SteamVR

SteamVR

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CT Scans
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272.242 MB
Aug 8, 2022 @ 5:23pm
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CT Scans

In 1 collection by Valve Artists
Valve Environments Collection
24 items
Description
Here is a small selection of CT scans produced using an industrial CT scanner. Capable of extremely high resolution scans, it produces gigabytes of voxel data which has been converted into simpler 3D models capable of being rendered in real-time on your GPU.

Some technical details: CT scanner was a GE Phoenix V|tome|x S X-Ray Machine with dual 240kV and 180kV tubes and the larger DXR 400mm detector, the 180kV tube being used for the insect scans since they are mostly homogeneous in density, and the lower power tube produces smaller voxel sizes.

Scans were processed in VGSTUDIO MAX, generating model geometry relatively close to that seen in VR, with additional triangle reduction done in MeshLab. Displayed scans are roughly two million triangles each, with the vacuum tube and bumblebee scans both involving two separate models generated at different density levels - the lower density model being rendered as transparent.

Model vertex colours were generated in MeshLab using the volumetric obscurance filter followed by various colour adjustments. This makes interior structures vastly easier to 'read' visually while still being quite inexpensive to render - there's a checkbox to use vertex colours in the material parameters.

The near clipping effect is set via a Lua map script loaded on startup - in this case scripts/vscripts/map_scripts/ct_scans.lua:

function Activate( state )
ListenToGameEvent( "player_spawn", OnPlayerSpawned, nil )
end

function OnPlayerSpawned( entityIndex )
local player = PlayerInstanceFromIndex( entityIndex )
SetNearZ( player, 14 )
end


If you have any questions, once again please don't hesitate to ask in the comments!
39 Comments
Lizardman8891 Jan 12 @ 4:43pm 
Is there a way to import my own CT scans into this interface? I am an entomology researcher using CT scans to help describe the internal anatomy of insects, and I am absolutely blown away at this little demo. It would literally be transformative to how I conduct my research if I was able to use this interface.
sithblood01 Sep 28, 2024 @ 5:40pm 
Erm what the fle
Dr. Peace Aug 6, 2024 @ 9:05am 
Humans aren't supposed to be doing this. These eyes are not meant to witness the interior intricacies of other organisms
_GoldSrc_ Jun 12, 2024 @ 3:36am 
This is really cool, just wished it had more objects.
󠀫 Jan 14, 2023 @ 1:09pm 
Valve in 1998 - 2011:
We Make games!

Valve Now:
BUG
eminemi Nov 20, 2022 @ 4:06am 
sus
NanoBeef Sep 28, 2022 @ 1:59pm 
oO ???
mahnenvulf Sep 20, 2022 @ 7:00am 
what the fuck
TrainzMarcel Aug 28, 2022 @ 6:23am 
computer bug go wrrr
its_Eva Aug 28, 2022 @ 5:24am 
forza roma
:steammocking: