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drawovis

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Reply with quote  #16 
My guess is your softbox is still using the same white color as the toys. (or visa versa) In the last render you turned the LEM down of that softbox? Then all the others with that same material will also get dark.
Take a look at the toys: all the whites seems to give light.
You can simply test this by turning the color of the soft box in something like red. If the toys also change in red then they are of the same material..
Knipsel.png 
Make all the (white) materials of your toys Unique and then check the LEM.
And don't forget the Analyse Tool (wrench) to see how many faces have LEM.


qkarmark

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Reply with quote  #17 
OK, here's an update.... and I'll credit @drawovis with helping me discover something I was not previously aware. Attached is my latest (medium-resolution) output with slight Photoshop tweaks. The lighting is rather close to what I wish to achieve now.
@drawovis, you were correct, you've helped me identify that using default "materials" inside SketchUp is not recommended: instead, they should be defined and named, even when it's a simply colour like grey, white or blue etc. and then that way anything used as an LEM will not get confused with elements and materials in the physical model. thanks for your help!

  table-hockey.png

drawovis

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Reply with quote  #18 
I'm glad it worked out. [smile] It looks a lot better!
It is indeed wise to give all materials a unique name, especially materials with LEM.
(btw the Rubiks Cube still has a white that gives light.)
Johnic07

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Reply with quote  #19 

Hey Nick,

Below is a raw, unedited render of a bar scene I have created. 
Firstly, I'm not sure how to remove the white noise on the tiled wall. This only appeared when rendering on Podiums Interior_High setting. I can use PS to edit out however, thought there might be a way to prevent this from happening in the future. I will use PS to adjust light levels and add realistic vegetation (although if there is a way to render vegetation more realistically I'd be all ears).

Any other tips for improvement would be appreciated!

Thanks!


1801_GENERAL PUBLIC_REV C-0 2018-11-18 12504400000.png 


bigstick

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Reply with quote  #20 
Nice render! This is  a well-known issue I'm afraid. Sometimes we get noise with blurred reflection and reflected artificial lights.

I'm not sure what the fix is. You could try using the fine AA preset instead.

Rendering vegetation isn't problematic. You just need decent enough models. The difficulty is with the polygon count, which hits render time, sometimes quite hard.

You can make leaves translucent or even slightly reflective. Bear in mind that both of these things will increase render time.

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Johnic07

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Reply with quote  #21 
Thanks Bigstick! 

That's unfortunate! Does it help to reduce reflection or blur?

I will give AA a shot though, and also have a play with the vegetation's properties.

Thanks for your help!
bigstick

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Reply with quote  #22 
What the fine AA preset can do is smooth the speckles so they look better. Although it doesn't improve quality at all, the fie AA preset has the beneficial effect of applying a pixel filter over the whole image, which makes it look nicer. Unfortunately there is a cost for that in terms of time.

Because of this we don't have any high,fineAA presets.

Generally the fine AA presets are for very fine line details like shadow gaps and cables, but they do reduce moiré effect on noisy textures.

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Nick00

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Reply with quote  #23 
Hi Johnic, 

In your case it seams the bump on the tile is making the noise worst. Have you tried to set it to zero? Having a viewpoint that far from the tile it would probably look better with less noise than with bump.

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bigstick

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Reply with quote  #24 
It's worth mentioning that for the vast majority of textures most of the time, bump is better left at 0. From a distance you won't see the bump, and it can make the texture look grainy or speckled.
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Johnic07

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Reply with quote  #25 
Hey Everyone,

Thanks for all the tips.

I've reduced bump to 0 on all elements which aren't in the immediate foreground. It's helped with the issue of noise as well as significantly reduced render time.

I'm still tweaking the image but have come across another issue - shadows don't appear in final render as shown in model. Any one know why?

Thanks again!! Capture.png  1801_GENERAL PUBLIC_REV CRENDER13 2018-12-02 00550700000.png 

bigstick

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Reply with quote  #26 
We would have to see how your scene is set up to see why the shadows look different.


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