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Hubble In Anaglyph Stereo 3D

rwllama writes "We at the Hubble Space Telescope have quietly released our first anaglyph (i.e. red/cyan) stereo 3D movie of a flight into a Hubble image. This work is a follow-on to the sequences we produced for the 'Hubble 3D' Imax film. Note that the 3D interpretation uses lots of artistic license, so it is not intended to be scientifically accurate. We would love to hear the Slashdot crowd's feedback on whether you want more, are artistic interpretations of scientific data acceptable, is anaglyph 3D too annoying, how many could watch this with a real 3D (e.g., NVIDIA 3D Vision) setup, etc?"

19 of 114 comments (clear)

  1. First new word I leaned today by Chrisq · · Score: 2, Funny

    First new word I leaned today: Anaglyph

    1. Re:First new word I leaned today by Chrisq · · Score: 3, Funny

      I thought it was Analglyph at first

      Would that be a tatoo on your arse designed to be viewed with 3d glasses?

      It could open up some interesting lines: "Hey babe, if you like 3d movies I've got something to show you!" or "now your here would you like to come upstairs and take a look at my anaglyph?"

  2. Color Blind by Lord+Byron+II · · Score: 5, Informative

    From TFA:

    "Q: I am color blind. Can I see the stereo 3-D movies?

    A: Unfortunately, no. The anaglyph stereo 3-D technique relies on colors to separate the left and right eye images. If one can not see or distinguish between certain colors, then the anaglyph stereo 3-D effect will not work."

    That's incorrect. The color of the image and the color of the lens is used to direct a false colored monochrome image to each eye. That is, the left eye receives a blue tinted monochrome image and the right eye receives a red tinted monochrome image (or vice-versa).

    For someone who is color blind and can't differentiate red and blue, then they will perceive the color arriving at each eye to be the same. For them, the 3D effect will be even better.

    1. Re:Color Blind by camperdave · · Score: 2, Informative

      It depends on the type of color blindness. The red and cyan filters produce a black and red, and a black and cyan image respectively. If you can't distinguish reds, then the left eye receives a field of black. You'd get as much 3D as a person with a patch over their eye: None.

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    2. Re:Color Blind by clone53421 · · Score: 2, Informative

      If you can’t see reds, then the left eye receives a field of (apparently) black. If you can’t distinguish reds (from greens, i.e. red/green colorblindness), the left eye receives what could (apparently) be either red or green, but it should at least be able to see it.

      --
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    3. Re:Color Blind by imakemusic · · Score: 3, Insightful

      what i'm really hearing is that the next Hubble should be a binocular telescope.

      I'm guessing here - but I'm sure someone could do some calculations to back me up... I don't think that would work. To get a decent stereo effect the two lenses would have to be some distance apart. I have two eyes but I can't tell the difference between the distance to the moon and the distance to the sun and that's quite some difference. In fact the whole sky could be one flat image as far as my eyes can tell.

      The summary says that they've used a lot of artistic license. I am guessing this means they have exaggerated the difference between what each eye sees based on the known distance of the object. Either that or they've used one image from one point in Hubble's orbit and one image from the opposite point.

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    4. Re:Color Blind by sirrunsalot · · Score: 2, Informative

      I'm guessing here - but I'm sure someone could do some calculations to back me up... I don't think that would work. To get a decent stereo effect the two lenses would have to be some distance apart.

      If they're two AU's apart and you look in the right direction, then you have a the idea of a parsec.

      If someone will do the calculations? Okay, I'll bite.

      I'll put this in terms of human vision since we're all familiar with that (probably). If your eyes are 2.5 inches apart, then a parallax of an arc second corresponds to an object about 6.5 km away. The Carina nebula is in the neighborhood of 8000 ly away, which is around 2500 pc. Since everything's a nice small angle, that means this nebula is to Earth's orbit what an object 6.5*2500 = 16250 km away is to your eyes. That's about a third of the way to geosynchronous orbit. 80% of people can distinguish depth of objects with a horizontal disparity of about 30 arc seconds. This is about 30*2500 = 75000 times beyond the limits of human depth perception. (I think I'm off by a factor of two here for angles vs. half-angles, but you get the idea.) Even if it's possible to distinguish an approximate depth to an astronomical object using parallax, there's really no chance of distinguishing depth within the object.

    5. Re:Color Blind by Hillbert · · Score: 2, Informative

      The red-green test (binocular balancing) does work on anomalous trichromats, i.e. most of the people who are colourblind or colour deficient. Just because you can't distinguish between red and green doesn't change the way the wavelengths focus. (We have to adjust our questions to refer to the right or left side, rather than the red or green, but that's about it.)
      Very few people are missing a particular colour of cones; rather, the light-sensitive pigment is altered by genetics to be most sensitive to a different/"wrong" wavelength. So your red-green colour deficient people usually have their 'green' cones more sensitive to red instead of green (or vice versa). That doesn't mean that they don't see green, they're just less sensitive to it than they are to red; the photopigments are still activated by wavelengths other than the one they're most sensitive to.
      For more info, look up the spectral sensitivity functions for the various photopigments; you can imagine how shifting the sensitivity of any of the curves will affect things, but it will in no way prevent normal colours from being visible.
      (I'm an optometrist. And yes, it's spelled "colour" here.)

