Beyond3D Forum

rdocckbezxu · 18-Jan-2006, 20:37

The Wikipedia article on high dynamic range rendering is in need of some help from people who actually know some facts about it and don't just get their information from gaming sites. If anyone here wants to take a look at http://en.wikipedia.org/wiki/High_dy...ange_rendering and fix it up.

Farid · 19-Jan-2006, 09:55

Quote:

HDRR is also supported in very limited forms on PlayStation 2, GameCube, and Xbox, but fully supported in the Xbox 360, PlayStation 3, and possibly in Nintendo Revolution.

I'm starting to think that HDR is the least understood, by the gaming crowd, technique ever.

london-boy · 19-Jan-2006, 10:07

Quote:

Originally Posted by Vysez

I'm starting to think that HDR is the least understood, by the gaming crowd, technique ever.

That woud be a close call with realtime-prerendered stuff too.

K.I.L.E.R · 19-Jan-2006, 10:40

I thought HDR was about displaying colours that even the monitor cannot display?
It does that by using tricks.

I think it was:
Render->texture
Apply grayscale to texture
Apply guassian blur to texture
Add the last 2 textures with original texture to get a HDR image
In motion this creates illusion that allows eye to see more than what's really there.

Right or wrong?

Frank · 19-Jan-2006, 18:57

Almost. You forget the two most important things:

1. Make they grayscale images for multiple resolutions, down to very small, incease the contrast of all of them quite a bit and add them all together again before blurring them.

2. Slowly adjust the intensity, to fake your eyes adjusting to the changed intensity (the "dynamic"part that makes it more than a bloom filter).

18-Jan-2006, 20:37	#1
rdocckbezxu Registered Join Date: Jan 2006 Posts: 0	Wikipedia article on High Dynamic Range rendering The Wikipedia article on high dynamic range rendering is in need of some help from people who actually know some facts about it and don't just get their information from gaming sites. If anyone here wants to take a look at http://en.wikipedia.org/wiki/High_dy...ange_rendering and fix it up.

19-Jan-2006, 10:40	#4
K.I.L.E.R Retarded moron Join Date: Jun 2002 Location: Australia, Melbourne Posts: 2,949	I thought HDR was about displaying colours that even the monitor cannot display? It does that by using tricks. I think it was: Render->texture Apply grayscale to texture Apply guassian blur to texture Add the last 2 textures with original texture to get a HDR image In motion this creates illusion that allows eye to see more than what's really there. Right or wrong? __________________ I eat coffee.

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19-Jan-2006, 18:57	#5
Frank Certified not a majority Join Date: Sep 2003 Location: Sittard, the Netherlands Posts: 3,182	Almost. You forget the two most important things: 1. Make they grayscale images for multiple resolutions, down to very small, incease the contrast of all of them quite a bit and add them all together again before blurring them. 2. Slowly adjust the intensity, to fake your eyes adjusting to the changed intensity (the "dynamic"part that makes it more than a bloom filter).

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