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by daniel
Fri Sep 15, 2017 6:38 am
Forum: Questions
Topic: Align two clouds and preserve correct elevations
Replies: 1
Views: 45

Re: Align two clouds and preserve correct elevations

Normally, if one of your cloud is already correctly positioned, then it should be used as 'reference', and you should only move the other cloud. Either manually indeed, or with the Point-pair alignment tool, or the Fine registration (ICP) tool. See http://www.cloudcompare.org/doc/wiki/index.php?titl...
by daniel
Fri Sep 15, 2017 6:35 am
Forum: Questions
Topic: M3C2 Distance Direction
Replies: 1
Views: 22

Re: M3C2 Distance Direction

M3C2 outputs signed distances. And they are calculated along the direction of the normal (for each point). The '+Z' option is just to help CC orients the normals (here they will all roughly point upward). If you want purely vertical normals / displacement, then you have to select the 'vertical' opti...
by daniel
Thu Sep 14, 2017 6:21 pm
Forum: Questions
Topic: Malfomed File
Replies: 1
Views: 23

Re: Malfomed File

Hum, that's strange. Especially since STL files are only able to store coordinates on 32 bits, therefore if there are indeed points with big coordinates, the precision is already lost... Anyway, I don't think the error has anything to do with the Global Shift mechanism. Can you try to say 'no' to th...
by daniel
Thu Sep 14, 2017 5:26 am
Forum: Questions
Topic: M3C2-Coordinate System
Replies: 1
Views: 30

Re: M3C2-Coordinate System

Yes, the original units are always preserved. The Global Shift or the registration process don't change them. So it should be feets indeed.
by daniel
Wed Sep 13, 2017 2:35 pm
Forum: Issues, bugs, etc.
Topic: File overwritten in command line mode
Replies: 1
Views: 37

Re: File overwritten in command line mode

Now to the problem: CloudCompare is too fast


Never thought someone will complain about that ;)

I'm joking, this is a bad 'feature' indeed :D. I'll see what I can do.
by daniel
Mon Sep 11, 2017 8:29 pm
Forum: Issues, bugs, etc.
Topic: Problem: Surface of revolution analyisis plugin
Replies: 2
Views: 47

Re: Problem: Surface of revolution analyisis plugin

Okay, I fixed the bug. You can download the latest 2.9 beta release online.
by daniel
Mon Sep 11, 2017 5:34 pm
Forum: Questions
Topic: Alignment for heavily eroded surfaces
Replies: 4
Views: 70

Re: Alignment for heavily eroded surfaces

I just realized: '1' for the 'significant change' scalar field means that all points are considered as being a 'significant change' actually ;D. I did a quick and dirty registration (ICP with 30% of overlap - I didn't know if you had already registered the clouds). It gave me a 0.00045 RMS. And then...
by daniel
Sat Sep 09, 2017 12:40 pm
Forum: Questions
Topic: Alignment for heavily eroded surfaces
Replies: 4
Views: 70

Re: Alignment for heavily eroded surfaces

1) The ICP alignment tool will indeed try to minimize the distances between the two clouds (and you'll get therefore distances centered about 0)... apart if you set the 'overlap' parameter correctly. If you set it to 10% or 20%, then only the closest points will be used for registration. Of course, ...
by daniel
Sat Sep 09, 2017 12:21 pm
Forum: Questions
Topic: Wear calculation value in Microns
Replies: 1
Views: 30

Re: Wear calculation value in Microns

Have you simply tried to compute the distances? (Tools > Distances > C2C or C2M). If you have two meshes, make sure to sample a lot of point on one model and then compute the C2M distances. See http://www.cloudcompare.org/doc/wiki/index.php?title=Distances_Computation . And you'll get the distances ...
by daniel
Thu Sep 07, 2017 8:33 am
Forum: Issues, bugs, etc.
Topic: Color Scale
Replies: 2
Views: 94

Re: Color Scale

That's a good idea, but you can't image how many hairs I loose when I fight with the code of the color scale (I'm bold now ;). One way to overcome this is to create a custom 'absolute' color scale for which you can specify the exact range AND the labels that should appear next to it: see http://www....

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