meshlab xyzrgb import

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shankskill
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meshlab xyzrgb import

Post by shankskill » Fri Jan 09, 2015 2:03 pm

I'm trying to create textured low-poly meshes of scan data from Scene using Meshlab.

I have exported from Scene as .xyz, and the file appears to include colour data:

0.944600 -1.794700 6.050800 91.000000 76.000000 121.000000
0.910900 -1.789300 5.992900 105.000000 82.000000 116.000000
1.099600 -1.803400 6.042500 95.000000 80.000000 130.000000
1.078200 -1.820600 6.055800 84.000000 74.000000 105.000000

When importing the .xyz file into Meshlab all the points are grey. I have been following some guides to texturing a mesh from the original points, but without success, and I'm wondering whether Meshlab is reading the colour data – it certainly isn't showing it!

Help!

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Matt Young
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Re: meshlab xyzrgb import

Post by Matt Young » Fri Jan 09, 2015 2:09 pm

I'm no expert with Meshlab but Noticed in that example that the RGB Values have the same number of decimal places as the coordinates. I don't think the RGB values need the decimals and should be separated by a coma? just a thought.

I just found this post which might offer more help than my guessing...
http://www.laserscanningforum.com/forum ... 3&start=10
If you don't see that there is nothing, then you are kidding yourself.

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shankskill
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Re: meshlab xyzrgb import

Post by shankskill » Sat Jan 10, 2015 12:30 am

Indeed, maybe they're not even RGB values. Could they be normals? I wouldn't have thought they'd have zeroes after the decimals, but what do I know? Maybe I'll check I'm exporting correctly from Scene first.

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Re: meshlab xyzrgb import

Post by max72 » Sat Jan 10, 2015 9:40 am

In my experience the best solution is to use cloud compare as a bridge.
In cloud compare you can import E57, and now faro files too (I have to test it..).
If you have a text file cloud compare allows you to decide what is every column.
In cloud compare you can fuse, subsample, and do a lot of nice things.
Then you can export to meshlab using a format more compatible with Meshlab, like PLY.

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Re: meshlab xyzrgb import

Post by jha » Sat Jan 10, 2015 10:23 am

Rename the extension .xyz to .txt. Then choose the x y z r g b option when importing the file.
meshlabtxt.png
Greetings,

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Re: meshlab xyzrgb import

Post by max72 » Sat Jan 10, 2015 11:21 am

Nice one!
Thanks,
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Re: meshlab xyzrgb import

Post by nfaino » Tue Aug 09, 2016 10:41 pm

Hi all,

This is exactly what I need, but I can't figure out how to get the Pre-Open Options to come up in Meshlab. Can someone help sort me out?

Thanks.

-Nic

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