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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How to optimize hair rendering?

I'm rendering a character animation with particle hair in Cycles, but no matter how I increase sampling, the hair is still not clear as the rest part of body. I've tried to render with 100\1024\2048\...
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Huge amount of noise is generated by overlapping several glass objects and de-noiser misbehave in Cycles - Blender 3.3

I am working an animation with simple particle emitter, the object has a complex glass shader to bring refraction and a bit of rgb separation. The problem is that when the particles overlap, which is ...
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Denoise makes Image pixalated in Cycles

Hi I wanted to render an image in Cycles and I enabled denoising to remove the noise from the image. But now my image is always pixelated/blurred. Does anyone know what this could be or what settings ...
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How do I keep the noise in my Cycles render (animation)

Blender automatically reduces noise on Cycles renders now, but I don't want that. Googling this comes up only with ways to reduce noise, but I want to keep the noise you get in cycles.
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I keep getting shapes outlined on the model when rendering in cycles when using specific nodes from the shader editor

Usually whenever I render in cycles, either when using the glossy node, the glass node, or the translucent node in the shader editor, I have shapes within the model showing up. How to fix? Is this ...
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Blender 2.9+ Cycles missing denoising

I Tried to follow tutorials for improving rendering, because i couldn't find the denoise option. Turns out im just completely missing it, and i have nothing of the likes in my sampling. I opened my ...
2 votes
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How to stop flickering in dark animation?

Hi – I’m having problems with flickering in my scene when I render the animation (there's two renders in the video I linked to, the first with no BG light and the second with plenty). I’m going for a ...
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Street looks muddy / possible Denoising or Light Bounces problem

I'm having some trouble with my render, the street looks kinda muddy and blurred.I tried using different Denoiser but they mostly made it even worse. The sample amount should also work fine, this one ...
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33 views

Subsurface light flickering with a cycles rendering engine

I got a problem with lanterns in my rendering scene, and I noticed flickering in the lights in my video. I can't try to render with more samples since 25 samples already took me 5 hours. The ...
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How to denoise when baking into vertex color (color attributes)

I've been searching for quite a while for a solution for this but haven't been able to find anything. As part of custom level making for the PC port of jak and daxter, the vertex colors are used as ...
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Why is it taking more time to render an animation than it was taking me when I was testing a single image

When I was rendering image at 0.03 noise threshold , it took 47 to 53 seconds and sample count reach 1008. Now it is taking around 1.5 minutes and reaching 30 - 50. Denoiser is taking half a minute. ...
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Denoising created weird glowing artifacts on character

Whenever I try to render an image with my girl character, a weird glare is created at the end, when it denoises. Any idea why? Thanks
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Denoising results in flickering on fur regardless of high sample count

Every time I render this test animation, the denoising is resulting in different patterns of smoothing for each frame, making the flicker. Everyone online suggests upping the sample count, so I used ...
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Archviz animation - skip every frame and use FlowFrames or temporal data denoising?

I’ve been having trouble with the best method to render an interior archviz animation scene in Blender, using Cycles. In my opinion, there are two methods: 1 - Render every other frame (resulting in ...
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Denoiser not applying to specific patches on render

When rendering an image in cycles on Blender 3.1+, I get an issue where certain patches of pixels still have noise. I have tried to change my noise threshold, that didn't work. Tried increasing the ...
1 vote
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Why is my render blotchy and how do I get rid of it?

So I have this scene I'm trying to render and I noticed no matter how many samples I use, I can't get rid of the blotches on it. I used 1200 samples in this render. I'm using cycles. This took 4-ish ...
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How to denoise Exr and it's passes

How to denoise Exr and it's passes in Cycles ? I tried settings Denoising data and it didn't work.
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1 answer
105 views

Can I Denoise pre-rendered footage?

I have a reasonably lengthy sequence of PNG's which I rendered while I was away from my machine. To my chagrin, I returned to find that I neglected to enable denoising data at render-time! I am left ...
1 vote
1 answer
302 views

Losing quality on image texture with denoiser

I'm making a backrooms animation and I've stumbled onto a problem, the denoise node is creating washed out patches on the carpet texture I'm using which really removes the immersion I know a simple ...
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469 views

Denoising depth purpose?

What is the point of the "Denoising Depth" pass when using the denoise node in the compositor? When you select "Denoising Data" from the Blender view layer properties, it gives 3 ...
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30 views

Optix vs open image denoise [duplicate]

I heard that optix now has a temporal element, does this make it better for animations than open image denoise?
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1 answer
200 views

Straight Dark lines on object and the render

Straight Dark lines appeared after I choose Cycles as render engine and turn on denoising with Optix. Even I turned off denoising this is happening. Even in the render, those lines appear. (Below is ...
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1 answer
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A good GPU based de-noiser for AMD?

Is there any decent de-noiser for AMD GPU's on macOS via Metal? I've been using my new AMD eGPU for Cycles X since support was released a few weeks ago, but one of the problems were that the ...
1 vote
1 answer
244 views

How to denoise already rendered Open EXR Multilayer image sequence?

