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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82
votes
9answers
112k views

How to avoid noisy renders in Cycles?

I know that this question is a bit old or maybe overdone, but I'm running the latest edition of Blender and when I use the Cycles engine I get really fuzzy results and I can't find a simple, non-...
20
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3answers
27k views

How to properly denoise renderings?

Since the Denoise feature was added to Blender I only use the default setting with it and it really does the work. But sometimes the denoise is noticable on some of my renders. How can I overcome the ...
14
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2answers
7k views

Denoising option grayed out

I would like to use new denoising feature for cycles in blender. I downloaded latest build for blender (blender-2.78-81d7ff8-win64). When I open my project the ...
14
votes
1answer
1k views

What are the denoising passes useful for in 2.79 experimental feature set?

In 2.79 when experimental feature set is activated, there are some new passes available to the compositor if Denoising is enabled. The new passes that are there after rendering the denoising pass ...
12
votes
1answer
2k views

How to utilize the denoise passes to build a denoise node network in the compositor

I've built custom denoising node networks before in houdini's compositor, using raw passes combined with noise reduction nodes, but I'm not sure how to utilize the various blender denoiser passes to ...
7
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2answers
2k views

How to denoise animations using Blender's Temporal Denoiser?

I've been diving into the secret Blender Animation Denoiser function mentioned in February of 2019 by Pablo and documented on the Developer Site. Here are some things I figured out after digging ...
7
votes
2answers
367 views

Why are there so many denoising passes?

I just wanted to ask how should I use the other denoising passes (except for the normal and albedo ones):variance, shadowing, denoising depth and intensity, because nobody talks about them and I don't ...
6
votes
1answer
1k views

Type of Denoiser built into Blender

As far as I know, Blender seems to have three denoisers. The default denoising feature in the view layer tab The denoising feature displayed in the view layer tab when optix is enabled The denoise ...
6
votes
1answer
7k views

Which denoiser is better?

In blender 2.81a, there are two denoising tools: Under layer properties, you can scroll down and enable denoising Also in layer properties, you can check "denoising data" under passes > data and in ...
6
votes
1answer
17k views

How do I use the cycles Denoiser?

For quite a while, I have been using realtime GLSL shading for most of my projects. I decided to re-vist cycles after hearing about how awesome the new denoiser is. What does the denoiser actually do, ...
6
votes
1answer
5k views

How to properly connect the Denoise node in Compositor?

After enabling Denoising Data pass, there are now two image outputs: Image Noisy Image Which should I use with the Denoise node? Blender Manual doesn't cover it.
6
votes
1answer
2k views

Optimal noise threshold for Adaptive Sampling with AI Denoiser

The feature "Adaptive Sampling" allows the Cycles renderer to automatically calculate the samples need per pixel by analyzing the noise level. Next to the option to enable it, there is a ...
6
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2answers
3k views

Shadow-catcher stays noisy even with Denoising - also very dark

I am facing some issues with the shadow-catcher and denoiser in Blender 2.79. Denoising doesn't seem to have any effect on shadow catcher shadow. If I turn off shadow catcher on ground plane the ...
5
votes
1answer
151 views

Cycles wont do the amount of samples I put in at min samples

I don't know what I changed but I've been trying to change my settings to get less noise and a faster render, but now it wont do the amount of samples I want it to. 1 sample takes as long as 1000 ...
5
votes
1answer
1k views

How to have Denoiser ignore certain objects?

I have a scene with some objects that have image textures. Denoising the entire scene makes the image textures on certain objects to look less sharp. How do I get Blender to denoise an entire scene ...
5
votes
2answers
1k views

denoise a rendered image

Is it possible to use the denoiser of blender on an already rendered image, considering it will be rendered using blender ? (the reason being I'd like to use the resumable render via blender's command-...
4
votes
1answer
7k views

Where is the denoise option in 2.90?

I was using the denoise option in Blender 2.8, but cant seem to find it in 2.90. The documentation refers to the "Render Layers" but it doesn't seem to be there either. When I open an older ...
4
votes
1answer
305 views

How does a denoiser work?

