Slope detection
-
- V.I.P Member
- Posts: 394
- Joined: Thu Jan 17, 2008 8:18 pm
- 16
- Full Name: Christopher Byrne
- Company Details: Murphy Geospatial
- Company Position Title: Head Of Dept Special Projects
- Country: Ireland
- Linkedin Profile: Yes
- Has thanked: 9 times
- Been thanked: 20 times
Slope detection
Hey Guys,
Has anyone developed a technique (preferably autiomated) for detecting slopes in scan data. I have a large area to analyse & I need to detect any slopes with a 1:3 gradient or greater. I can use manual methods to work out slopes at specific areas but am thinking of a more automated approach using surface comparisson or something. I have Riegl RiSCAN Pro and Leica Cyclone at my disposal. I am willing to test out other packages that may help speed things up.
cheers,
Chris
Has anyone developed a technique (preferably autiomated) for detecting slopes in scan data. I have a large area to analyse & I need to detect any slopes with a 1:3 gradient or greater. I can use manual methods to work out slopes at specific areas but am thinking of a more automated approach using surface comparisson or something. I have Riegl RiSCAN Pro and Leica Cyclone at my disposal. I am willing to test out other packages that may help speed things up.
cheers,
Chris
-
- V.I.P Member
- Posts: 1236
- Joined: Mon Jan 04, 2010 7:51 pm
- 14
- Full Name: Jed Frechette
- Company Details: Lidar Guys
- Company Position Title: CEO and Lidar Supervisor
- Country: USA
- Linkedin Profile: Yes
- Location: Albuquerque, NM
- Has thanked: 62 times
- Been thanked: 219 times
- Contact:
Re: Slope detection
Is there any reason you can't just export the points, create a DEM, and calculate the slope from that?
Jed
-
- V.I.P Member
- Posts: 394
- Joined: Thu Jan 17, 2008 8:18 pm
- 16
- Full Name: Christopher Byrne
- Company Details: Murphy Geospatial
- Company Position Title: Head Of Dept Special Projects
- Country: Ireland
- Linkedin Profile: Yes
- Has thanked: 9 times
- Been thanked: 20 times
Re: Slope detection
Hey Jed,
As I mentioned, I can easily do this for discrete areas. I have a very large area with potentially hundreds of slopes to check.
Cheers,
Chris
As I mentioned, I can easily do this for discrete areas. I have a very large area with potentially hundreds of slopes to check.
Cheers,
Chris
- Jason Warren
- Administrator
- Posts: 4224
- Joined: Thu Aug 16, 2007 9:21 am
- 16
- Full Name: Jason Warren
- Company Details: Laser Scanning Forum Ltd
- Company Position Title: Co-Founder
- Country: UK
- Skype Name: jason_warren
- Linkedin Profile: No
- Location: Retford, UK
- Has thanked: 443 times
- Been thanked: 246 times
- Contact:
Re: Slope detection
Have you tried Autodesk Civil 3D Slope Analysis for this task?
Jason Warren
Co_Founder
Dedicated to 3D Laser Scanning
LaserScanningForum
Co_Founder
Dedicated to 3D Laser Scanning
LaserScanningForum
-
- V.I.P Member
- Posts: 394
- Joined: Thu Jan 17, 2008 8:18 pm
- 16
- Full Name: Christopher Byrne
- Company Details: Murphy Geospatial
- Company Position Title: Head Of Dept Special Projects
- Country: Ireland
- Linkedin Profile: Yes
- Has thanked: 9 times
- Been thanked: 20 times
Re: Slope detection
Hi Jason,
Thanks for that. I'll have a look. I'm also lookingo Rhino Terrain which a friend told me has slope analysis tools.
Cheers,
Chris
Thanks for that. I'll have a look. I'm also lookingo Rhino Terrain which a friend told me has slope analysis tools.
Cheers,
Chris
-
- V.I.P Member
- Posts: 1236
- Joined: Mon Jan 04, 2010 7:51 pm
- 14
- Full Name: Jed Frechette
- Company Details: Lidar Guys
- Company Position Title: CEO and Lidar Supervisor
- Country: USA
- Linkedin Profile: Yes
- Location: Albuquerque, NM
- Has thanked: 62 times
- Been thanked: 219 times
- Contact:
Re: Slope detection
I"m probably missing something obvious but I'm not sure why that makes a difference. Although you would have to export the points it would be easy to make a geoprocessing tool that ingests the points, builds a DEM, makes a slope map, and thresholds the slope map to make a new map containing areas with slopes greater than 1:3. It seems like a classic GIS analysis.christopherbyrne18 wrote:I have a very large area with potentially hundreds of slopes to check.
Jed
-
- I have made 20-30 posts
- Posts: 21
- Joined: Fri Oct 21, 2011 8:43 am
- 12
- Full Name: Benjamin
- Company Details: Maptek Pty Ltd
- Company Position Title: 3D Laser Scanning Consultant
- Country: Australia
- Linkedin Profile: No
- Location: Australia
- Contact:
Re: Slope detection
Hi Chris,
You could consider using I-Site studio with the Geotechnical Module. You would need to generate a DTM and use dip angle instead of gradient though. PM me if you want more information. I can put you in contact with the I-Site person in WA who can give you a demo.
You should also give Vulcan support a call. I'm no expert with Vulcan so there might be an easy way to do it in there.
You could consider using I-Site studio with the Geotechnical Module. You would need to generate a DTM and use dip angle instead of gradient though. PM me if you want more information. I can put you in contact with the I-Site person in WA who can give you a demo.
You should also give Vulcan support a call. I'm no expert with Vulcan so there might be an easy way to do it in there.
You do not have the required permissions to view the files attached to this post.
-
- V.I.P Member
- Posts: 394
- Joined: Thu Jan 17, 2008 8:18 pm
- 16
- Full Name: Christopher Byrne
- Company Details: Murphy Geospatial
- Company Position Title: Head Of Dept Special Projects
- Country: Ireland
- Linkedin Profile: Yes
- Has thanked: 9 times
- Been thanked: 20 times
Re: Slope detection
Hey Guys,
I ended up using Vulcan, our mine geology software to analyse the triangulation. It has a gradient shading tool that worked nicely. Jed, I mentioned the packages I had to hand and Arc map or GIS wasn't one of them, thanks for the tip anyway. Hey Benjamin, I have seen I-Site in the past, some nice tools but we won't be adding any more packages to the arsenal at the moment and Vulcan is made by the same people and did the job.
Cheers,
Chris
I ended up using Vulcan, our mine geology software to analyse the triangulation. It has a gradient shading tool that worked nicely. Jed, I mentioned the packages I had to hand and Arc map or GIS wasn't one of them, thanks for the tip anyway. Hey Benjamin, I have seen I-Site in the past, some nice tools but we won't be adding any more packages to the arsenal at the moment and Vulcan is made by the same people and did the job.
Cheers,
Chris