I rendered my scene with open EXR multilayer with the following passes: -Data: Combined Denoise Data (Do I have to tick this?) -Light: Diffuse (Direct, Indirect, Color) Glossy (Direct, Indirect, Color)...
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Denoise for animations on laptop with CPU only in Blender 3?

I'm trying to make some simple animations of stuff imported from Minecraft. I have an MB Pro from 2019, so no GPU that will be of any use. Denoise for images works super well, even with images ...
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Why Render looks smudgy in cycle engine [duplicate]

I'm having a rendering problem here in blender. The render looks smudgy and this never happened before. Usually, I use a very standard amount of samples around 128-256. I use the blender 3.0 version ...
2 votes
1 answer
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Wavy Artifact in Viewport Rendered Mode

My rendered preview has these really weird artifacts. I found them inside of the actual render too. I don't remember changing any settings that could have made it this way. I tried turning denoising ...
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Viewport Denoising Doesn't Load

So I'm currently trying to enable viewport denoising automatic using Cycles in Blender 2.93, but whenever I do the viewport turns grey and it doesn't load (it stays stuck on "loading render ...
2 votes
2 answers
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How to reduce noises of light reflection on the static object in video?

I am not sure what is this problem called. There are many noises of light reflection on the ground. They are different between frames. How do I reduce it? Or how to make it more realistic? Can texture ...
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Blender Denoise doesnt work [duplicate]

In the Denoise tab in the Render properties there is nothing to select, but I want to use the Denoiser. If I try to render an image with denoise on the result is a black Image. Blender Version 3.0 My ...
1 vote
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808 views

Blender 3.0 Denoiser disappeared

I installed a new Blender 3.0, but there is no tool in the setting Denoiser. I have reinstalled several times new Blender 3.0 without changes. In Blender 2.9.3 and and earlier versions Denoiser works ...
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Is using the denoise compositing node to denoise FFmpeg video possible?

If so how? If it's not possible to do it with FFmpeg are there any other video formats that are compatible with the denoise compositing node?
2 votes
1 answer
337 views

Do I have to activate "denoising" when using the denoise node in the compositor?

So here's a regular denoise node setup. I just learned this recently. But normally, I wouldn't denoise in the compositor. I would just denoise using Optix by ticking this. Based on my understanding, ...
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Why does OptiX Denoising work in Viewport but not Render when rending a specific (large) scene?

I cannot get OptiX Denoising to work on the final render for my complex scene. However, if I create a new scene and render the default cube (using low samples as a check), OptiX denoising works for ...
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Render pass with denoise node not saved when rendering thru command line

I'm a noob Blender user but a long time 3DS Max user. I have set up render passes to be saved as separate EXR file. All passes render out and saved in the correct place when test rendering within ...
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416 views

(De)noise artifacts in animation

I have a simple scene with focal point animation, and when I render it there is some crazy movement in the highlights, that I'm pretty sure is due to the denoising, i.e. that the noise pattern changes ...
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1 vote
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Despeckle not working properly

When i am using despeckle in the compositing tab to clean up a depth pass it just slightly reduces the noise. In the video I am watching one despeckle already works better than 6 for me. first picture ...
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Weird distorsions in light when using denoise node [duplicate]

When using the denoising node I happen to have some distortions where the light bounces. When I increase the samples to 600 it's reduced but it still be noticeable. What may be causing this effect?
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1 vote
1 answer
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I cant find denoising but I have blender 2.90.1

So I made a roblox gfx and it has denoising, but I made a new one, and it doesnt. I have no idea why- and the difference is very clear. You can also see that the second one is kinda transparent. And ...
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Blender Cycles Render Speed Optimization for animations

i have a couple of questions about speed optimization for Cycles Render Animations. Many of the posts that I have seen refer to older versions of Blender and are sometimes a bit contradictory. I´m ...
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Blender denosing animation render

I have rendered an animation in cycles (I accidentally rendered it as mkv instead of an mp4) and I checked denoise before rendering and now that it is rendered it is very very blurry. I tried to fix ...
1 vote
1 answer
346 views

Blender 2.93 Denoising Strength settings

In the Blender Documentation there seems to be several settings for tweaking the denoising (see image) However, inside Blender, the only options are choosing which denoiser, and the amount of samples ...
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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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2 answers
143 views

How to denoise night scenes in blender?

Pls help, I've been struggling to reduce noise in this scene and noise ruins all well-done textures and emission materials. Funnel lights are points along with sphere emitters to imitate lamps. Even ...
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282 views

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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Stains on white walls_interior render_denoiser [duplicate]

I am trying to render an interior image but I have problems with the white walls. As shown in the image attached there are "stains" caused I think by the DENOISER. (I guess so because of a ...
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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 ...
1 vote
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225 views

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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1 answer
3k views

Blender denoise node not working

This feature has not been working in my laptop since it came out. Basically what happens is when I add the denoiser to the render layer in compositor ,it hangs my laptop for roughly the same amount of ...
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1 answer
550 views

My final render with cycles look blurry after denoise [duplicate]

I am new to blender and try to make a room everything look good until I use final render to get a high quality picture the light look wrong I try to use 1 light bounce and it didnt help at all pls ...
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