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amorican

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Reply with quote  #1 
really loving the inclusion of HDRI with the latest update.  it's taken a lot of guess work, tweaking, and re-rendering, etc. out of the process. 

but i'm having an issue with noise, in this case, with my siding texture.  it's better if i use exterior_fine rather than _default.  i know the client will notice when i finally render at 1920x

I'm hoping to eliminate the noise altogether.  any ideas? apts.jpg

also, any suggests with the grass?  i'm not terribly happy with it.
any other tips also welcome.  [smile]

thx

bigstick

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Reply with quote  #2 
For IBL images, it's always better to use the fine presets. The AA smoothing also smoothes the noise on the textures. It does take quite a bit longer, but it's worth it.
The other solution is to render twice as large as you need, and reduce the resolution by half. This also smoothes the noise.

Alternatively you can use a denoise algorithm. Some are better than others, and there are some free ones available. Be aware that results vary a lot from image to image and from one denoiser to another.

However they can work very well indeed.

Dave has spent a lot of time with different ones. He will make some recommendations, but that's something the community might be better at collectively!

Looks like you have used 2.5d/3d grass. It's a bit repetitive. Use the Podium Nudge tool to randomise it a bit.

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amorican

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Reply with quote  #3 
Sorry, what is IBL?
davew

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Reply with quote  #4 
HDRI/ IBL - IBL is image based lighting.  For Podium HDRI backgrounds and IBL are the same thing. 
OK. We actually were developing a denoiser for SU Podium V2.6.  It works pretty well but there's a few steps to take in using it so we deferred implementing it to focus on SU Podium V3 which we think will have very little HDRI/ IBL noise.

But I would recommend Topaz Denoise AI.  https://topazlabs.com/denoise-ai/
It's $79 but you can find it for $50.00

Noise using HDRI/ IBL backgrounds is especially apparent in interior renderings even if you use interior_fine_AA.  So using Denoiser AI seems to work pretty well - not perfect.
Here is a before and after:
test-office-hdr-noise-topaz2.png  test-office-hdr-noise-topaz-denoise.png  But if you truly want a perfectly no-noise interior scene using HDRI/ IBL lighting, use ProWalker GPU (if you have a Windows computer with good Nvidia GPU)

bigstick

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Reply with quote  #5 
IBL - Image based Lighting is the correct term for illuminating a scene with a 180 or 360 degree image.

HDR stands for High Dynamic Range. It is a method of combining photographs from different exposures to avoid 'bracketing'. This occurs because cameras can only capture a restricted range of lighting.

You have seen examples where you are looking at an interior with a window, and you can see both the scenery outside the window, and the detail in the shadows in the corners where there isn't as much light.

If you take a photograph, you will either end up with either:

a) The window overexposed and not being able to see any detail outside, but you can see the detail in the darker areas
b) The view externally being visible, but detail in the corners is all black 

HDR photography in effect combines these so you can see the full range of tones in the same image. It has a new file format because jpg and png images are limited to the range of colours & tones that the file format can support. 
If you render interiors in Podium, you have an option to use an HDR format. This is the best one to use because the format captures a higher number of colours and tones, when you post-process images, you don't get the characteristic banding that occurs with jpg and to a lesser extent - png.

HDRI is High Dynamic Range Imaging, it's a blanket term for images using HDR principles.

HDRI in renders tries to capture the full tonal (and colour) range.

It actually isn't related to using background images for lighting in any respect other than the fact that HDRI format images are always used for the background lighting.





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amorican

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Reply with quote  #6 
Thanks for the info and feedback, guys.
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