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2015-08-25 05:32 AM
2015-08-25 01:16 PM
Oscar wrote:Graphisoft do not discuss future development plans on public forum, nor do they make any claims/promises that such as such a feature will be in the next release, partly for competitive reasons, partly because of the nature of software development, where last minute bugs can kill a whole new version or feature.
Hi everyone,
As you're probably all aware, ArchiCAD 19 has the added new feature of importing point clouds. This is a quick perspective from someone who works primarily with point clouds extensively. Revit can import point clouds once they're converted inside recap into their own format, as the density and size of the point cloud increases they become horrible to work with and modelling from them can be tedious with no perspective views, even in plan and section.
My first issue is that .e57 format is rarely attributed to Leica products and a pain to export from Leica scanners, this means we're left with .xyz ascii files and these files for 10gb point clouds can be huge. What would be really nice to see is the ability to import in more standard formats than an .e57 and xyz. Is this an upcoming feature?
This leads me onto the next part of RGB values, when capturing data from point clouds the RGB value is typically not taken when processing large amounts of scans, in an ideal world every time we scan we would take colour imagery for the RGB values but realistically this adds double the time to the work required and so is rarely used. Intensity values give enough information within the scan to distinguish the data. This is a missing option in the Point Cloud feature, without RGB values the intensity values don't come through and once again modelling with the point cloud is next to impossible. Will there be any ability in the future to import the intensity values along with the cloud? I understand there is no agreement with leica to work on their propriety data formats but will there be in the future?So you are saying that instead of RGB values a Point Cloud may contain only an intensity value? So in such a case the imported Point Cloud is monochrome, but the different points have different color intensity values?
Then this leads onto the problem of coordinate systems and Archicad, typically in Revit you work on project local with the survey point the link to say for example MGA and AHD. In ArchiCAD it has no issues dealing with large numbers in distance but sadly for some reason the Point Clouds never have the ability to come in using the coordinates it has stored, this is a big issue when attempting to provide correct drawings and models. I assume this is because the point cloud is converted?I had the impression that this can be achieved by using the "Place Point Cloud Origin at Project Origin" option achieves that as shown in this clip:
2015-08-31 05:22 AM
laszlonagy wrote:This does work BUT if you ever move the point cloud (e.g by accident) you are stuffed and have to reimport the point cloud all over again.Oscar wrote:I had the impression that this can be achieved by using the "Place Point Cloud Origin at Project Origin" option achieves that as shown in this clip:
Then this leads onto the problem of coordinate systems and Archicad, typically in Revit you work on project local with the survey point the link to say for example MGA and AHD. In ArchiCAD it has no issues dealing with large numbers in distance but sadly for some reason the Point Clouds never have the ability to come in using the coordinates it has stored, this is a big issue when attempting to provide correct drawings and models. I assume this is because the point cloud is converted?
https://youtu.be/QfOMxjFcIOo?list=PLnXY6vLUwlWWW2G9Ve7MxoLW2tZ9TWFMW&t=32
2015-09-23 09:02 PM