Recently I tried blender+cycles with denoiser turned on, and it's just awesome. I can use much fewer samples to get a better image. I became curious how does a denoiser work internally. I guess it's ...
4
votes
0answers
79 views

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 ...
3
votes
2answers
2k views

Why does Denoising take up so much memory?

I tried to render my scene with the new 2.79 Denoiser. During the Rendering Process everything was fine, my memory peak was about 1000M but as soon as the Denoising started it suddenly shot up to ~...
3
votes
2answers
2k views

AI denoiser removing detail

I've created a simple procedural wood texture for a ceiling fan I'm modeling. Unfortunately the usually excellent AI denoiser from 2.81 is smoothing out most of the texture details. Any suggestions ...
3
votes
1answer
17 views

Why isn't the Image Editor showing the denoising image like in the Compositor?

I am fiddling with denoising a set of images but the image in the Image Editor is not denoised as in the Composition Tab. Is there something that I am missing to do? I have already tried detaching and ...
3
votes
1answer
73 views

Can't find Denoiser in 2.81a

My Splash screen and system-info.txt both confirm I have version 2.81 of Blender. And yet, when I go to View Layer Properties and Passes I cannot find the sector Data underneath and therefore I also ...
3
votes
1answer
332 views

Combining denoise node with other nodes in compositor?

I'm rendering a thing in cycles and I think I put the Intel denoise node in the wrong spot, because it won't mix with the rest of my nodes in the composite. I've been using Blender for a couple of ...
3
votes
1answer
494 views

Where is the denoiser?

Can someone tell me where this denoiser is? I know it's in the renderlayetab, but i can't find it i can only find view Thanks
3
votes
1answer
2k views

Problems with denoising in rendering

I'm starting to take my first steps in Blender. I recently did the BlenderGuru's light bulbs tutorial. I have problems with rendering. The two images attached were rendered using Cycles (Blender 2.79),...
3
votes
1answer
192 views

How do I denoise an image sequence that has already been rendered?

I have completed Andrew's donut tutorial and I have a full set of 30 frames that makes up the image sequence. I opened another Blender tab (closing down the tutorial with saving) to compile the frames ...
3
votes
1answer
534 views

Weird blotchy shadows in blender cycles (denoising)

I have an interior scene with a window opening, a portal light in the window and an area light acting as sun light. I want to achieve this dramatic cinematic feeling without interior spot lights apart ...
3
votes
1answer
816 views

Is there a way to make denoising work in the Cycles viewport?

I saw this in other renderers, such as the Radeon ProRender or V-Ray and was wondering if there's an Add-on or Build for Blender to work around the limitations of Cycles' Denoiser.
3
votes
0answers
442 views

Why is my render result disappearing after denoising? [closed]

I wanted to denoise my image in compositing. I don't know why it is disappearing after connecting with denoiser. Edit: I solved deactivating Progressive Refine from Render Properties > Performance > ...
3
votes
1answer
1k views

Partially high noise using glass material [duplicate]

I created a simple bottle and applied a glass material using the new principled shader. When it comes to rendering the surface of the bottle turns out incredibly noisy, except the part on the front ...
2
votes
1answer
768 views

“Denoising” checkbox missing in Blender 2.9 [duplicate]

In Blender 2.8+, I used to check the "Denoising" checkbox in the View Layer Properties when using Cycles rendering engine but after installing Blender 2.9, I can't find this item anymore: ...
2
votes
2answers
200 views

Can't Get New Intel Denoiser to Work on Projects

I've been following along on all the tutorials I can find to make this happen, but my denoiser node doesn't seem to have any effect whatsoever when I apply it. Where am I going wrong? Thanks in ...
2
votes
1answer
452 views

how can we remove the blurry effect that has been caused by denoising?

