Deviations in width of hallway

[landmeterbeuckx]

Hi,
I have a project where there is a hallway scanned but there is a tolerance of 1.83m between points on both sides of the hallway.

Plastering wasn't done up to standards so there are places where it is 1.82m and others 1.84m

How would i tackle this so i can color my pointcloud green where it is fine but red where it is over tolerance.

[GCFdesign]

Navisworks could likely help.

Otherwise you could create the hallway as a solid, populate that solid with points within CC, then compare clash, or likely clash your points against the desired hallway solid within CC.

[Scott.Warren]

Creating a local datum where its X-Y plane matches the design/average plane of your wall is a way I've done it. Then your Z axis becomes your deviations from a expected value.

Not ideal, but it can work. Just need to change your elevation banding to meet the deviation your looking for. obviously doesn't work on non-planar surfaces so well.

Cyclone 3DR is my weapon of choice for something like this, if I had the license .

[max72]

Cloudcompare offers some tools.
You might create a ideal model and do a point to mesh distance, but I'm not sure it fits your needs.
If you want to check the distance between two walls, and they are straight, you can orient the hallway along an axis, cut the two walls in two different datasets and do cloud to cloud a distance, keeping only on the the vectors. Say you orient the hallway along y axis, you perform distance check in x direction only.
You can then filter the results.

Massimo

[GCFdesign]

It shall also depend on where the idealised hallway is intended to exist.
In terms of analysis, such an idealised hallway surface would need to be created and located, such that your captured scan points are then subsequently analysed to the desired surface.

[sim.herrod]

Cyclone 3DR is my weapon of choice for something like this, if I had the license .

3DR is what I'd use. Fortunately, we have a license.

[landmeterbeuckx]

I'm trying with Cloudcompare now. NBut i'm no expert on CC. Must invest some time for it.

[Leandre Robitaille]

I would use Autocad. Rotate the pointcloud so the wall you want to study is flat to the general UCS and change the collors to elevation, tune the colors. The X Y axis of the UCS would be your virtual plane that you would use as reference. This might involve a bit of 3d manipulation autocad skills to get a good setup tough.

Other option is to create a 3d solid as a reference in autocad and measure offset with a cloudcompare by computing distances. In autocad, units in meter, draw a line at the reference point and extrude it following the Z axis. Export that as a .sat file (in other export) you can then import the .sat in cloudcompare and clash it with the pointcloud.

I do however prefer the autocad elevation for this but it might be harder to do for someone not used to those type of 3d manipulations in autocad.
Good luck!

[VXGrid]

Hi,
I have a project where there is a hallway scanned but there is a tolerance of 1.83m between points on both sides of the hallway.

Plastering wasn't done up to standards so there are places where it is 1.82m and others 1.84m

How would i tackle this so i can color my pointcloud green where it is fine but red where it is over tolerance.

Mh you can try to achieve that with PointCab Origins:
Activate the delta tool and the PDF export when doing a section.
Generate the section on the left wall, extend the bounding box over the right wall, set the colours and bounding boxes accordingly, rinse and repeat for the other side.
In the PDF on the last page there is in addition a % of how many points are within the generated bins.


Guess it could look like this:
(In my case everything between [4,3; 4,38) is red and everthing between [4,38; 4,39) is green.

deltaOrigins.png

Personally I think I would use red and blue - not red and green

[landmeterbeuckx]

Hi,
I have a project where there is a hallway scanned but there is a tolerance of 1.83m between points on both sides of the hallway.

Plastering wasn't done up to standards so there are places where it is 1.82m and others 1.84m

How would i tackle this so i can color my pointcloud green where it is fine but red where it is over tolerance.

Mh you can try to achieve that with PointCab Origins:
Activate the delta tool and the PDF export when doing a section.
Generate the section on the left wall, extend the bounding box over the right wall, set the colours and bounding boxes accordingly, rinse and repeat for the other side.
In the PDF on the last page there is in addition a % of how many points are within the generated bins.


Guess it could look like this:
(In my case everything between [4,3; 4,38) is red and everthing between [4,38; 4,39) is green.
deltaOrigins.png

Personally I think I would use red and blue - not red and green

I'll give it a shot Martin, having an Origins license of course