Equalize Pointcloud Color

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MagicBrou
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Equalize Pointcloud Color

Post by MagicBrou »

Hi,

i have two colored Pointclouds from 2 different Sensors (Trimble X12 and Faro X130) and imported those in Trimble Realworks.

Obviously one Pointcloud is much brighter than the other one.

Is there any option to even out the Pointcloud Colors?

I tried the Arithmetric Filter of Scalar Values in CC but it only works for Intensity.

Thank
Julian :-)
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Re: Equalize Pointcloud Color

Post by badam »

MagicBrou wrote: Tue Jan 10, 2023 8:04 am Hi,

i have two colored Pointclouds from 2 different Sensors (Trimble X12 and Faro X130) and imported those in Trimble Realworks.

Obviously one Pointcloud is much brighter than the other one.

Is there any option to even out the Pointcloud Colors?

I tried the Arithmetric Filter of Scalar Values in CC but it only works for Intensity.

Thank
Julian :-)
well if you create R,G,B scalar fields then try the arithmetic filter then you can reaply that rgb values...

tools -> color -> convert to scalar fields (R,G,B)

run the arithmethin filter separatelly on every scalar field then

tools ->color -> from scalar fields
MagicBrou
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Re: Equalize Pointcloud Color

Post by MagicBrou »

badam wrote: Tue Jan 10, 2023 8:22 am
MagicBrou wrote: Tue Jan 10, 2023 8:04 am Hi,

i have two colored Pointclouds from 2 different Sensors (Trimble X12 and Faro X130) and imported those in Trimble Realworks.

Obviously one Pointcloud is much brighter than the other one.

Is there any option to even out the Pointcloud Colors?

I tried the Arithmetric Filter of Scalar Values in CC but it only works for Intensity.

Thank
Julian :-)
well if you create R,G,B scalar fields then try the arithmetic filter then you can reaply that rgb values...

tools -> color -> convert to scalar fields (R,G,B)

run the arithmethin filter separatelly on every scalar field then

tools ->color -> from scalar fields
Hey,

I tried your workflow but it only makes RGB Scalar Fields out of the Intensity Values and not the real Color :(.
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Re: Equalize Pointcloud Color

Post by badam »

it works.

you need to apply the correct fields to your cloud during the "From scalar Fields" function.
from_scalar_fields.png
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Leandre Robitaille
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Re: Equalize Pointcloud Color

Post by Leandre Robitaille »

I have mentioned this before here ;
viewtopic.php?p=87942&hilit=color#p87942
but I can confirm this trick works with any pointcloud from any scanner. Results are as good as it gets.
SCENE PPC.png
All you need is a Faro Scene license (or a trial). Import a structured e57 within it. They can all be pre-registered in the software of your choice, for example TRW, export them as a e57 then Scene will honour the registration after import. After click on this to create the project point cloud, the settings in this picture is what I use most of the time but you can change those values if you want;
PPC SETTINGS.png
You will lose the ''structured'' information. This will unify the pointcloud and decimate the density to the selected settings, I do admit that the duplicate point radius is not obvious, that is why I select the minimum value. You will also loose intensity values, you can only use colors with this pointcloud.

Once the process is done to export this you need to view the top level 3d view. Create a clipping box and adjust it to the points you want to export, then right click and select export 3d selection ;
EXPORT.png
I rarely do this. I only do it to specific clients that want a photo realistic pointcloud for video/animations etc. Some architects like to have it like this as well, especially for outdoors.However for outdoors, we have been getting better results including a drone in the equation and merging the photogrammetry with the pointcloud in RealityCapture.
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Raimund58
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Re: Equalize Pointcloud Color

Post by Raimund58 »

Leandre Robitaille wrote: Tue Jan 10, 2023 6:15 pm
All you need is a Faro Scene license (or a trial). Import a structured e57 within it. They can all be pre-registered in the software of your choice, for
No need for a Faro Scene license or a trial, Faro Scene LT has everything you need for this kind of job. (to import pre-registered point clouds and create a beautiful unified point-cloud)

Btw, usually, I always create and export a project point cloud as RCS to work with it in AutoCAD/Navisworks.
\o/
MagicBrou
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Re: Equalize Pointcloud Color

Post by MagicBrou »

thank you guys ,

I am trying bot ways with CC and Scene LT and hopefully i get good results :)!

Thanks

MagicBrou
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Re: Equalize Pointcloud Color

Post by badam »

MagicBrou wrote: Wed Jan 11, 2023 2:31 pm thank you guys ,

I am trying bot ways with CC and Scene LT and hopefully i get good results :)!

Thanks

MagicBrou
Can i ask you what kind of arithmethic functions do you apply to blend the colors on near points?
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