(using blender2.82) hey guys i have been trying to add fog to my scene but when i do it i have a lot of noise in the image i tried to use blender default denoise but it made it worst because it added ...
2
votes
1answer
5k views

Denoising options in latest 2.91 nightly builds

I've been using the Denoise node in the compositor, hooked up to Denoising Normal/Albedo, with those render denoising passes turned on. Works fine. I believe that's the OpenImage denoise algorithm. In ...
2
votes
1answer
2k views

Denoising Animations in Cycles

I've made a simple animation in blender 2.81a and am now trying to render it. My system specs: CPU i7-6500U; GPU Nvidia Geforce GTX 950M; RAM 16gb DDR4 So far, I've done two test renders (both in ...
2
votes
1answer
161 views

How to exclude passes from EXR file when using the denoiser node?

Situation: Blender: 2.81a, Cycles 1 Scene, 1 View layer View layer passes: Combined, Normal, Diffuse Color, Emission Using the Normal and Diffuse Color as inputs to the denoiser. Denoiser outputs ...
2
votes
1answer
823 views

How to enable denoising for my final render?

I have been fiddling around with the LuxCoreRender rendering settings, but both denoisers do not seem to be having effect on my frames that I have rendered. I have re-installed LuxCoreRender ...
2
votes
1answer
879 views

How do I get denoising to work for all OpenEXR passes?

With the new Denoiser function, we're finally able to drastically reduce the samples in our scene without having to worry about the noise to much. I'm rendering my scene with less samples now (500 ...
2
votes
1answer
97 views

How to render alpha channel and depth map quickly without having to re-render the whole animation?

So I've finally managed to complete my first animation, it's an animated version of a scene build I created and I decided to outsource it to a render farm for completion. Now that I've got it, I've ...
2
votes
1answer
50 views

How can I inprove my render image quality, even used denoiser too

I have used denoiser, resoluton 1080x1080 px, render300, but still image looks blury when I zoomed it in.
2
votes
1answer
469 views

Blender Denoise and Glare nodes

I want to add a glare node to my render result but when I do that I can't use the denoise node, I tried to combine them with mix node but then it's only allowing to 50% of each node to take effect on ...
2
votes
1answer
372 views

How to use bpy.context.scene.use_denoising in Blender 2.8?

This give an error: AttributeError: 'Scene' object has no attribute 'use_denoising' I know that in the previous version like Blender 2.79 the command to access <...
2
votes
1answer
559 views

Denoising Not Showing In Blender Cycles

Ive gotten blend 2.79b and I heard about the denoising feature. I went into the render layers tab but it's no were to be found. I'm in cycles render.
2
votes
1answer
4k views

What is the difference between NLM vs Open image denoise? [duplicate]

What is the difference between NLM vs Open image denoise? also what is the "denoising data" in view layer properties?
2
votes
1answer
455 views

I installed blender on linux, and by default OpenImageDenoise is not enabled, how to enable it?

Like the title states, i have installed blender on linux and everything works fine, except for the OpenImageDenoise, i am sure that my computer does support that feature as when i use blender on ...
2
votes
1answer
398 views

How to install Intel Open Image Denoiser node on Blender 2.79

I'm using Blender 2.79 and Cycles Render. And I'm rendering on 2.81 on Cycles Render with Intel denoiser, but 2.81 crashes. Please help me to use this denoiser on 2.79. Help me to install Intel ...
2
votes
1answer
379 views

Problem with fireflies and denoise on surfaces

Lately I have this problem with my renders when after rendering I get weird light effects (fiereflies) especially on walls that are just plain coloured. Like in this render ( It's closed room with 5 ...
2
votes
1answer
359 views

Why do I have 'glitched' areas in my render after enabling denoising? [duplicate]

I am a newbie to blender and i found a 'Denoiser' option and decided to use it. I found out its function but it seems to create these 'glitched' areas in one of my renders. What are they and how do i ...
2
votes
0answers
38 views

Trying to work with light and glass [duplicate]

I'm new to Blender. I've been working on a scene with a lighthouse, and I'm all done with the geometry. I tried an eevee render of the scene, but uh-oh! When the glass preset is applied to the window ...