Loading...
> >

Grainy image problem

mightguy15mightguy15 Posts: 56
edited July 2020 in Technical Help (nuts n bolts)

So ya boi was trying to render the following image. Let me explain.

 

 

I'm working on a comic called Bazooka girl (which you all should definately not decline to check out here if you are interested in not hurting my feelingshttps://comicfury.com/comicprofile.php?url=bazookagirl) And the story so far is that a super intelligent technomancer, mechanical engeneer, and gunsmith breaks out of a lab that was experimenting on her and raises some hell (she is actually a clone, but enough about the debatably awsome and original story).

 

The issue here is a can't get the grain out of this image for the life of me. I have tried everything from tampering with the render settings, adjusting the light sources, working with spotlights, and even trying to edit out the grain using GIMP (which worked a bit, but it also made the noise super crisp too). Do you guys have any suggestions....like all of them perhaps? I don't think the issue is my machine, I have what I feel is a servicable 8gb of RAM and 1tb or memory with an additional 1tb of memory thanks to an external hard drive. These are the only models in the scene, and I was told 4gb would have been enough to render this. Is the issue that I don't have enough memory are am I simply not tinkering with the settings as effectively as I could be? Thanks in advance for any helpful information you guys can provide and be safe!

Post edited by mightguy15 on

Comments

  • Richard HaseltineRichard Haseltine Posts: 100,772

    Image isn't showing properly, but it looks like it's an enclosed space - how are you lighting it? If you are relying on an HDRI bouncing in through limited openings then it will be slow to converge.

  • mightguy15mightguy15 Posts: 56
    edited July 2020
    Richard Haseltine said:

    Image isn't showing properly, but it looks like it's an enclosed space - how are you lighting it? If you are relying on an HDRI bouncing in through limited openings then it will be slow to converge.

    Hmmm, let me try something else real quick. This site doesn't seem to work together with comicfury very effectively, imma try another link.

    I've pretty much tried everything. I tried with spotlights, but it only causes it to be brighter with the same amount of noise. I'll try to render a version with spotlights and show. I've also tried distant lighting. With this image though I didn't include lights and Daz did the thing where it automatically lights the image. 

     

    It is an enclosed space, I used this https://www.daz3d.com/sci-fi-lab

    Hmmm, are you suggesting that this issue is that I may not be properly lighting it? I will admit my knowledge of lighting is fairly limited, as the only real sources I have been using for light were spotlights and distant lights. I'm sorry, lol, I suck at this stuff.

     

     

    Post edited by Chohole on
  • GordigGordig Posts: 10,049

    Where are the bazookas?

  • Richard HaseltineRichard Haseltine Posts: 100,772

    I don't know about "properly", but areas that rely on bounced light (rather than light directly shining on them) take longer to converge (lose the noise). "Ghost lights", a plane with the Emissive preset applied and their Cutout Opacity set to nerarly but not quite zero, can be used to fill such areas in - and then you can use the Tone Mapping group in Render Settings, or an image editor, to get the look you want.

  • mightguy15mightguy15 Posts: 56
    Gordig said:

    Where are the bazookas?

    Asking the important questions I see, LOL.

     

    They are coming, she just needs to find them after she breaks out of the lab.

  • mightguy15mightguy15 Posts: 56
    Richard Haseltine said:

    I don't know about "properly", but areas that rely on bounced light (rather than light directly shining on them) take longer to converge (lose the noise). "Ghost lights", a plane with the Emissive preset applied and their Cutout Opacity set to nerarly but not quite zero, can be used to fill such areas in - and then you can use the Tone Mapping group in Render Settings, or an image editor, to get the look you want.

    Hey, thanks so much for that info! I'm about to give it a shot.

  • mwasielewski1990mwasielewski1990 Posts: 343
    edited July 2020

    We need more information to help you out.

    How many minutes/hours did it take to render the image you shown?

    What light sources are present on the scene?

    Perhaps your video card is old/slow, and/or has not enough video memory to render that scene and your render is dropping to your processor.

