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waloshin

macrumors 68040
Original poster
Oct 9, 2008
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Is it possible to capture 9 acres of paths with lidar on the iPad? Or is that a little ridiculous?

Thanks
 

Slartibart

macrumors 68030
Aug 19, 2020
2,999
2,707
you plan to walk a grid to cover the whole area of that 9 acres? I just for fun walked outside scanning my path, low res scan:

47304D51-B9EC-4CEC-A957-AD3997672DC5.jpg


The result is a 21MB USDZ file. It takes about 40 seconds to create the file on an 11” iPad Pro 2020. Plus walking time. I could imagine if you walk a grid you can produce roughly 5 m wide and -max. length needs to be determined- bands which you could combine in a 3D program like e.g. Blender. But I don’t think it is actually feasible (mainly total time, and things like missing elavation data, etc.). ?
 
Last edited:

ericwn

macrumors G4
Apr 24, 2016
11,993
10,749
you plan to wal a grid to cover the whole area of that 9 acres? I just for fun walked outside scanning my path, low res scan:

View attachment 1794333

The result is a 21MB USDZ file. It takes about 40 seconds to create the file on an 11” iPad Pro 2020. Plus walking time. I could imagine if you walk a grid you can produce roughly 5 m wide and -max. length needs to be determined- bands which you could combine in a 3D program like e.g. Blender. But I don’t think it is actually feasible (mainly total time, and things like missing elavation data, etc.).

What app were you using here?
 

Slartibart

macrumors 68030
Aug 19, 2020
2,999
2,707
What app were you using here?
The free 3d Scanner app.

In the meantime I additionally tried to combine a few Scans in Apple‘s RealityComposer on an iPad Pro 2020 - sadly the app just shuts down when trying to load USDZ files like the one above. I didn’t have time to check wether RealityComposer on MacOS loads these files (and I didn’t check wether other file types like .OBJ work better).

Additionally I discovered that, while the USDZ file is just about 21MB, the 3d scanner app produces additional data of about 170Mb.

Scanning the surface area equivalent of 9 acres with an iPad Pro seems to be… let’s say: ambitious ?… you have to have at least some time ?… it‘s probably easier, cheaper - and slightly faster ? - to buy or get satellite imaging data for the area as well as GIS data to create a model. If this is what the OP wants to do?
 
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waloshin

macrumors 68040
Original poster
Oct 9, 2008
3,340
175
The free 3d Scanner app.

In the meantime I additionally tried to combine a few Scans in Apple‘s RealityComposer on an iPad Pro 2020 - sadly the app just shuts down when trying to load USDZ files like the one above. I didn’t have time to check wether RealityComposer on MacOS loads these files (and I didn’t check wether other file types like .OBJ work better).

Additionally I discovered that, while the USDZ file is just about 21MB, the 3d scanner app produces additional data of about 170Mb.

Scanning the surface area equivalent of 9 acres with an iPad Pro seems to be… let’s say: ambitious ?… you have to have at least some time ?… it‘s probably easier, cheaper - and slightly faster ? - to buy or get satellite imaging data for the area as well as GIS data to create a model. If this is what the OP wants to do?
That is probably the best idea. Will look into that.
 
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