Oliver Kreylos

@okreylos

I build holodecks for a living.

Davis, CA
doc-ok.org
Joined March 2013
157 Photos and videos Photos and videos

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  1. Sep 1

    Saw this: and it reminded me of VR ProtoShop, so I dug this old video out of the vault:

    2 retweets 9 likes
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  2. Aug 8

    Magic Leap One is officially out, and real reviews are appearing: TL;DR: Somewhat improved and somewhat cheaper HoloLens.

    1 reply 1 retweet 11 likes
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  3. Aug 7

    I recorded a short video explaining a VR visualization we created for a UC Davis climate change event a while ago:

    6 likes
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  4. Jul 31

    I replaced my Vive's stock foam pad with a 6mm VR Cover, and my effective FoV went up from 101° to 106° (measured using in-VR test app). It's a little too wide on the sides, but I'm going to stick with it for now.

    4 likes
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  5. Jul 30

    Credit where it's due: the photosphere I used in the previous tweet was donated by redditor /u/PhotoChemicals . I originally used it for parallax rendering experiments:

    Undo
  6. Jul 30

    Another one, based on a real panoramic photograph following 's suggestion, still in perspective projection, and hopefully labeled less confusingly: The person in the center is about 7 feet away.

    8 replies 36 retweets 95 likes
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  7. Jul 30

    Just for fun: an environment rendered with perspective projection at 110°x113° (Vive's max. FoV), with inset frames for Rift's, Magic Leap One's, and HoloLens's FoVs (in outside-in order).

    1 reply 19 retweets 66 likes
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  8. Jul 30

    Now let's put this old marketing picture into context: To completely see a 14m Humpback Whale with a 40° FoV AR headset, you need to be 20m away. A basketball court is 28mx15m.

    3 replies 9 retweets 34 likes
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  9. Jul 30

    Magic Leap reveals official FoV specification: Spoiler alert: It's 40°x30° (called it!) Redditor /u/Ph0t0nFr3ak made an approximate comparison image based on my old HoloLens FoV pic:

    4 replies 68 retweets 114 likes
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  10. Jul 29

    Paper 2: A Visual Survey of Global Slab Geometries With ShowEarthModel and Implications for a Three‐Dimensional Subduction Paradigm

    1 retweet 3 likes
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  11. Jul 29

    Paper 1: Surface Slip From the 2014 South Napa Earthquake Measured With Structure From Motion and 3‐D Virtual Reality

    2 retweets 4 likes
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  12. Jul 29

    We recently published two papers about Virtual Reality visualization / scientific data analysis. In the first, VR is used to collect measurements from raw 3D data; in the second, VR is used to visualize complex 3D structures.

    1 reply 2 retweets 17 likes
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  13. Retweeted
    Jul 26

    It's summer and we are having fun with the summer enrichment programs across Alaska. This morning Tania in Fairbanks is sharing geoscience concepts to 3rd and 4th graders and their teachers using an AR sandbox developed by

    1 reply 5 retweets 13 likes
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  14. May 17

    Whew. and are back up again after the annual A/C failure in our server room.

    7 likes
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  15. Retweeted
    May 16

    I'm happy to announce that we've officially launched simultaneously for both Mac and iPad.

    1 reply 7 retweets 8 likes
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  16. May 17

    Tonight at the SVVR Meet-up: PS4VR + Star Wars: Battlefront – Rogue One: X-Wing VR Mission + 's motion rig = Good Times.

    3 replies 10 retweets 56 likes
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  17. May 7

    I finally sat down and crunched these numbers (or, rather, my poor CPU Monte-Carloed them): Vive total FoV: 2.743 sr (or 0.873π sr) Rift per-eye FoV: 1.866 sr (or 0.594π sr) Rift total FoV: 2.044 sr (or 0.651π sr) Vive per-eye will take a bit longer. Odd shape.

    2 replies 10 likes
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  18. May 7

    Resolution, sampling factors, and field of view, based on rendering parameters, now with a comparison between HTC Vive and Oculus Rift:

    4 replies 20 retweets 49 likes
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  19. May 4

    I just received this photo from our VR exhibit at the San Francisco Exploratorium last year. Showing a visualization of a methane cloud over southern CA. Photo by , data by Ian Faloona.

    6 likes
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  20. Apr 30

    Interesting article about learning, featuring an AR Sandbox:

    1 reply 2 retweets 5 likes
    Undo

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