Wikipedia article on High Dynamic Range rendering

Discussion in 'General Discussion' started by rdocckbezxu, Jan 18, 2006.

  1. rdocckbezxu

    Newcomer

    Joined:
    Jan 18, 2006
    Messages:
    0
    Likes Received:
    0
    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_dynamic_range_rendering and fix it up.
     
  2. Farid

    Farid Artist formely known as Vysez
    Veteran Subscriber

    Joined:
    Mar 22, 2004
    Messages:
    3,844
    Likes Received:
    108
    Location:
    Paris, France
    I'm starting to think that HDR is the least understood, by the gaming crowd, technique ever.
     
  3. London-boy

    London-boy Shifty's daddy
    Legend Subscriber

    Joined:
    Apr 13, 2002
    Messages:
    21,509
    Likes Received:
    5,154
    That woud be a close call with realtime-prerendered stuff too.
     
  4. K.I.L.E.R

    K.I.L.E.R Retarded moron
    Veteran

    Joined:
    Jun 17, 2002
    Messages:
    2,952
    Likes Received:
    50
    Location:
    Australia, Melbourne
    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?
     
  5. Frank

    Frank Certified not a majority
    Veteran

    Joined:
    Sep 21, 2003
    Messages:
    3,187
    Likes Received:
    59
    Location:
    Sittard, the Netherlands
    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).
     
Loading...

Share This Page

  • About Us

    Beyond3D has been around for over a decade and prides itself on being the best place on the web for in-depth, technically-driven discussion and analysis of 3D graphics hardware. If you love pixels and transistors, you've come to the right place!

    Beyond3D is proudly published by GPU Tools Ltd.
Loading...