Outerra forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Outerra Tech Demo download. Help with graphics driver issues

Author Topic: White balance  (Read 23875 times)

cameni

  • Brano Kemen
  • Outerra Administrator
  • Hero Member
  • *****
  • Posts: 6721
  • No sense of urgency.
    • outerra.com
White balance
« on: July 28, 2011, 06:29:07 pm »

Blog about white balance has been posted.

Logged

ZeosPantera

  • ||>>-Z-<<||
  • Global Moderator
  • Hero Member
  • *****
  • Posts: 2520
  • #1 Outerra Fan Boy
    • My Youtube
White balance
« Reply #1 on: July 29, 2011, 05:29:16 am »

Wow. Not sure what to say. White balance had to come in at some point but the before and after both look really good. Maybe a middle ground.

Are sunsets less colorful because of this?
Logged
"Fear accompanies the possibility of death, Calm shepherds its certainty" - General Ka Dargo

cameni

  • Brano Kemen
  • Outerra Administrator
  • Hero Member
  • *****
  • Posts: 6721
  • No sense of urgency.
    • outerra.com
White balance
« Reply #2 on: July 29, 2011, 06:13:07 am »

Yes, the sunsets changed, they are more yellow with WB, but I'm sure that this part is not entirely right. During the sunsets the contribution of sun to the computation of WB is minimal, because the angle of sun rays is almost parallel with respect to the measuring surface. But as I think about it more, our brains aren't constrained to perceiving white on horizontal surfaces, and something has to be done about it.

It seems to be right up until the sun approaches the horizon, while the sky is still lighted well, but then it needs to be adjusted, maybe slowly suppressing the WB effect.

Also, the sun disc isn't right size, should get bigger and possibly deformed near the horizon as the optical depth rises.
Logged

PeterBitt

  • Member
  • **
  • Posts: 62
White balance
« Reply #3 on: July 29, 2011, 08:41:42 am »

i always get so excited when i see new threads in the development sreenshot section!
these pics are awesome, whitebalance increases realism very much i think (especialy pic wb7 looks great with it).

damn i want to roam through that landscape NOW!  ;)

but is the last pic "wb5" before or after whitebalance? i think that the sea is a lot to orange compared to the yellow sky and overall it reflects the sky color to much.
see on this pic http://www.vacationreview.com/wp-content/uploads/2008/06/cape-may1.jpg how little the sea is reflecting the orange color, its just that direct sun reflection thats pretty orange.
Logged

cameni

  • Brano Kemen
  • Outerra Administrator
  • Hero Member
  • *****
  • Posts: 6721
  • No sense of urgency.
    • outerra.com
White balance
« Reply #4 on: July 29, 2011, 10:08:20 am »

Yes, too orange. Looks as if the reflections used uncorrected light there. Will investigate :)
Logged

ZeosPantera

  • ||>>-Z-<<||
  • Global Moderator
  • Hero Member
  • *****
  • Posts: 2520
  • #1 Outerra Fan Boy
    • My Youtube
White balance
« Reply #5 on: July 30, 2011, 12:53:36 am »

Quote from: cameni
Yes, the sunsets changed, they are more yellow with WB, but I'm sure that this part is not entirely right.

If you walked around with a white piece of paper all day and looked at it in different locals indoor and out and at different times of day it would change color to the eye in almost every instance. Noon on a sunny day, white. Sunset, orange. Florescent lights, green-ish. etc.

