CoolColJ's test pics thread

CoolColJ · Post by **CoolColJ** » Sun Sep 02, 2007 11:01 pm

never used that - gees lots I haven't tried in Indigo yet!

problem is a lot of stuff in Indigo doesn't have guidelines for useful values yet . I guess eventually the wiki will be full of that....

Kram1032 · Post by **Kram1032** » Sun Sep 02, 2007 11:23 pm

I just meant, cbc is currently the slowest (CPUmeltingest) thing, you can do

CoolColJ · Post by **CoolColJ** » Mon Sep 03, 2007 12:10 am

ahh ok, well water with glass and SSS in the same scene is bad enough....

5000 samples a sec and 180+ microseconds per sample is about as low as I want to go

CoolColJ · Post by **CoolColJ** » Mon Sep 03, 2007 11:45 am

playing around with BbB's scratch map - cool

used it on both bump and exponent - looks hyper real!
Although I didn't let them render that long, so would look even better with more details and better shading if I let it cook for more

for some reason anytime you use a light like that to give a flash type look, it looks a lot like a real photo, but use normal lights or sunlight and it doesn't quite look as good...

nice - I might turn this into a proper final render image

BbB · Post by **BbB** » Mon Sep 03, 2007 9:04 pm

Nice. Glad you could find a use for it!

CoolColJ · Post by **CoolColJ** » Tue Sep 04, 2007 12:45 am

thanks for the map

Kram1032 · Post by **Kram1032** » Tue Sep 04, 2007 2:35 am

looks amazing

I like the 2nd and the 4th most

CoolColJ · Post by **CoolColJ** » Tue Sep 04, 2007 12:48 pm

I rendered that room pic with exit portal in my Render modes thread a bit more and this is the Bidrectional MLT version after a few more hours, probably needs another 5 hours to really clean up on my slow PC

http://www.indigorenderer.com/joomla/fo ... 0407#28608

Tone mapped in Voilet, and added some bloom, also tried out median noise reduction filter which does an amazing job of killing those spots on and around the diffuse transmitter cushion - but sure kills the detail and sharpness ala Maxwell and Fry.....

Hopefully Ono can fix diffuse transmitters so they don't do this. You can see the legs of the cushion transmit through the material

Honestly I really think Maxwell does a filter like this when using it's main render mode, as the preview mode is sharper and has some spots...

CTZn · Post by **CTZn** » Tue Sep 04, 2007 2:25 pm

YES this image deserves to be rendered to the end of noise, really beautyfull !

Now I have a question: is that really possible to have the same output using two different tonemapping methods, furthermore using one wich is linear and the other not ? I have no explication on what I'm seeing right now... lack of experience from my part for sure.

Should I repeat that ? Yeah: beautyfull images !

CoolColJ · Post by **CoolColJ** » Tue Sep 04, 2007 2:33 pm

thanks

Violet alows you to output either Linear or Reinhard tone mapped images from the same IGI file
Is that what you mean?

I saved out 2 sets of images from Voilet, one with Linear and one with Reinhard. I couldn't decide which I liked better, so I kept swapping em back and forwards

CTZn · Post by **CTZn** » Tue Sep 04, 2007 4:31 pm

But, what I mean is that they are identical in color ranges, I wasn't expecting that at all !!! Are you sure that they are not both Reinhard ? At least that's what I'm wondering...

Edit: well, I've done some tests directly with Indigo (having doubts on Violet reliability), and indeed you can get pretty similar results. I didn't know that, I used linear the first time for that last wip I did recently.

No wonder why you couldn't choose one, apart noise removal I see no signicative difference !

CoolColJ · Post by **CoolColJ** » Tue Sep 04, 2007 6:45 pm

well yeah they are kinda similar, but it's down to the settings this scene imposes on you, so there isn't much range to adjust anyway. The Reinhart version is a little lighter in the right side of the pic

I did set burn for Reinhart much lower than I usually would, 3 in this case which burns out part of the image, and makes it look similar Linear in that respect. I was gonna use a burn of 4 which would make it look less contrasty and more "grey"

Voilet should be the same as the tone mapping in Indigo and the Indigo Tonemapper anyway

Except you do have more options in Voilet. There are probably other software you can use to do tonemapping. I know there are a lot more tonemapper types than just Reinhart and some look much better.

CTZn · Post by **CTZn** » Tue Sep 04, 2007 7:21 pm

Me again on tonemapping

Well I believe it's not exactly the same but close, for some reason, values are good enough but hue changes. I'm not using Violet much, unless for camera bloom when needed because of that. I set tonemp in Indigo and that's it !

Btw am I wrong when I assume that burn value is meaningfull only when prescale value is known (ie that the result when burn set to 3 or 4 depends on prescale) ? My understanding of reinhard TM is that, if prescale is lower or equal to burn, then no burn occurs (if postscale unchanged (1))... is that correct ?

CoolColJ · Post by **CoolColJ** » Tue Sep 04, 2007 7:41 pm

what about the Indigo Tonemapper program that comes with Inidgo, that has the basic Reinhard tonemapping in it, and Gaussian bloom. No linear mapping though for some reason....

well I guess you need to get the tone mapping set up right from the start, which I find harder than expected, since the look changes after a few hours. So I only setup a basic look for rendering. And some exporters like SKindigo has hardwired Reinhard values. Although you can hand edit em in

You can turn on bloom in Indigo too I think

This is why I do tonemapping post render.
Well my approach is to leave everything at one and then set the Burn to where the brightest areas are just starting to white out as needed. Then use the pre-scale to brighten up the overall image like an exposure control as needed. It doesn't touch the brightest spot, more the average values.
I rarely touch post-scale because it cranks up all values towards white which will mean your already burn out areas get even more burnt etc

CoolColJ · Post by **CoolColJ** » Tue Sep 04, 2007 7:48 pm

tonemapping! See what I mean by the "grey" look of Reinhard I complain about?

http://www.cs.huji.ac.il/~danix/itm/Comp/index.html

are their programs that can read Indigo's IGI?
I guess you could resume the render and change the inifile to save out an untonemapped EXR and convert to HDR or something for processing in other tonemappers

I want to try this one http://www.cs.huji.ac.il/~danix/itm/index.html
Could be added to Voilet - with the paper there

CoolColJ's test pics thread

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