Character animations are blurry

Omniverse Isaac Sim
1

Isaac Sim Version

4.5.0
4.2.0
4.1.0
4.0.0
4.5.0
2023.1.1
2023.1.0-hotfix.1
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Operating System

Ubuntu 24.04
Ubuntu 22.04
Ubuntu 20.04
Windows 11
Windows 10
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GPU Information

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Topic Description

Detailed Description

Using the AgentSDG class found at the path “isaacsim_4_5/tools/agent_sdg/sdg_scheduler.py” I created some recordings. However, the character animations are blurry, is it possible to eliminate the blurring?

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It’s an example.

This blurring there is also if I animate the character in a normal execution without replicator.

2

We’ve seen this issue in the past and it seems to be caused by some rendering blending settings. We will investigate and get back to you.

3

Any news?

4

Yes this is a common issue with fast moving object animation, and not enough time and gpu cycles to “clean up” the past frames. The denoiser is a time-dependent sampler and so it averages over several frames.

Is this a direct capture of the viewport, or is this from a rendered output? If you render it out using Movie Capture, you can add some longer “settle” and “render” time to the frame to get it to blend out better.

The main factor is seeing blurriness in the viewport is your GPU framerate or FPS. The faster your FPS, the faster it can resolve. So usually 30fps and up, is really good. Lower than that, it gets much worse. One way to deal with that is to lower the viewport resolution.

The other factor is lighting. It is much better with direct lighting, and much worse with indirect lighting.

This is only a factor in the realtime mode. In the path tracing mode, it is not present. However, some GREAT news, is that we have just released our brand new RTPT / Realtime 2.0 rendering engine, in the latest kit 107.03 version, available right now on GitHub. GitHub - NVIDIA-Omniverse/kit-app-template: Omniverse Kit App Template

I know this is Isaac Sim probably, but they will get it soon as well.

5

@michele.delledonne pulled from another thread, a suggestion was made regarding setting RTSubframes in carb setting. not sure if it’s something you could look into in the meantime:

6

Yes correct. Thanks @Simplychenable

If you rendering out with the Replicator / SDG output, you have increase the subframes when rendering out. But that is only specific to replicator.

7

I have already worked on it, it improves the results a lot but the computational time increases dramatically, also it does not solve the problem completely.
Thanks @Richard3D, I will try your solutions!

8

Yes, there is always a speed / quality trade off.

9

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