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Unroll a oblique cylinder shaped vault
Posted: Mon Feb 17, 2020 5:48 pm
by rai_gar
Hi! I can't get a decent result using the
unroll command on the vault of the image. This is a portion of an
oblique cylinder. I've made several attempts, but I think the problem is the non-straight axis of the cylinder. I also tried to rotate the surface so that it was a portion of a straight cylinder sectioned above and below, but I didn't get a good result.
Could you help me, please?
Thanks
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- Plan view
- 1.png (727.8 KiB) Viewed 5582 times
Re: Unroll a oblique cylinder shaped vault
Posted: Mon Feb 17, 2020 8:50 pm
by daniel
Indeed, I guess you need the cylinder to be straight (axis along X, Y or Z).
How is the cylinder before the unroll step? (there are some missing images sadly)
Re: Unroll a oblique cylinder shaped vault
Posted: Tue Feb 18, 2020 9:50 am
by rai_gar
Hi Daniel, thank you for your very quick response. Here are some clarifying images.
- vault.jpg (1011.7 KiB) Viewed 5383 times
Re: Unroll a oblique cylinder shaped vault
Posted: Wed Feb 19, 2020 8:50 pm
by daniel
Hum, have you tried to fit a cylinder on this cloud? (with the RANSAC shape detection plugin)
And then use this cylinder to deduce all the parameters? (and also to make the cloud "straight")?
Otherwise, don't hesitate to send me the cloud file so that I can try it on my side (admin [at] cloudcompare.org)
Re: Unroll a oblique cylinder shaped vault
Posted: Thu Feb 20, 2020 10:31 am
by rai_gar
Hi Daniel. I tried with the cylinder because I read this suggestion in another post, but I didn't get a good result.
Thank you very much for your availability.