    The fastest method would be to use a HDRI to light up the scene (just search the term in wikipedia or somehting, the topic is too long to copy/paste it here :P ).

    If the scene is an enclosed circle, try to look in the scene inspector tab, if one of the walls (that is not in camera viewport) can be removed - this will let the light from the HDRI to fill the scene.

    EDIT: if you want to get rid of the grain/noise quickly, but to sacrifice some quality, you can use IRAY's post-denoiser.

    1) In RENDER SETTINGS section, find a tab named "FILTERING"

    2) in FILTERING, click POST DENOISER AVAILABLE to ON

    3) click POST DENOISER ENABLE to ON

    4) set POST DENOISER START ITERATION to something like 100, for example. After rendering 100 iterations, the rendering engine will smooth out the grain out of the image, but unfortunately losing some detail from it.

    Other method would be re-designign the lighting of the whole scene, or buying a better graphics card :)

    Post edited by mwasielewski1990 on
  • mightguy15mightguy15 Posts: 56
    mwasielewski1990 said:

    We need more information to help you out.

    How many minutes/hours did it take to render the image you shown?

    What light sources are present on the scene?

    Perhaps your video card is old/slow, and/or has not enough video memory to render that scene and your render is dropping to your processor.

    The fastest method would be to use a HDRI to light up the scene (just search the term in wikipedia or somehting, the topic is too long to copy/paste it here :P ).

    If the scene is an enclosed circle, try to look in the scene inspector tab, if one of the walls (that is not in camera viewport) can be removed - this will let the light from the HDRI to fill the scene.

    EDIT: if you want to get rid of the grain/noise quickly, but to sacrifice some quality, you can use IRAY's post-denoiser.

    1) In RENDER SETTINGS section, find a tab named "FILTERING"

    2) in FILTERING, click POST DENOISER AVAILABLE to ON

    3) click POST DENOISER ENABLE to ON

    4) set POST DENOISER START ITERATION to something like 100, for example. After rendering 100 iterations, the rendering engine will smooth out the grain out of the image, but unfortunately losing some detail from it.

    Other method would be re-designign the lighting of the whole scene, or buying a better graphics card :)

    Hmm, well, I'm not too computer savvy. My graphics card something called the amd radeon r5 graphics graphics card. After some searching, I discovered the family of cards have been around for no earlier than 2014 and it has 5 cores. I have no god given clue what that means, but that better be good because this laptop wasn't cheap lol.

     

    Hmm, I started this render here before I went to work, so it was able to fully finish. I want to say it probably took around 4 hours.

     

    As for light sources, this specific image has none. I just hit render and it seems Daz did the lighting automatically. I have tried using HDRIs and spotlights, but despite the fact they help make the scene brighter, the noise still remains. I have yet to try the denoiser or to start tampering with the settings. I am also 100 percent sure it's probably because I am doing something wrong. I just found out about ghost lights and was trying to give that a shot, because before I wasn't using anything but the distance lights and spotlights.

     

    But you know what! I never thought to maybe try using HDRIs and simply removing the roof of the building. I'm going to try that plus using the denoiser and post the results here. Thank you so much for the helpful information, hopefully this works!

  • SevrinSevrin Posts: 6,306
    mightguy15 said:
    mwasielewski1990 said:

    We need more information to help you out.

    How many minutes/hours did it take to render the image you shown?

    What light sources are present on the scene?

    Perhaps your video card is old/slow, and/or has not enough video memory to render that scene and your render is dropping to your processor.

    The fastest method would be to use a HDRI to light up the scene (just search the term in wikipedia or somehting, the topic is too long to copy/paste it here :P ).

    If the scene is an enclosed circle, try to look in the scene inspector tab, if one of the walls (that is not in camera viewport) can be removed - this will let the light from the HDRI to fill the scene.

    EDIT: if you want to get rid of the grain/noise quickly, but to sacrifice some quality, you can use IRAY's post-denoiser.

