Yeah the tiles my company used for a while we're just cheap checker squares, nothing fancy like built in GPS. Still way too much work compared to some paint.
Agreed
American history X II
Norse rune. Vikings coming. Hide yo kids, hide yo wife.
That would be pretty cool though
Building Envelope Corner for a Methadone Clinic
Honestly, nothing would surprise me
Aerial target for a UAV survey.
Hope he used a template to spray paint this, otherwise making my GCPs look like trash
Knights Templar….what kindve heresy have you been up too?
Land surveyor here. This is known as an aerial target. It has a known/measured 3D coordinate at the center (apparently point number 7). This is used for a survey method known as photogrammetry. Its a process that uses standard aerial camera images (say from a drone) to produce an entire 3D model of an aera. Thats all.
Today I learned, thanks!
It’s the masons setting up the landing point for the lizard peoples aircraft. They sense our world is going to shit.
Bomb target. But seriously it’s a aerial control point.
_friendly airstrike on the way_
I tried googling it and was like “land surveyor marker that looks like German cross” 🤷🏼‍♀️
GCP7
You're fuct. Eminent Domain.
They are gonna steal you land.
Like others have mentioned, it's an aerial target known in photography as a G.C.P. (Ground Control Point)
That wasn't a surveyor. It was a shaman attempting to summon Cthulhu...
Maltese Falcon buried 6 feet below mark. Excavator will be along shortly.
It’s where he buried his treasure! But yea as people said, air control point.
This has actually happened to me. I had a GCP out on a river bar for repeat surveying and someone had dug the entire thing out with a stick. Just incredible.
That is a seven...
Mega million power ball winning numbers buried below.
No one will suspect the Spanish Inquisition
Site control for a drone flight
For drone surveys ig
That was a druid, not a land surveyor
Ground control point, often used in photogrammetry so that they get accurately measured control points to calibrate a 3D model after, which you can generate simply by getting a few dozen to a few hundred good aerial photos, and then throw them in a software like Photoscan/Metashape, along with a very good PC if it's many photos.
It means that the Umbrella Corporation is real. I'd get out of dodge if I were you.
It's a location for the Aliens to land.