logo
NOTICE:  This is the new PunchCAD forum. You should have received an email with your new password around August 27, 2014. If you did not, or would like it reset, simply use the Lost Password feature, and enter Answer as the security answer.
Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error
Different results based on resolution - Cloud Compare
Options
Go to last post Go to first unread
Previous Topic Next Topic
UGMENTALCASE  
#1 Posted : Wednesday, July 26, 2017 11:06:17 AM(UTC)
UGMENTALCASE

Rank: Senior Member

Joined: 3/21/2017(UTC)
Posts: 946
Man
United Kingdom

Thanks: 46 times
Was thanked: 303 time(s) in 205 post(s)
Evening all,

I've been editing some of the files in ViaCAD folders for resolution and line thickness and all this, and just trialled a different resolution file with quite interesting results.
I'm comparing 2 surfaces. I compared these in NX 9 using the deviation tool and got the results attached. I then ran the same thing in ViaCAD Pro V10 with PowerPack, and used Cloud Compare. You can see on the attached image the difference in results between the two resolution files. The one which measured more points, is closer to the NX 9 results. I've taken the resolution down to 0.02 (from 4.5 original) on the super fine setting, and the visual results are pretty dam good!
But why would I get different results in cloud compare? Granted they are not much different, but I'm inclined to trust the one from NX, so adjusting resolution could be important?

Edited by user Wednesday, July 26, 2017 11:09:25 AM(UTC)  | Reason: Not specified

File Attachment(s):
nx output.txt (2kb) downloaded 6 time(s).
UGMENTALCASE attached the following image(s):
original res.jpg (65kb) downloaded 7 time(s).
0.02 res.jpg (134kb) downloaded 5 time(s).

You cannot view/download attachments. Try to login or register.
Back to top
Tim Olson  
#2 Posted : Wednesday, July 26, 2017 12:18:26 PM(UTC)
Tim Olson

Rank: Senior Member

Joined: 2/2/2007(UTC)
Posts: 5,447
United States

Was thanked: 498 time(s) in 352 post(s)
>>so adjusting resolution could be important?

The Coordinate Compare tool in PowerPack Pro compares a point cloud to a NURB part. If you select a mesh/surface/solid the point cloud is taken from the facet display list which is a function of the resolution. To get the best resolution, use Super Fine : Precise Facets.

You can also do Edit : Change Object Type : Mesh to get the Mesh Parameters dialog and further control the resolution.If you hit cancel, the display mesh on the solid is left at the custom resolution.


Tim

Edited by user Wednesday, July 26, 2017 12:19:09 PM(UTC)  | Reason: Not specified

Tim Olson
IMSI Design/Encore
Back to top
Users browsing this topic
Guest
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.

Powered by YAF.NET 2.1.2 | YAF.NET © 2003-2024, Yet Another Forum.NET