Questions tagged [denoise]

Denoising is the processes of getting clear signal (image) out of a noisy one usually by smoothing out the signal around a local neighborhood (a couple of pixels around the target pixel).

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Which Denoiser to turn on?

Which denoiser should I use? Does it matter? 1. View Layer Properties Denoiser OR 2. the Intel Open Image Denoise --> which I know is quite powerful. So why use the denoiser under View Layer ...
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Excess noise in cycles render and odd denoising results

I'm trying to do some renders of a dark room, but there's quite a bit of noise despite me setting it to 128 samples. When the denoiser kicks in, it fixes the noise but makes the scene look completely ...
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2.93 cycles denoising viewport render problem with it just going black

I have updated to the new blender 2.93 and have started 3D modelling within it I am unable to do a have the viewport rendering while I work in cycles because of how pixelated it is and the denoiser ...
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Donut glass cup render has too many grains and speckles + denoiser come out distorted, shadow is also too opaque. What settings may I try out?

I feel I am nearing completion of the tutorial but am still having gaps in knowledge on how to render light properly. 2.92.0 blender file: https://pasteall.org/blend/6474d6f8bd5f4b1abbabaa41478e7e6a ...
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1answer
56 views

Composite cryptomatte video

I’m working on a small animation/film, I will render the frames out as PNG then sequence them together. How do I use the cryptomatte/render passes feature on this animation because when I add an ...
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190 views

Speed up Intel denoise

Currently I'm rendering on cpu, because at the time of writing it's faster for me (tested it a few times). I know this is kind of bad and I should get a better gpu, but well, currently it's not ...
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650 views

Can anyone help me understand what causes this error ? OPTIX_ERROR_INVALID_VALUE in optixAccelComputeMemoryUsage

I m trying to do a rendering with optix on. I just recently upgraded from 2060 to a 3090. I had the exact same error with the 2060 but i thought it was because of vram limiation as the scene that i ...
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13 views

View Layer setting do not show up in certain files

*I have no View Layer settings. But in other files I have all these settings. This is in the Cycles Render engine. In the render setting I can't choose my Gpu or Cpu but if I switch to a different ...
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34 views

How to Use Denoising in Texture Baking?

i want to use the built in Denoising with baking textures, is there any way to do that ?
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64 views

Anisotropic Shader and Denoising

So, I have a scene where I had 8-16 samples set and Denoising checked, which worked great for smooth metals in the scene. Now I added one piece of anisotropic metal and was confused why the anisotropy ...
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96 views

Denoise node and File Output not working

I am rendering out several layers at a high resolution, running them through the Denoise Node, and then outputting them with the File Output node. I have some passes that are getting denoised, and ...
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33 views

Denoising with AIDenoiser makes some colors black

I'm using Blender 2.83.3 I've set up a denoiser node setup in the compositor. When I lead the noisy image into the denoiser most of my colors turn black. If I use the original image this doesn't ...
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119 views

Composite with render farm

I am looking to render my project on sheep it render farm and then use the ai Denoise node, to clear up noise. I am not sure if it is possible to use the denoiser node in the compositor because sheep ...
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74 views

Saving animated render from compositor (with denoise)

So basically I'd like to denoise an animation I did, and I know the settings to achieve denoise on the compositor, but it only really shows me one frame of it. When I try to save the render result, it ...
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26 views

Denoising in Blender Internal? (2.79)

Is there a way to apply denoising in the Internal render with Ambient Occlusion active?
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244 views

Denoiser node does not work in Blender 2.82

In Blender 2.82, Intel Open Image Denoise does not seem to work as when I try to denoise an image using the denoiser node, the resulting image is completely black. I recall the denoiser node working ...
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729 views

Blender 2.83 Optix Viewport Denoising Not Enabled for Multi GPU systems?

I'm using a multi GPU win 64 system and I was hoping to try out the new Optix viewport denoiser in the latest daily build of Blender 2.83. In the preferences menu, Blender recognizes my CUDA ...
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Light calculation issue

So I have tried so many things to get this blender denoiser to work properly on this image but I can't seem to figure it out. I am almost finished with this image but no matter how much I increase the ...
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927 views

Blender 2.8 beta Denoise bug?

I have this problem when I am rendering in Cycles, the render takes the time to process the denoise tiles, however, I have unchecked the denoising filter in view layer tab. I also turned off any ...
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3k views

Best settings for denoising in Cycles

I am working on a project and I am using the Cycles render engine. Denoising usually seems like a good option but the image does become a little blurry when I use denoising with the default settings. ...
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695 views

Is there any technical reason why the denoiser isn't a compositing node?

I enjoy having the option to denoise renders in Blender 2.79. However, it seems like it would be much more intuitive if there was a denoising node in the compositor for a number of reasons. For ...
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375 views

Smeared dots with Denoise 2.79

I'm new to this world. I was rendering a test scene, to see differences of using the Denoise feature. Anyone know why the Denoise version (bottom image) has these weird smeared dots in them?
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412 views

Artifacts using denoise

I did this tutorial, and when I render there is an artifact like in the image below. I'm using the last macOS with an AMD 560, and if I don't include denoising everything is fine. Can someone tell me ...
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1k views

Denoising not working with GPU

I have this problem, when I try to enable denoising when rendering with my GPU only I get a completely black rendering. When I render with CPU+GPU I get black tiles. I´m running Blender on an iMac ...
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Noise in the animation render

So I did a render for a small animation that I need to put on a website ( needs to be small in size to load fast ). I used 500 samples in cycles with Denoise in this render but it seems to get some ...
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Why my render gets overexposed and blurred after the actual calculation?