    1) In RENDER SETTINGS section, find a tab named "FILTERING"

    2) in FILTERING, click POST DENOISER AVAILABLE to ON

    3) click POST DENOISER ENABLE to ON

    4) set POST DENOISER START ITERATION to something like 100, for example. After rendering 100 iterations, the rendering engine will smooth out the grain out of the image, but unfortunately losing some detail from it.

    Other method would be re-designign the lighting of the whole scene, or buying a better graphics card :)

    Hmm, well, I'm not too computer savvy. My graphics card something called the amd radeon r5 graphics graphics card. After some searching, I discovered the family of cards have been around for no earlier than 2014 and it has 5 cores. I have no god given clue what that means, but that better be good because this laptop wasn't cheap lol.

     

    Hmm, I started this render here before I went to work, so it was able to fully finish. I want to say it probably took around 4 hours.

     

    As for light sources, this specific image has none. I just hit render and it seems Daz did the lighting automatically. I have tried using HDRIs and spotlights, but despite the fact they help make the scene brighter, the noise still remains. I have yet to try the denoiser or to start tampering with the settings. I am also 100 percent sure it's probably because I am doing something wrong. I just found out about ghost lights and was trying to give that a shot, because before I wasn't using anything but the distance lights and spotlights.

     

    But you know what! I never thought to maybe try using HDRIs and simply removing the roof of the building. I'm going to try that plus using the denoiser and post the results here. Thank you so much for the helpful information, hopefully this works!

    There are a couple of issues.  Daz Studio can't use an AMD card for rendering, mostly because the GPU render engine was developed by the other big name in graphics cards, Nvidia.  Your renders will therefore only run on your CPU.

    The denoiser built into Daz Studio is also an Nvidia product, and is also not an option.  There is another denoiser you can hook into Daz from Intel.  That one is discussed here.  I believe there's another option, I believe, but this is the only other one I've used.  Perhaps someone else could chime in on that.

    https://www.daz3d.com/forums/discussion/334881/use-this-a-i-based-open-source-de-noiser-from-the-comfort-of-daz-studio/p1

  • mightguy15mightguy15 Posts: 56

     

    Sevrin said:
    mightguy15 said:
     

     

    Hmm, I started this render here before I went to work, so it was able to fully finish. I want to say it probably took around 4 hours.

     

    As for light sources, this specific image has none. I just hit render and it seems Daz did the lighting automatically. I have tried using HDRIs and spotlights, but despite the fact they help make the scene brighter, the noise still remains. I have yet to try the denoiser or to start tampering with the settings. I am also 100 percent sure it's probably because I am doing something wrong. I just found out about ghost lights and was trying to give that a shot, because before I wasn't using anything but the distance lights and spotlights.

     

    But you know what! I never thought to maybe try using HDRIs and simply removing the roof of the building. I'm going to try that plus using the denoiser and post the results here. Thank you so much for the helpful information, hopefully this works!

    There are a couple of issues.  Daz Studio can't use an AMD card for rendering, mostly because the GPU render engine was developed by the other big name in graphics cards, Nvidia.  Your renders will therefore only run on your CPU.

    The denoiser built into Daz Studio is also an Nvidia product, and is also not an option.  There is another denoiser you can hook into Daz from Intel.  That one is discussed here.  I believe there's another option, I believe, but this is the only other one I've used.  Perhaps someone else could chime in on that.

    https://www.daz3d.com/forums/discussion/334881/use-this-a-i-based-open-source-de-noiser-from-the-comfort-of-daz-studio/p1

    Oh, I see. So the issue is most likely the card huh? That sucks.

     

    Thanks for that denoiser link though, I'm definately going to check that out. Also, the render is actually almost done. It's still a bit grainy, but waaaaay better than the one I originally posted.

     

    Update: So I tried everything you guys suggested. Better lighting, using denoisers and letting the render actually finish (eh prolly should have been doing that from the get go).

     

    Good news, it worked!!!!

     

    I included two images in the instance one is a broken link again. This took a really long time, around 20 hours to render and it still isn't done. But it looks like a dream. Thanks guys!

Sign In or Register to comment.