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HDRI creation question: how to create flat bottom on spherical image?

posecastposecast Posts: 386
in The Commons

Hi. I have noticed on a few of the nice hdris released recently that they seem to have a flat bottom. I am wondering how this warping is achieved. My own spherical 360 camera stitching software outputs completely spherical images, but some of the ones in daz seem to be spherical with a flat-bottom. Any idea of how this is done would be appreciated.

Thank you!

Comments

  • WendyLuvsCatzWendyLuvsCatz Posts: 38,205

    If it was photographed on a flat surface it should appear to be with the floor enabled

    since you need at least two images and a tripod most would be taken on a flat surface

    however if you had a drone with two fisheye lenses mounted opposite you would obviously be in mid air.

  • posecastposecast Posts: 386

    It is a 360 camera mounted on a tripod at about 5 feet high.I will give it a shot! Thank you!

  • WendyLuvsCatzWendyLuvsCatz Posts: 38,205
    edited January 2018

    https://wendyluvscatz.deviantart.com/art/1-651686659

    my stitching kind of sucks (and I didn’t use a tripod to take the two shots)

    and it’s not a HDRi

    Post edited by WendyLuvsCatz on
  • posecastposecast Posts: 386

    That did it! Image quality with 360 camera sucks, but one day it will be good i think!

  • algovincianalgovincian Posts: 2,610
    posecast said:

    Hi. I have noticed on a few of the nice hdris released recently that they seem to have a flat bottom. I am wondering how this warping is achieved. My own spherical 360 camera stitching software outputs completely spherical images, but some of the ones in daz seem to be spherical with a flat-bottom. Any idea of how this is done would be appreciated.

    Thank you!

    Not sure which products you are talking about, but in IRay, choosing "Infinite Sphere w/Ground" for a dome mode should do the trick. The actual HDRI is the same as normal.

    - Greg

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