While rendering everything is fine, but when 100% rendered the objects become blurry and there is some kind of intense light added to the image: While rendering everything is fine (image while ...
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Multiple Importance has problem with glass

I have problem with Multiple Importance for Point Light and glass material. Look on the pictures. First picture depict active multiple importance on the all point lights and second deactive multiple ...
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37 views

OptiX Denoising is making the text in my Render come out blurry. How can I turn down the strength of the denoiser?

I have seen this question asked a few times; denoising seems to always blur out finer details in a render, which would be fine, except it blurs out text that I am projecting onto a wall in my scene. I ...
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28 views

Blender renders are blotchy/noisy no matter what

Blender experts! I've been doing an interior design render recently, and can't get rid of the blotchiness in my renders. It looks like this (just part of the render): The setting of the scene is as ...
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82 views

Settings or manual for temporal denoiser

I am looking for a manual or documentation or a way to change settings for the temporal denoiser for animation as described in this question: How to denoise animations using Blender's Temporal ...
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83 views

How to properly denoise an animation [local and renderfarm]

I have a project for my college assingment that has to be ready at end of march. I am still "new" to blender but I try my best in every way, so: I have a scene with 400 frames that uses ...
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14 views

Is there anyway to reduce an image size without getting noise?

i was triying to reduce an image size right in compositor, using a scale node, but when i render it the image get a lot of noise. i tried reducing to the same size in other software and it works ...
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75 views

Why is my Final Render Losing Texture Detail when working with Cycles and Optix Denoiser?

The first picture is my material viewport The second picture is the final render using Cycles and Optix Denoiser (No COmpositor) with 1200 samples and 6.00 Light Clamp Is there any way that I can use ...
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109 views

If I use denoise and render it crashes, with no denoising it renders fine

I use blender 2.79 on windows 10 and every time I press denoise it always crashes while its rendering. But when I don't press denoise it renders fine and it doesn't crash.
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458 views

Denoise in EEVEE: Blender 2.91

I have recently started using EEVEE to render my images. However, it is very noisy. I have not seen an option for denoising, and have tried to use the denoise node in the Compositing tab. Here is my ...
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252 views

OpenImageDenoise not with all cores?

OpenImageDenoise needs a lot of time on Cycles rendering, and while the GPU renders blistering fast 14 of my 16 Threadripper cores are not denoising. Is there somewhere a parameter to tweak to get all ...
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46 views

The denoiser doesn't work on my render

I tried to do a render but i noticed the denoiser isn't applied. Well at least to the donut. I'm not sure if it worked on my icing. I tried to un-check the denoiser and re-check it but it didn't work....
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34 views

Why doesn't Nvidia optix denoiser appear in denoise drop list?

I am relatively new to blender and i read that Optix denoiser is available on 2.9 version as a choice for non RTX graphic cards. but when i downloaded it i couldn't find that option.
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134 views

Viewport Not Rendering/No Lights/No Materials

I just did a render 2 min ago. I'm on blender 2.9 and I was playing around with the denoise features. At the time, the lighting was working, and the materials on my object were perfectly fine. I was ...
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242 views

Denoising removes roughness details?

I am rendering a snow scene and for the roughness i have a voronoi texture to create a glittery look. However, when I render it, they disappear.. I think maybe the denoiser thinks they are fireflies? ...
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237 views

White block artifacts using cycles and optix

Blender 2.83LTS When rendering an image (~7000x5000px) using the CPU (scene doesn't fit in GPU memory) + OptiX Denoiser the Image will have white, blocky artifacts after the denoising process of ...
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64 views

Crashing when Denoising (2.79)

Hi i am a gfx creator :) when I am trying to denoise as soon as my tile goes transparent it just closes on me! and it happens everytime. when i dont denoise it doesnt close then it ends up noisy and ...
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I can't get openimage denoise to work on linux

I saw this questions asked already, but the way they explained the solution made no sense. I only got linux two days ago, can someone please tell me step by step how to get it working.
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29 views

How do i remove these splotches from my rendered image?

I am a beginner that just did the doughnut tutorial
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42 views

Strange Cycles noise pattern not based on samples or denoiser - bug?

This happens in multiple of my files / completely different renders. V2.83.2, Cycles renderer. There's a noise to any dark area that isn't sample dependent (looks exactly to-the-pixel same at 500 or ...
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959 views

Denoise not working in Blender Octane

I'm using Blender Octane, but somehow the denoise doesn't work in render I have it enabled, also connect the denoise beauty socket, but nothing worked, I need help...
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220 views

Is it possible to enable real-time denoising on non-RTX card?

I downloaded blender 2.83 and one of it's new features is realtime Optix viewport denoising. I don't have such option anywhere because I have non-RTX card (GTX 970). Is it possible to edit some lines ...
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26 views

De-noise pre-rendered image starting from frame 0

So, I have some pre-rendered 3840x2160 images from another program called Source Filmmaker, and I want to de-noise them using Blender. SFM exports images starting with frame number 000000, regardless ...
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170 views

My glass has a smudge

I made a cup with a glass by setting transmission to 1 and roughness to 0. So I somewhat made it like above. However, As you can see if you zoom in it. there are several points to improve such as ...
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50 views

Noisy Animation

I'm new to Blender. I just animated a waterwheel but the water seems very noisy and grainy. Can anyone help me to sort this out ? I rendered this with Cycle's rendering engine. I don't have a GPU in ...