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CloudCompare forum Open-source point cloud editing software 2026-05-29T14:04:18+00:00 https://cloudcompare.net/forum/app.php/feed/forum/10 2026-05-29T14:04:18+00:00 2026-05-29T14:04:18+00:00 https://cloudcompare.net/forum/viewtopic.php?p=31971#p31971 <![CDATA[Issues, bugs, etc. • Re: Sensor transformation is wrong for registered PTX files]]> https://paulbourke.net/dataformats/ptx/, the sensor position and orientation is stored in rows 3-6 (row 3 is the sensor center, and the next 3 rows are the X, Y and Z vectors).

Rows 7-10 store the global transformation matrix that applies to the points (and I would assume to the sensor as well). At least that's what I could see in samples files such as some files found on http://www.libe57.org/data.html or Paul Bourke's site.
ptx_header.jpg
So in your case, I would expect row 3 to equal the 3 first values of row 10, and rows 4 to 6 equal the 3 first values of rows 7 to 9 (or something totally different depending on how the cloud was registered). Otherwise, this means that the points have been registered, but there's no 'sensor' associated.

Statistics: Posted by daniel — Fri May 29, 2026 2:04 pm


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2026-05-28T07:13:51+00:00 2026-05-28T07:13:51+00:00 https://cloudcompare.net/forum/viewtopic.php?p=31968#p31968 <![CDATA[Issues, bugs, etc. • Re: Sensor transformation is wrong for registered PTX files]]> Statistics: Posted by framed — Thu May 28, 2026 7:13 am


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2026-05-27T22:10:25+00:00 2026-05-27T22:10:25+00:00 https://cloudcompare.net/forum/viewtopic.php?p=31967#p31967 <![CDATA[Issues, bugs, etc. • Re: Sensor transformation is wrong for registered PTX files]]> Statistics: Posted by daniel — Wed May 27, 2026 10:10 pm


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2026-05-26T08:04:44+00:00 2026-05-26T08:04:44+00:00 https://cloudcompare.net/forum/viewtopic.php?p=31958#p31958 <![CDATA[Issues, bugs, etc. • Sensor transformation is wrong for registered PTX files]]>
Pretty sure this is a bug. When importing a PTX file that has been registered (eg. exported from Leica Register360), the Sensor coordinates come through at 0,0,0. This is incorrect. The sensor coordinates should be translated by the values in row 10. See here: https://wiki.photoneo.com/index.php?tit ... ile_format

Furthermore, lines 7-10 define the transformation matrix for the sensor. See screenshot below, which shows the transformation matrix in a registered PTX next to the correct sensor location in CC (from an E57 file of the same cloud)
Screenshot 2026-05-26 201405.png

Statistics: Posted by framed — Tue May 26, 2026 8:04 am


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2026-05-21T14:59:33+00:00 2026-05-21T14:59:33+00:00 https://cloudcompare.net/forum/viewtopic.php?p=31956#p31956 <![CDATA[Issues, bugs, etc. • Re: FAILED TO OPEN FILE FOR OUTPUT: INVALID VIDEO SIZE]]> Statistics: Posted by asconstruction1967 — Thu May 21, 2026 2:59 pm


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2026-04-20T05:58:03+00:00 2026-04-20T05:58:03+00:00 https://cloudcompare.net/forum/viewtopic.php?p=31913#p31913 <![CDATA[Issues, bugs, etc. • Re: Maybe a dumb question about coordinates (Z coord on point picking)]]>
OK it is confirmed it is a dumb question:

i didn't noticed that "Coord.Z" is the name of the scalar field that indeed i created and THEN applied some transforms.
Maybe its good to have a suffix to that label. "SF Coord.Z =" to have a nice "first glance" comprehension of that value.


Refreshing it is causing values to match again.



For the global shift: yes i know i lose some accuracy, but since the values are millimeters, i can afford to have a whole 1mm error


As a little suggestion:

it would be nice (for me..) to have:

less transparency in the beam
1.png

to be able to copy/paste from tree a 2d label to have full data, not only the name.
copy/paste now results in a: "2D label: Point #6225085"


the last suggestion in "eye-candy"

to have a border and a footer banner to match the picked point's RGB color:
2.png

Statistics: Posted by c3kkos — Mon Apr 20, 2026 5:58 am


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2026-04-18T09:17:46+00:00 2026-04-18T09:17:46+00:00 https://cloudcompare.net/forum/viewtopic.php?p=31911#p31911 <![CDATA[Issues, bugs, etc. • Re: Maybe a dumb question about coordinates (Z coord on point picking)]]>
The way the red X, green Y and blue Z appear on the left side of the label is weird. And also, how and when was the 'coord Z' scalar field generated? Does it really match the coordinates in the current cloud position?

