Search found 156 matches

by Dimitri
Thu Nov 24, 2011 9:29 am
Forum: Requests, new functionalities
Topic: [50%] Logarithmic scale for scalars + normal visualization
Replies: 1
Views: 3299

[50%] Logarithmic scale for scalars + normal visualization

Hi Daniel, ok this is soon Christmas, so it's time to make a wish list ;-) . Something that could be extremely useful : remember the scales (displayed and saturation) and coloramp parameters used to display one type of scalar (provided that the user has modified the default one). Because, when when ...
by Dimitri
Wed Nov 23, 2011 9:29 am
Forum: Issues, bugs, etc.
Topic: Crash on various operation with very large clouds
Replies: 3
Views: 3904

Crash on various operation with very large clouds

Hi Daniel, I've been trying to use CC to subsample (with a space constraint) large point clouds (55 millions points, even 22 millions points), but I systematically get a crash (after the octree was built and before the phase of sub-sampling). Meanwhile, it's easy to randomly subsample to get the clo...
by Dimitri
Tue Sep 06, 2011 2:50 am
Forum: Issues, bugs, etc.
Topic: Issue with displaying negative scalars
Replies: 9
Views: 10790

Re: Issue with displaying negative scalars

Hi Daniel,

true : in non absolute mode, you have the correct min and max, and I can manage to have the white centered around 0 (but you have to play with the number of intervals and choosing well the min and max color saturation), but I still have some rounding errors :
Issue_CC2.jpg
Issue_CC2.jpg (140.51 KiB) Viewed 10714 times
by Dimitri
Mon Sep 05, 2011 12:55 am
Forum: Issues, bugs, etc.
Topic: Issue with displaying negative scalars
Replies: 9
Views: 10790

Re: Issue with displaying negative scalars

Hi Daniel, excellent. Thanks for the great update. Minor issues : . There seems to be an issue with the symmetry of the color scale when the absolute saturation is on (visible for the blue-white-red color ramp). Here you can note that the white scalars correpond to 0/0.1 and 0.1/0.2 while it should ...
by Dimitri
Tue Aug 23, 2011 5:50 am
Forum: Questions
Topic: PCL library and binary format
Replies: 11
Views: 38542

PCL library and binary format

Hi All, as any of you used the PCL library : http://www.pointclouds.org/ What'd you think of their file format ? http://pointclouds.org/documentation/tutorials/pcd_file_format.php#pcd-file-format With the work we're doing with Nicolas Brodu, we're now generating points clouds with a lot of scalars a...
by Dimitri
Tue Aug 23, 2011 4:59 am
Forum: Issues, bugs, etc.
Topic: Issue with displaying negative scalars
Replies: 9
Views: 10790

Re: Issue with displaying negative scalars

Hi Daniel, ok, now I understand better how it works, and with the solution I suggest there's no way to change the saturation near 0 (this would require a 5th central slider for the specific case of negative values, and it would be quite cumbersome). Indeed there's no simple solution with only 2 slid...
by Dimitri
Tue Aug 09, 2011 1:15 am
Forum: Issues, bugs, etc.
Topic: Issue with displaying negative scalars
Replies: 9
Views: 10790

Re: Issue with displaying negative scalars

Hi Daniel, I'm back on this issue as we are currently developing a signed difference software and we need to visualize negative and positive scalars. The problem is when you want to display scalars that are mostly negative, you cannot use the entire color scheme. In the best case, you're limited to ...
by Dimitri
Fri Jul 01, 2011 12:15 pm
Forum: Issues, bugs, etc.
Topic: [FIXED] Large coordinates does not display properly
Replies: 11
Views: 11529

Re: Large coordinates does not display properly

Thanks Daniel, that's great !
by Dimitri
Wed Jun 22, 2011 1:26 am
Forum: Issues, bugs, etc.
Topic: height grid projection issue [RESOLVED]
Replies: 1
Views: 3465

height grid projection issue [RESOLVED]

Hi, I did not try this option for sometime (it worked great the last time I used in 2010), but now it seems to be quite buggy. First, if a new cloud is to be generated, it does work : a new cloud is created but there's only 4 points in it (i double checked that the resolution i used was consistent w...
by Dimitri
Wed Jun 22, 2011 1:19 am
Forum: Issues, bugs, etc.
Topic: [FIXED] Large coordinates does not display properly
Replies: 11
Views: 11529

Re: Large coordinates does not display properly

HI Daniel, the solution you propose is great. I like the fact that the translation is stored in the file (I tend to loose these kind of information with time ....;-). Maybe it's time to create a new type of binary file which can hold this kind of information as well as more than 1 scalar ? Maybe an ...