Extract seed points.

RE: Extract seed points.

Giorgos DAMASKINAKIS — Fri, 22 Oct 2021 11:56:22 GMT

Finaly after the upgrade to Update 16, the Context Capture Editor has resolved the problem. The same 3sm model inported to the newest version makes the extraction ok!

Thank you Oto for your advice.

RE: Extract seed points.

Oto — Fri, 22 Oct 2021 09:29:39 GMT

Then most easy would be in this case export spare points and import them directly as Terrain. Unfortunately this requires at least OpenSite or OpenRoads as Contextcapture Editor still doesn't have Terrain tools. Three features are missing from Contextcapture Editor to be useful in real-life workflows - need Survey module, Terrain and Materials. Now it is not possible to create some needed output formats requiring additional softwae which is not reasonable and if nothing changes Contextcapture will be less competitive in the future.

RE: Extract seed points.

Giorgos DAMASKINAKIS — Thu, 21 Oct 2021 17:36:29 GMT

I use seed points for ground extraction.

3SM from reality mesh is a surface with geometry that I don't know how to use in a third party topographic cad software.

Point clouds are too heavy for me.

The goal is a light simplified 2 and 1/2 d ground information, to produce contour lines be printed to a parer, made by seed points and other break lines that are extracted from the 3d model.

Contour lines as a 3d polylines would be ok also but consisted of 3d points, not thousands of them.

A simplified ground is the result to achieve using a software that cannot use 3d face but polylines and points only.

RE: Extract seed points.

Giorgos DAMASKINAKIS — Thu, 21 Oct 2021 17:34:57 GMT

I use seed points for ground extraction.

3SM from reality mesh is a surface with geometry that I don't know how to use in a third party topographic cad software.

Point clouds are too heavy for me.

The goal is a light simplified 2 and 1/2 d ground information, to produce contour lines be printed to a parer, made by seed points and other break lines that are extracted from the 3d model.

Contour lines as a 3d polylines would be ok also but consisted of 3d points, not thousands of them.

A simplified ground is the result to achieve using a software that cannot use 3d face but polylines and points only.

RE: Extract seed points.

Oto — Thu, 21 Oct 2021 14:02:21 GMT

Not sure why you need seed points. Seed points are used for ground extraction process so it can extract 3sm terrain from reality mesh.

Workaround is to produce point cloud from Contextcapture and use that to create new 3sm terrain in Contextcapture Editor. There is an option under reality model attachment dialog to do that.

Another option is to extract sparse automatic tie points as pointcloud and use that - https://communities.bentley.com/products/3d_imaging_and_point_cloud_software/f/contextcapture-descartes-pointools-forum/180665/python-api-contextcapture-automatic-tie-point-export

or this approach:

https://communities.bentley.com/products/3d_imaging_and_point_cloud_software/f/contextcapture-descartes-pointools-forum/151151/contextcapture-convert-pose-metadata-to-csv

P.S.

[quote userid="860036" url="~/products/3d_imaging_and_point_cloud_software/f/contextcapture-descartes-pointools-forum/221076/extract-seed-points/678123"]So, I don't know If I can download a newer version of the program. I'll try it anyway.[/quote]

You can download it and it will run not sure why Bentley allows to upgrade CONNECT editions for free as it shouldn't be so.

RE: Extract seed points.

Giorgos DAMASKINAKIS — Thu, 21 Oct 2021 13:40:45 GMT

Thank yoy for your answer Oto,

I am a non select user, I just have a perpetual license. So, I don't know If I can download a newer version of the program. I'll try it anyway.

But I,m afraid i don't understand the rest, what is workaround.

The only thing I have is the photos and the 3mx model made by them from Context Capture.

Should I run Context Capture to make a point cloud? And then what? I,m not very familiar with Editor. I just managed to learn how to extract seed points from a project. This is actually what I need, the seed points.

Do you suggest to run the model again?

I converted 3mx to dsm and tried extracting seed points , it took many hours to do it and finally crashed.

Mabe it is something wrong with the 3mx model, althouh it looks good.

Something else, by mistake I silenced this conversation, can I open the messares again?

RE: Extract seed points.

Oto — Thu, 21 Oct 2021 09:55:13 GMT

Anyway to report this issues you will nedd to try it in latest version.

But to create a terrain you can use workaround and ceate a 3SM terrain from scratch using point cloud.