  3. Moar Hubble by Pojut · · Score: 2, Insightful

    I don't care if it's made to be poop color...there are never enough images from the Hubble. Anything they are willing to present is good in my book!

  4. Re:Youtube it please by rwllama · · Score: 2, Informative

    The 2D version of the movie is available as well: http://hubblesite.org/newscenter/archive/releases/2010/29/video/a/

  5. Small parallax problem? by Gruturo · · Score: 4, Interesting

    Given that, outside the solar system, there's hardly anything closer than a couple parsecs except for some very faint objects, and 1 parsec is 1 parallax *second* (as in, 1/3600th of a degree), and it represents the angle formed by watching the same object from 2 observation points spaced 1AU (or 2AU?) apart, does this allow any actual 3d effect to be perceived by the brain? The left/right image separation should be insufficient (unless of course the content has been heavily software processed).

    Also, please, don't release anaglyphs, there's a lot of different video hardware to enable 3d vision. Just release video with the left/right frames (side-by-side, above/below, alternating, you choose) and let each of us view it optimally on our hardware. There's plenty of software to accomplish that, even java applets and browser plugins.

    --

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    1. Re:Small parallax problem? by rwllama · · Score: 4, Interesting
      Yes, of course the camera separation is much wider than human eye separation. The camera motion is also probably faster than the speed of light. As you correctly infer, scientifically accurate visualizations of what the human eye would see moving at currently achievable speeds would look no different than the original Hubble image. What would be the point in releasing such a visualization?

      Thank you for your comments on 3D formats. We did not feel that enough of the public has 3D hardware today, but a reasonable number might have anaglyph glasses. If we do future projects, we will increase the formats as appropriate.

  6. If this were posted to photo.net... by Lev13than · · Score: 4, Funny

    Ouch - this is the best that Hubble can do? The images show serious chromatic aberrations, with significant red-blue fringing on edges. What's worse is that the effect gets more pronounced as the camera moves around. They should really consider ditching the point-and-shoot and movie up to an SLR with a decent carl-zeiss lens if they want to be taken seriously.

    --
    When you have nothing left to burn you must set yourself on fire
  7. Re:Time for a nice quiet Slashdot effect ;-) by rwllama · · Score: 2, Interesting

    Yes, that line in the post was intentionally ironic. We did not trumpet the 3D in the press release for the general public, but if the post made it to slashdot we would be loud to the tech savvy audience who could give us the best feedback.

  8. To Answer The Actual Question... by darien.train · · Score: 2, Interesting

    If you design the experience properly you don't have to choose between an artistic and scientifically accurate rendering of the Hubble material. You can first show the artistic version and then add a scientific overlay with a basic set of data (what you're looking at, distance from earth, chemical makeup, etc). You can then transition into the wonky scientific version for a final pan across the subject matter so that you're representing the needs of multiple viewers. A decent 3D Info-graphics template can look really cool and add some production value without breaking your budget as well.

    If I someone at Hubble was actually interested I'd be willing to donate some time in making a storyboard that illustrates the concept.

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  9. Re:Not annoying at all by rwllama · · Score: 3, Informative

    The visualization does uses separate left and right cameras. However, I forgot to mention in the posting that the "3D" is mostly "2.5D". We have no information about what the backside of the nebula looks like, so we could only do full 3D modeling if we artistically created volumes and pixels that Hubble does not observe. We did some of that for the "Hubble 3D" film, but did not invest such time on this project. We did sculpt the front side of the clouds in the nebula into landscapes, but the camera path stays mostly in front, so the sculpting is not that obvious. We are testing to see how much effort is required to get "enough" immersion.

  10. Re:Parallel view 3D please! by Kiaser+Zohsay · · Score: 2, Interesting

    Cool! But parallel viewing works just fine, too. How 'bout a version in that?

    I have always preferred cross-eyed free-viewing. I can't cross my eyes outward, so I can only use parallel for images smaller than my ocular distance. Anyone who has never tried either one should look into it.

    --
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  11. Re:I am color blind. Can I see the stereo 3-D movi by comic-not · · Score: 2, Insightful

    I am color blind, lacking the ability to see red light. The red-cyan glasses don't work for me because from my point of view the red lens is completely opaque (black) and the cyan lens completely translucent (clear). Thus, you could simulate my experience with the glasses by covering your left eye with your hand and watching the movie with your right eye only. It's not exactly an improvement ...

    --
    Existence usually comes as a surprise (Idem)
  12. Re:Youtube it please by nacturation · · Score: 3, Funny

    FAKE.

    This isn't true 3D, just like the special edition of Nightmare Before Christmas was not true 3D.

    Unfortunately they didn't have the budget to place the cameras 500 light years apart to get a true stereoscopic image of the Large Megallanic Cloud.

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