I was pointed at this informative video from Gleb Alexandrov who is showing how anyone with a suitable CUDA enabled machine can do some nice 3D object generation using all free open source tools - but principally Meshroom and Blender.
https://www.youtube.com/watch?v=j3lhPKF8qjU
The video has some useful tips about improving the generation of the model in Meshroom by inserting some custom steps into the standard path and then also goes into some considerable depth about
In my last entry I mentioned that Meshroom had been released. I had to borrow a friends machine with an nVidia card on it that would handle CUDA as the program will not run without it. The computations required to generate the 3D mesh from the photos are quite intense and with many photos it takes a lot of time. CUDA is the graphics card support which allows the Graphics Processing Unit (GPU) to handle that complex graphics based math instead of the normal CPU. Since GPUs are custom built for this
Time marches on and developers have been busy. There are some new photogrammetry apps out there and one looks particularly good.
Released (recently) in Aug 2018 a project my the name of Meshroom has frozen a build for release for both Windows and Linux.
If you head over to AliceVision website there are some links there to download the software as prebuilt binaries:
https://alicevision.github.io/#meshroom
Before you do however you should
Its been a while since I updated my blog about 3D mapping terrain.
As predicted, those tools to make denser point clouds have appeared in open tools:
http://blog.mapillary.com/update/201...n-opensfm.html
OpenSFM is a really good tool. Even before this update I have used it to generate quite dense point clouds of 3D models so this new development sounds interesting indeed.
Dont miss the link in there for OpenDroneMap.
Ok so we have the points, lets make a mesh - a polygon model of the building. In MeshLab clean up some of the stray points. You can do that by selecting points and deleting them. The selection icon is the one with three dots and the cursor arrow. Click that and drag out a box over some points and they turn red to show they are selected. The delete is on the far right which is the three dots and a triangle with a big X through it.
Once you have the vertices for the building without
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