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by matknaak
Sat Dec 30, 2017 10:30 pm
Forum: Questions
Topic: Registration via Latitude/Longitude/Elevation (or SPCS)
Replies: 4
Views: 189

Re: Registration via Latitude/Longitude/Elevation (or SPCS)

Hi Daniel & Igeis Faro Scene certainly allows to export georeferenced point clouds no matter which format. If I understand Igeis corectly, he wants to detect the changes between the two point clouds by having them georeferrenced previously using surveyed spheres, and then calculate the differenc...
by matknaak
Fri Dec 22, 2017 6:05 am
Forum: Questions
Topic: Intensity values
Replies: 3
Views: 189

Re: Intensity values

Hi Miktha, below is a graph showing intensity versus distance of the scanner to the scanned object. What I have done is that I used a box with four different surfaces and placed it at different distances to the scanner. For each distance I took a scan and plotted the average intensity for each surfa...
by matknaak
Sat Dec 16, 2017 8:39 am
Forum: Questions
Topic: Intensity values
Replies: 3
Views: 189

Re: Intensity values

Hi mikmik, very good question. So you are after correcting the intensty value of laserscan data in order to use the value as a proxy for differentiating material properties of the scanned object (such as lithologies in rock outcrops). First, this can only work on an individual scan , not on a pointc...
by matknaak
Wed Aug 30, 2017 11:00 am
Forum: Plugins
Topic: qCANUPO (classifier files, etc.)
Replies: 91
Views: 21595

Re: qCANUPO (classifier files, etc.)

Hi, when you say that your mudstone and sandstone is easily distinguishable by photos, that means they have different colours etc. To my understanding CANUPO plugin classifies based on geometries not further attributes. Maybe try to use the intensity value of your TLS data to discriminate between li...
by matknaak
Fri Jun 30, 2017 12:56 pm
Forum: Questions
Topic: Polyline cornes
Replies: 2
Views: 236

Re: Polyline cornes

Hi Jakob, maybe I did not fully understand your problem, thus, this might be a silly suggestion, but why don't you use cloudcompare to do the terrain model (using "Rasterize" tool), export the dtm as a raster and clip the raster in your CAD. This might be easier and most likely faster too....
by matknaak
Fri Jun 30, 2017 8:54 am
Forum: Plugins
Topic: export data through FACET
Replies: 1
Views: 573

Re: export data through FACET

Hi Layla244, please allow me to comment on your questions 2) re normal computation - from what you discribe you want to do, choosing "plane" is good. Re preferred orientation - if your rock face is generally facing x, y or z then you could choose accordingly, if you don't know, you can cho...
by matknaak
Wed Jun 28, 2017 9:41 am
Forum: Questions
Topic: Create Plane Tool
Replies: 1
Views: 572

Create Plane Tool

Hi, this is more a note than a question. I have been playing with the "Create Plane Tool" and experienced the following: 1. created a plane (dip=0, dipdir=0, width=3, height=10) 2. I edited the plane changing dip and dip direction (dip=30, dipdir=60, width=3, height=10) 3. I edited the pla...
by matknaak
Mon Jun 26, 2017 4:56 am
Forum: Questions
Topic: Saclar Field?
Replies: 3
Views: 752

Re: Saclar Field?

Hi Rui, as mentioned before, if you are the lucky owner of an expensive scanner, the software that comes with the scanner may allready have options to correct the intensity values by distance, or atleast your scanner may allow settings without the use of such filters as discribed before. If you have...
by matknaak
Fri Jun 23, 2017 5:13 am
Forum: Questions
Topic: Saclar Field?
Replies: 3
Views: 752

Re: Saclar Field?

Hi, scalar fields are a very usefull and powerfull part of CC - they are simply attributes that where generated by your scanner or the scanner software. You can also generate new scalar field or calculate scalar fields in CC. A good example is that you can convert the x,y, z coordinates into scalar ...
by matknaak
Fri May 05, 2017 11:31 am
Forum: Questions
Topic: spacing of planes
Replies: 0
Views: 602

spacing of planes

Hi, am currently a bit lost with the following problem. I have a point cloud of a natural rock outcrop with say one clearly visible joint set. These joints are obvious as planar features in the point cloud or in subsequent facets (facet plugin) or planes in point-cloud-shape-detection. I like to sys...

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