Texture mapping pain and crash report

[David53 (David)]

If you are having problems with waiting, you can always try to improve matters in the Bella GUI using the Region render. Maybe using it in the box highlighted will give you the full dynamic range impression of the image, while cutting the render time, and you can keep all of your camera settings.

[Akash]

thank you David
I still need to learn how to use the GUI… and when it is better to use it then the Rhino viewport

[Gijs (Gijs de Zwart)]

I played around with the texture a bit more. I think it makes sense that you try to remove any of the white wash from that texture before using it in your rendering.

[David53 (David)]

I had a go myself using various methods you may or may not find helpful. I began with Gijs image, as it seemed very reasonable.

I have uploaded various files into a single Onedrive loation, and you are free to go through and take the lot if you want. No offense if you don’t find them useful.

Gijs_Original.jpg → The original file I used
Gijs_Upscale2x → This is upscaled by 2x AI upscaler in Python and then denoised using a generic denoiser, and then a small AA filter to erase the fixed-scale patchworking caused presumably due to repeated compression. I am hoping this is where some of your graining was coming from.

I then thought that there was dark banding in the small-scale details, something I used to deal with using curvelets and wavelets. So there is also a wavelet decomposition using 10 fixed scales, where the second scale is removed. I think this scale holds the most information about the dark banding around the bright, small-scale details.

Gijs_Upscale2x_WaveletS2Rem → Wavelet decomposition, second spatial scale removed

And finally, I applied several fairly aggressive gamma adjustments (G-N%) to remove the whitewashing. In reality, this could do with some form of removal with a falloff from the centre, but it’s worth a try this way, as I need to go to bed.

The gamma adjustment versions I would imagine are best used in Bella with the similar Uber material you have tried before, so you can apply a top layer (or whatever it was a month ago) to recover the milky effect, and you can manage your roughness of “polish” there too…

Gijs_Upscale2x_WaveletS2Rem_G-10
Gijs_Upscale2x_WaveletS2Rem_G-15
Gijs_Upscale2x_WaveletS2Rem_G-20

https://1drv.ms/f/s!AiIKoOHLZRuVhH7UX4lLZvqU6eQK?e=Nfq3mF

Anyway, it was a bit of fun to do!

[Akash]

Thanks a lot @Gijs @David53 @jdhill

I’ll try Tomorrow [it’s 4am here] with the cleaned up/ upscaled textures… my own effort to do a good texture from this image was not very successful.

I have the original old .raw image of that stone if useful ?

[Akash]

This is what I’m getting with the G-10 upscale David shared of Gijs’s cleaned texture.
It is way short from the very good results Gijs got…
the material are different, as I’m trying to get it optimized within Bella [There will be diamonds in the scene, so using Cycle is not an option]