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Poor Man's 3D TV Glasses — Parallax Forums

Poor Man's 3D TV Glasses

ercoerco Posts: 20,260
edited 2010-10-05 19:36 in General Discussion
I chuckled when I saw these on Ebay: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=280487111494&_trksid=p2759.l1259

A friend of mine emailed me this:

"Actually, there may be some merit to it. There is a 3d technology/discovery where the different brightness seen by each eye will elicit a 3d effect when viewing an object moving from left to right (or vice versa). This is what's called the pulfrich effect. This may be what these glasses rely on as you watch a movie. Look at the hole pattern on the glasses. When you look left or right, one eye will see through more holes than the other.

here's more info on the pulfrich effect:
http://en.wikipedia.org/wiki/Pulfrich_effect

I'll bet these glasses will work, but the 3Dness will come in and out while watching the movie."

Comments

  • LeonLeon Posts: 7,620
    edited 2010-09-30 10:13
    Some years ago a different effect was used in an episode of the BBC1 TV Eastenders soap, produced in conjunction with the Tomorrow's World programme, to give a 3D effect. No special glasses were required, and it was quite effective. I think the actors moved and the camera was stationary, giving an illusion of depth, but I'm not certain.
  • ercoerco Posts: 20,260
    edited 2010-09-30 10:43
    Doesn't surprise me that the BBC has 3D TV. In the UK, everything's more 3D, even the town names!

    Stratford upon Avon
    Newcastle under Lyme
    Stow on the Wold
    Newbiggin-by-the-Sea

    and my favorite, Chipping Sodbury! :)
  • LeonLeon Posts: 7,620
    edited 2010-09-30 10:47
    Have you seen where I live? St. Leonards isn't actually on the sea, of course. :)
  • skylightskylight Posts: 1,915
    edited 2010-09-30 14:19
    I remember the xray glasses as a kid that had a feather wedged between cardboard that gave the illusion of people with no clothes on :smilewinkgrin:
  • Martin_HMartin_H Posts: 4,051
    edited 2010-09-30 16:42
    Well I live in New England so we must be in polarized 3D while England is anaglyph 3D.
  • HumanoidoHumanoido Posts: 5,770
    edited 2010-10-04 03:49
    SONY now makes a true 3D TV that requires no glasses. I watched one on demo at the EXPO SONY building. It has a wide FOV, is available in big screen sizes and should be coming onto the market shortly.
  • LeonLeon Posts: 7,620
    edited 2010-10-04 04:10
    I was just reading about it in the New York Times on-line edition. The field of view is rather narrow - 40 degrees.
  • HumanoidoHumanoido Posts: 5,770
    edited 2010-10-04 05:03
    Leon wrote: »
    I was just reading about it in the New York Times on-line edition. The field of view is rather narrow - 40 degrees.
    You could certainly sit or stand off to the side (which I did) and watch this TV and see very good impressive 3D. There is nothing narrow about the field of vision in the demo TV that I viewed. I just found out the TV is already being marketed in Asia. Should be good initially for watching specially prepared movies on special players, another product I'm sure SONY will sell. This paves the way for the next step, surround 3D.
  • skylightskylight Posts: 1,915
    edited 2010-10-04 06:56
    Don't understand how those tv's work without glasses?
    The tv's with the glasses i understand as they allow the offset images to each eye through polarisation and the brain puts together a 3D image from it but how does the glassless tv work when both your eyes are seeing the same image
    the brain has no offset image to work with.
    Is it a kind of psuedo 3D and not true 3D have seen the ones where the image is panned to look like 3D but it's not as impressive as the true 3D ones.
  • LeonLeon Posts: 7,620
    edited 2010-10-04 07:28
    See the NYT article:

    http://www.nytimes.com/2010/10/05/technology/05toshiba.html?hpw

    It mentions the 40 degree limitation, BTW.
  • skylightskylight Posts: 1,915
    edited 2010-10-04 11:38
    Thanks Leon, The article suggests that the images will be angled to each individual eye using a sheet placed in front of the screen, I wonder if you will need to sit dead centre to gain best effect, also your eyes are not that far apart so the angles mentioned must be very acute to hit one eye or other. Or will you need to sit very close to the screen?
  • LeonLeon Posts: 7,620
    edited 2010-10-04 11:55
    The "sweet spot" viewing angle is 40 degrees, as I said. They will obviously be trying to improve it.
  • hover1hover1 Posts: 1,929
    edited 2010-10-04 12:34
    I wonder if the "sheet" is a lenticular variety, such as used in the Nimslo 3D 35mm camera?

    http://en.wikipedia.org/wiki/Nimslo

    I built two of the 13 or so printers during their 2 year heyday. Fairly good 3D representation, but it took a little bit of knowledge for composition of the shot. Cameras where ~$70.00US, printers cost $150,000.00US.

    I would like to see what it takes to capture video in this format, or is it generated digitally from raw video?

    Jim
  • LeonLeon Posts: 7,620
    edited 2010-10-04 12:48
    It uses a standard signal; the 3D effect (nine images from a single frame) is generated with software using a Cell processor.
  • hover1hover1 Posts: 1,929
    edited 2010-10-04 12:57
    Thanks Leon,

    Interesting read:

    http://en.wikipedia.org/wiki/Cell_(microprocessor)

    I've lost a few years of keeping up with all video formats due to complete job change. I don't even have a digital box for my TV! Hence no TV right now. I learned to live without. Get more work done that way.

    I used be be the guy with all the new gadgets.

    Jim
  • ercoerco Posts: 20,260
    edited 2010-10-04 13:17
    I've seen several news reports that the latest crop of 3D tvs give a lot of people headaches.
  • Martin_HMartin_H Posts: 4,051
    edited 2010-10-04 16:37
    I bought a Nimslo camera back in the 1980's when they were going bankrupt for about $50 from a liquidator. It is a really well made camera and it is to bad they never went anywhere.

    I was never interested in having the lenticular prints made, but I did make pairs of black and white images to reproduce the old time stereoscopic prints. It worked well for that, but wasted a frame of film when used for that purpose.
  • ercoerco Posts: 20,260
    edited 2010-10-05 10:05
    Toshiba's New 3D TV flavor of the day:
    http://www.cnn.com/2010/TECH/innovation/10/05/toshiba.3dtv.no.glasses.cnet/index.html?hpt=T2
  • HumanoidoHumanoido Posts: 5,770
    edited 2010-10-05 18:45
    Lots of vendors have already entered the 3D TV market. I doubt many of their TVs will be as good as SONY. Right now the retail dealers are showing ultra HDTV with the sharpest most stunning res I've ever seen on a TV.

    http://www.google.com/search?hl=en&source=hp&biw=991&bih=631&q=3d+tv&aq=f&aqi=&aql=&oq=&gs_rfai=
  • ercoerco Posts: 20,260
    edited 2010-10-05 19:36
    We just watched the new "Journey to the Center of the Earth" on DVD in 3D. About a C movie overall. In one of the more memorable scenes, Brendan Frasier is going through a box of his brother's belongings. Ironically, he can identify everything EXCEPT a stereopticon, an antique 3D photo viewer.
    ashscope.jpg
    360 x 340 - 115K
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