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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47 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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1answer
86 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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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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37 views

Why did my Denoising disappeared?

Hello guys I need a little help, the Denoiser below Adaptive Sampling suddenly disappeared. How can I enable it back?
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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 ...
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202 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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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-...
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1answer
276 views

128 samples with node denoiser animation still flickering

I'm trying to do an animation but even if I doubled the samples my video is flickering, in another topic they suggest me to increase the samples, so I moved from 64 to 128 samples but the result is ...
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1answer
15 views

Having trouble rendering fire+smoke with transparency

I'm trying to add fire+smoke to a video by rendering out the simulation as a PNG sequence with transparency. It looks fine in the render window and in the compositor but when I drag in the final PNG ...
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25 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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2answers
97 views

Render shadows without denoise on a transparent background in cycles [duplicate]

I have a problem with the graininess that appears in the shade. I want to render an object with a nice and clean shadow. The result is a png with a transparent background. Render in Cycles engine. I ...
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2answers
246 views

Can't find the denoiser in view layer

I am using Cycles and yet it doesn't appear. It doesn't work even when I'm using the denoiser node. please any advice would be welcomed.
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Denoised render's shadows too distorted without Indirect light clamping - too opaque with Indirect clamping. How do these interact? [duplicate]

You can read in my previous thread about my struggle with this part. I made a milestone just now, increasing Indirect clamp will remove the fireflies, however the shadows are now too opaque. Render ...
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1answer
53 views

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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2answers
158 views

Explosions and fireflies / dots in Blender 2.8 (already followed all tutorial without results)

Good morning everyone, I'm literally ready to pay who will be able to solve my problem. here is the original file of the explosion. https://drive.google.com/file/d/1UBb2ctIG_OQ5qh7bpMSTUFcNI_E1LTCq/...
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3answers
8k views

Noise on glass in cycles

I cannot get rid of noise/fireflies in my glass shattering scene, rendering with cycles. I've tried all of the following suggestions: Increasing Samples (up to 4000, still tons of noise) Filter ...
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57 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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61 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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1answer
45 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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2answers
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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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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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 ...
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1answer
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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 ...
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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 ...
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2answers
5k views

denoise node not available under compositing in blender 2.8

I was following blender gurus new donut tutorial. after modelling the donut, i rendered it once, went into compositing to add a denoiser node to the rendered image. but if i search it, its not ...
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151 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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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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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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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?
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1answer
63 views

Exporting a Denoised Composited Image Sequence

I just finished Blender Guru's donut tutorial, all parts and levels. However I must have misunderstood how the composite node works, especially in regards to animation (or rather image sequences). So ...
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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 ...
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605 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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14 views

Denoise a bunch of images with correct output names [duplicate]

I have a Blender project set to denoise images rendered in Source Filmmaker. It actually does de-noise the images correctly, but the problem is that the setup and output is confusing. Regarding the ...
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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 ...
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81 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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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-...
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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 ...
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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 ...
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1answer
97 views

weird yellow and red grains on my renders [duplicate]

I am working on a scene in blender related to Minecraft but for some reason my render image have small yellow and red spots sprinkled which are barely noticeable , is their a way to fix it. it might ...
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1answer
192 views

How to enable Intel denoiser using python?

I'm creating a scene from scratch in blender (2.83+) using python, and I'd like to turn on Intel denoiser for the Cycles render output. I've got some code but it's not working yet: ...
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1answer
322 views

Advanced OptiX denoiser settings missing in 2.91

Where are the advanced OptiX denoiser settings like radius, strength, feature strength, etc. in 2.91? They were in the view layer settings in 2.83, but I can't find them any more.
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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 ...
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1answer
25 views

How to save a denoised image in composting

How do I save my denoised render in Blender's Composting tab? Here's how I arrived at my problem... Rendered an Image Opened Composting Added Denoise Node Node worked perfectly Attempted to save the ...
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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 ...
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0answers
20 views

Weird and unwanted noise from lighting in interior setup [duplicate]

I am following the blender guru 15 minute kitchen tutorial, and I have been doing good so far, but I noticed when I did a test render, that my scene was VERY noisy, as most interiors usually are at ...
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1answer
67 views

The shadow looks like a wave. How do I fix it?

I can't solve it in 3 hours...
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1answer
169 views

Can you use Open Image Denoise on the gpu in blender 2.91 or will it only work on the cpu?

Can you use Open Image Denoise on the gpu in blender 2.91 or will it only work on the cpu? And if you can do it on the gpu, how?
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2answers
298 views

Blender is rendering my short animation too slow!

I have a small problem that I just encountered. My Cycles render is too slow, even though I just need to render 120 frames total! It takes literally 4 hours to render 1 frame, and now on my third ...
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398 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 ...