TDR problem – Nvidia? How to handle it?

[AdSuwo]

Hello Everybody, I need inputs regarding TDR.

When opening the result of a Build Mesh, I got a TDR error. What is this and how to handle it?

Build Mesh parameters applied are Dense Cloud as the source, Arbitrary (3D), surface count High (2,483,000,000), interpolated, and calculate vertex colors.
The other parameters such as Dense Cloud quality, Depth Filter, Strict Volumetrict, and reuse Depth Maps options were greyed out.
It is the Build Mesh command from workflow, not through the Batch process. This procedure created a 3D Model Mesh with approximately 1,973,000,000 faces but experienced a TDR error when trying to open it.

The Dense cloud itself was produced with Ultrahigh quality with mild filtering and then filtered by confidence, which was reduced by around 50% points to become 9,546,404,254 points (points after filtering).

If this problem is due to the machine's performance, is changing Build Mesh parameters become the way out? For example, just use the Low surface count option (or lowered it down by using custom surface count).
Or it is better to choose Depth Maps as the source and Low surface count instead of Dense Cloud and High surface count options.

Many Thanks and regards.

[Alexey Pasumansky]

Hello Adiwan,

What type of project you are working on? Is it aerial survey or any kind of close-range scanning?

Please also specify what OS you are using and what GPU is installed?

I think that it may be problematic almost for any GPU to display almost 2 billions faces, what is the purpose of the target model in your case? You may consider using custom face count set to 100-200 millions or generate a tiled model instead.

[AdSuwo]

Hello Alexey, thank you for the prompt response.

My project is not an aerial survey but a kind of close-range scanning. The total picture I have is around 86,000. I split them into 7 smaller chunks and a final chunk, with enough overlapping each of them, having respectively 23,571 pictures, 24,683 pictures, 19,565 pictures, 14,595 pictures, 13,316 pictures, 15,651 pictures, 49,756 pictures, and the final chunk contains all of them together. It is quite consuming time and patience. Since this is a massive heritage building built in 700 CE, therefore involving many reliefs and details, making it more difficult to split them into more chunks than the above stated.

The recently running process is the one with 15,615 pictures with a data size exceeding 450 GB.

The computer we use has an Intel Xeon processor, and Quadro graphic card (P-2000), and is supported with 256 GB RAM. Agisoft Metashape Pro 1.8.3 is installed. We have not yet moved to 2.0 because of certain considerations and the excellence of this version in assisting us becomes one of the utmost reasons.

In my case, I need to analyze the antique measurement and proportion produced by the reconstruction of the target model. In other words, I need to have a solid and detailed 3D model, not the points, so I can research it and print it later.

Regarding your suggestions, what will happen if I reduced the face count set to 100 to 200 million? Would it reduce the quality drastically? By default, the parameter setting of the High count states 2,483,000,000 faces, the Medium has 828,000,000 faces, and the Low one has 268,000,000 faces. I kept the high faces as default and just started to create another one by trying the Medium faces setting (828,000,000), but still applied dense cloud as the source.

And what will happen if I use Depth Maps as the source instead of Dense Cloud?

I believe the other chunks above containing more pictures will have more faces.

What do you mean by generating a tiled model instead of the build-mesh? Do you mean directly going to, or generating the tiled model, and skipping or without processing the build-mesh? Is that okay? Because I thought the tiled model is the following or respective step after the build mesh process.
If that is possible, it will be an excellent way out for reducing the exhausting process.

And please Alexey, would you please provide me the guidance for the detailed steps, including the parameter settings?

Many thanks and regards,
Adiwan.