Tweak tweak away!
Logged
"Fear accompanies the possibility of death, Calm shepherds its certainty" - General Ka Dargo

cameni

  • Brano Kemen
  • Outerra Administrator
  • Hero Member
  • *****
  • Posts: 6721
  • No sense of urgency.
    • outerra.com
White balance
« Reply #6 on: July 30, 2011, 02:47:05 am »

Instant color yes, but if you let it adapt, or if the lighting changes slowly .. the difference can be best seen on a digital camera without automatic WB correction.
Logged

flightmaster

  • Jr. Member
  • *
  • Posts: 28
White balance
« Reply #7 on: July 30, 2011, 12:51:23 pm »

I have taken a look at the white balanced photos, and I have to say, they look much more photo-realistic... well, except for the sunsets. But, i would like to congratulate you on your already superb engine, and hope that you will release a demo soon (screw AMD's engineers  :D  :(  :mad: ).
Logged

C. Shawn Smith

  • Hero Member
  • *****
  • Posts: 712
    • C. Shawn Smith's Art Gallery & Portfolio
White balance
« Reply #8 on: July 30, 2011, 02:38:55 pm »

Something I just noticed in the screenshot below: I can see ripples in the sand, as if from a high tide :D.  I haven't noticed that in other screenshots.

Logged
What we think, we become -- Buddha
There is no spoon -- Neo, The Matrix
The Cosmos is all that is, or ever was, or ever will be. -- Carl Sagan
Outerra is all that is, or ever was, or ever will be. -- Me :)
- Yes, I'm still around ... just been busy with other projects ;)

flightmaster

  • Jr. Member
  • *
  • Posts: 28
White balance
« Reply #9 on: July 30, 2011, 03:03:03 pm »

they've been holding out on us!  :|  :o
Logged

cameni

  • Brano Kemen
  • Outerra Administrator
  • Hero Member
  • *****
  • Posts: 6721
  • No sense of urgency.
    • outerra.com
White balance
« Reply #10 on: July 30, 2011, 05:15:08 pm »

Oh, it's out. Ripples in the sand. Next they'll find the footprints :O

You can see them pretty well also in the older . It's actually an artifact of the pseudo-random number generator that tends to produce it in certain conditions. I actually thought I had it fixed already, but no.

We'll make a feature out of it! :)
Logged

flightmaster

  • Jr. Member
  • *
  • Posts: 28
White balance
« Reply #11 on: July 30, 2011, 07:54:33 pm »

looking at the underwater video again, i noticed that there were areas with overhangs, specifically at 0:22. I am wondering if you might be able to adapt that to cliffs, canyons and such.
Logged

C. Shawn Smith

  • Hero Member
  • *****
  • Posts: 712
    • C. Shawn Smith's Art Gallery & Portfolio
White balance
« Reply #12 on: July 30, 2011, 10:23:55 pm »

Quote from: cameni
Oh, it's out. Ripples in the sand. Next they'll find the footprints :O

You can see them pretty well also in the older . It's actually an artifact of the pseudo-random number generator that tends to produce it in certain conditions. I actually thought I had it fixed already, but no.

We'll make a feature out of it! :)

Sweet ... I just vaguely recall that now that you pointed it out.  It does look very cool though.

And it will likewise be cool if you can actually reproduce high and low tides in the engine ;)
Logged
What we think, we become -- Buddha
There is no spoon -- Neo, The Matrix
The Cosmos is all that is, or ever was, or ever will be. -- Carl Sagan
Outerra is all that is, or ever was, or ever will be. -- Me :)
- Yes, I'm still around ... just been busy with other projects ;)

cameni

  • Brano Kemen
  • Outerra Administrator
  • Hero Member
  • *****
  • Posts: 6721
  • No sense of urgency.
    • outerra.com
White balance
« Reply #13 on: July 31, 2011, 03:18:25 am »

Quote from: flightmaster
looking at the underwater video again, i noticed that there were areas with overhangs, specifically at 0:22. I am wondering if you might be able to adapt that to cliffs, canyons and such.
You'll be able to find them anywhere where the terrain was steep enough. They are created by the horizontal displace effect.
Logged

Bartolomeus

  • Sr. Member
  • ****
  • Posts: 288
    • VirtualTechArt Design
Re: White balance
« Reply #14 on: September 29, 2011, 07:05:10 am »

I like the pictures with the "white balance". This "theme" looks really great.

And of course, i love the underwater video.  ;)