Last, even if I agree it's a different problem - not using a Global shift is risky here (as you will probably lose some accuracy, at least along the X dimension).

Statistics: Posted by daniel — Sat Apr 18, 2026 9:17 am


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2026-04-17T05:56:08+00:00 2026-04-17T05:56:08+00:00 https://cloudcompare.net/forum/viewtopic.php?p=31903#p31903 <![CDATA[Issues, bugs, etc. • Maybe a dumb question about coordinates (Z coord on point picking)]]>
there is something i can't get even after some time spent tweaking and checking my setup.

For i have a world-coordinates-referenced point cloud,

a -yellow- plane (set wireframe) which is set to be on Z=1000

here the screenshots:
Screenshot 2026-04-17 073814.png
Screenshot 2026-04-17 073835.png

so... why if i shift-pick a point which is correctly shown as Z0 = -91.231567, then the same widget reports a "Coord. Z = -1035.231567" ?

here's a second screenshot, i added a second -green- plane which is set on Z=0
Screenshot 2026-04-17 074627.png
As the single point picking returns (or does it?) an absolute coordinate data, why shouldn't be that Z0 IS EQUAL to Coord.Z?
They are not different values, an offset is applied (note the decimals, they are the same)
This seems strange at least, but it must be either wrong or wrong is my take on it (and my two cents are bet on the latter)

I do not have any kind of global shifts, or somehow voluntary altered the coordinate system.


By the way, i used shift-picking but the other methods return the same data

Statistics: Posted by c3kkos — Fri Apr 17, 2026 5:56 am


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2026-04-13T21:17:31+00:00 2026-04-13T21:17:31+00:00 https://cloudcompare.net/forum/viewtopic.php?p=31896#p31896 <![CDATA[Issues, bugs, etc. • Re: First launch time very long in windows session.]]> Statistics: Posted by daniel — Mon Apr 13, 2026 9:17 pm


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2026-04-13T10:17:31+00:00 2026-04-13T10:17:31+00:00 https://cloudcompare.net/forum/viewtopic.php?p=31893#p31893 <![CDATA[Issues, bugs, etc. • First launch time very long in windows session.]]> I experience a strange start of CloudCompare : the first start of an empty CloudCompare in my Windows 11 session takes up du 55 seconds to open where as the other sessions take about 8 to 10 seconds.
Is there a way to log this start to help you investigate ?
It's not an important issue but it irritates a bit and it could be the premise of another issue.

Statistics: Posted by BenoitD — Mon Apr 13, 2026 10:17 am


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2026-03-12T02:22:02+00:00 2026-03-12T02:22:02+00:00 https://cloudcompare.net/forum/viewtopic.php?p=31849#p31849 <![CDATA[Issues, bugs, etc. • Re: FAILED TO OPEN FILE FOR OUTPUT: INVALID VIDEO SIZE]]> Statistics: Posted by daniel — Thu Mar 12, 2026 2:22 am


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2026-03-09T18:47:08+00:00 2026-03-09T18:47:08+00:00 https://cloudcompare.net/forum/viewtopic.php?p=31846#p31846 <![CDATA[Issues, bugs, etc. • FAILED TO OPEN FILE FOR OUTPUT: INVALID VIDEO SIZE]]> Statistics: Posted by eliscio — Mon Mar 09, 2026 6:47 pm


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2026-03-06T14:49:59+00:00 2026-03-06T14:49:59+00:00 https://cloudcompare.net/forum/viewtopic.php?p=31842#p31842 <![CDATA[Issues, bugs, etc. • Re: PCV / Shadevis -- not working in beta 2.14]]> https://www.cloudcompare.org/release/Cl ... up_x64.exe (I cannot list it on the website as it's not signed sadly).

Statistics: Posted by daniel — Fri Mar 06, 2026 2:49 pm


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2026-02-23T01:23:43+00:00 2026-02-23T01:23:43+00:00 https://cloudcompare.net/forum/viewtopic.php?p=31825#p31825 <![CDATA[Issues, bugs, etc. • Re: 2.14 beta can't read .glb file.]]> Statistics: Posted by Jay_Ki — Mon Feb 23, 2026 1:23 am


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2026-02-21T23:01:25+00:00 2026-02-21T23:01:25+00:00 https://cloudcompare.net/forum/viewtopic.php?p=31823#p31823 <![CDATA[Issues, bugs, etc. • Re: 2.14 beta can't read .glb file.]]> https://www.cloudcompare.org/release/Cl ... up_x64.exe

(sadly it's not signed with a certificate, so you may have to convince Windows that it's safe to run)

Statistics: Posted by daniel — Sat Feb 21, 2026 11:01 pm


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