Processing of uniform surfaces.

[Rango986]

Hi,

I’m having trouble meshing most of the surface of a wind turbine. The alignment process was successful, but the sparse cloud shows very little detail of the turbine itself—only the surrounding area and a few parts of the turbine are visible. It seems the alignment relied primarily on the surroundings and metadata.

The dataset was captured using a P1 camera with excellent distance and overlap parameters, but the turbine surface is smooth, white, and mostly uniform, with very few visible features or texture There are 2700 images in total.

Is there a way to generate a mesh from this dataset, or alternatively, to create something like an orthophoto or another useful output?

I’m looking for the best way to make use of the existing data or improve workflow for data capturing in similar scenarios.

Thanks.

[OndrejTrhan (otrhan)]

Hello @Rango986
To process such dataset could be problematic for photogrammetry, as you are missing the important features.
There are some workarounds, how to process such objects, but probably they won’t work for you.

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Hi there, I need a little help How do I get a flat surface from an original flat surface object an not this rough surface that I got ? What setting should I use to get something better, more as the original that I have today? Thanks in advance [Captura de tela 2024-09-16 151455]

Flat Surface Problem

Hello, I’m trying to capture a completely flat surface (Like a basketball floor). Is it possible to tell Reality Capture that a surface is flat? Alignment seems okay to my eyes but when I created a mesh, it’s too bumpy. I import a flat plane for texturing, however texture is also messed up and blurry (Especially on the bumpy areas). I’ve read featureless surfaces may cause this but is it the alignment itself faulty here? How can I tackle this issue in general? I tried adding GCPs to floor and …

Photogrammetry recommendations for simulations creators

We are frequently asked to identify resources, guidelines and starting points when it comes to leveraging Reality Capture to create rich environments based on the real world by Unreal Engine simulation creators. While the information is already available in the forums and delivered by tech writers and documentation teams, it looked like a where to start was missing. [2023-11-13 10_47_11-RealityCapture to Unreal Engine 5 _ Epic Developer Community] This short post is meant to simply orient yo…

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I recently tried out scanning an object for a brand we’re working for, I thought adding something 3D will give us a cool edge. So far, I’ve photographed the object (I’ll attach pictures also). I used one globe lantern lighting the object from above, and then a small light on the top of the camera to light the sides. I don’t think this worked too well and will change next time.   I also flattened the images, I watched a YT video and they said to flatten them so you don’t get crazy highlights…

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An intriguing hint from http://steamcommunity.com/games/250820/announcements/detail/117448248511523471 : Something “…  that’s proved incredibly useful is [an] ability to project photos on to another mesh. I’ve cleaned up a number of rough architectural scans by essentially tracing around the noisy geometry in a modelling program, then reimporting the super-clean mesh … Since I kept the scale and alignment the same, I could get it to reproject the photos on to my new UVs - resulting in low-poly,…

I suppose the best option here will be the combination with the laser scan data.

[Rango986]

Hi @OndrejTrhan,

Thank you for detailed answer.
I was hoping that there is a way to “force” RC to make some kind of mesh without involving laser scans, does not have to be perfect since it would be used mostly as reference for images -a t least for now.
I managed to achieve something better using DJI TERRA trial, but I would prefer to stay within RC.

While working on this, I had 2 errors, could you help me understand what happened.

Error 1 – During alignment, there were no corrupt images, and I had cleared the cache. The issue was only resolved when I started a new project using the same images. I also tried both default and alternative settings.

Error 2 - During meshing. Some parts were meshed, others were green.

[OndrejTrhan (otrhan)]

Hi @Rango986
Are you able to reproduce the first issue? It can happen, when there is quite a lot of control points. Are you using some in your project?
The error 2 could appear, when the reconstruction settings are not ideal. Can you check this post with possible solutions: Error when modeling in Normal mode, but not in Preview - #2 by OndrejTrhan?

[Rango986]

Hi,

There is no CPs or GCPs in the project.
I couldnt replicate the same problem with meshing but I got another.

I restarted meshing several times, and every time I tried to exclude mentioned image from meshing, and it just pops up with another.

I will try with your suggestions.

[OndrejTrhan (otrhan)]

Can you also try to apply clear cache and application reset?
Have you moved those images?

[Rango986]

Hi,

None of the images were moved, and cache was cleaned.

I reset all setings, but not the application.
Shift + Start does not seem to work now when is used via Epic launcher.

I tried with some suggestions in linked post and restarted, lets see how it goes.

[OndrejTrhan (otrhan)]

It should work also with the Launcher.
If not, you can try to use CLI commands for reset.