Author Topic: Channel 4 3D week. (Read 19422 times)

Stonemonkey · « **on:** November 10, 2009 »

http://www2.sainsburys.co.uk/instoreoffers/free_3d_glasses.htm

I don't think they're showing much that's new but could be interesting.

Shockwave · « **Reply #1 on:** November 10, 2009 »

Might be worth just grabbing the free glasses from Sainsburys and using them to make something on the 'puter that needs them

Stonemonkey · « **Reply #2 on:** November 11, 2009 »

Quote from: Shockwave on November 10, 2009

Might be worth just grabbing the free glasses from Sainsburys and using them to make something on the 'puter that needs them

My thinking too, the colours they've used don't seem to be the best choice but they work. I'm trying to get my head around how it all works now.

Shockwave · « **Reply #3 on:** November 11, 2009 »

As I understand it the different coloured lenses filter out colours so you can present the left and right eye with slightly different images at the same time and therefore two views of the same scene at once that combine to produce a 3D looking image.

Stonemonkey · « **Reply #4 on:** November 11, 2009 »

Quote from: Shockwave on November 11, 2009

As I understand it the different coloured lenses filter out colours so you can present the left and right eye with slightly different images at the same time and therefore two views of the same scene at once that combine to produce a 3D looking image.

You know me better than that. I'm thinking of a wierd way things'll have to be drawn, I don't even think the movies have it right.

Shockwave · « **Reply #5 on:** November 11, 2009 »

You may find this interesting, don't know if you have seen it before..

http://www.pouet.net/prod.php?which=8367

Stonemonkey · « **Reply #6 on:** November 11, 2009 »

Quote from: Shockwave on November 11, 2009

You may find this interesting, don't know if you have seen it before..

http://www.pouet.net/prod.php?which=8367

Thanks, I've had a look around and there's not that many on pouet, i've only found 2 or 3 and I'm a bit surprised at that.

Stonemonkey · « **Reply #7 on:** November 11, 2009 »

If you get these glasses, check out these images.

http://www.colorcode3d.com/gallery/cc3dgal/index.htm

I might be wrong about the colour choice, these work really well.

Jim · « **Reply #8 on:** November 11, 2009 »

At the movies they don't use coloured lenses any more, they use polarised lenses. Alternate frames are projected through a pair of polaroids with the polarisation at 90degrees to one another. Your specs also have the same polarisations, one over each eye. The combination effectively blacks out each eye for every other frame giving the 3d effect.
I saw Monsters v Aliens in 3d using this technique - it was pretty good.
Obviously you can't get this effect on a standard telly.
Jim

Stonemonkey · « **Reply #9 on:** November 11, 2009 »

Quote from: Jim on November 11, 2009

At the movies they don't use coloured lenses any more, they use polarised lenses. Alternate frames are projected through a pair of polaroids with the polarisation at 90degrees to one another. Your specs also have the same polarisations, one over each eye. The combination effectively blacks out each eye for every other frame giving the 3d effect.
I saw Monsters v Aliens in 3d using this technique - it was pretty good.
Obviously you can't get this effect on a standard telly.
Jim

Yep, the thing I was meaning about the movies is something to do with the geometry that I have in my head and can't see it being done with 2 cameras, I saw My Bloody Valentine and it mostly looked pretty good but there's something to do with the way eyes work that I can't quite figure out.

These glasses for ch4, although using different coloured lenses they seem to work a bit differently from the blue/red or blue/green lenses and seem to give much better, almost complete colour.

3D ready Polarized TVs are on the way (some already maybe), as are TVs compatible with shutter glasses. I'm waiting to find out what Sony and others are up to wrt PS3 and blu-rays before getting a new TV, Sony have been showing off 3D TVs and they claim that all (most?) current PS3 games can be made to run in 3D with just a system update.

Shockwave · « **Reply #10 on:** November 11, 2009 »

I picked up a couple of pairs of those glasses, they are rather good. one lense is a kind of brown colour, the other is lilac.

Those 3D pictures you posted looked pretty good in them.

Jim · « **Reply #11 on:** November 12, 2009 »

->Fryer - part of the problem is that instead of 24fps going to both eyes, we get 12fps going to each eye which isn't quite enough. The same problem will happen with TVs unless somehow they manage to cram in double the number of frames per second.

Jim

Clyde · « **Reply #12 on:** November 12, 2009 »

im getting my pairs today, hopefully they havent run out.
Those image links, look a bit like a spin on a colour map used in bump mapping.

combatking0 · « **Reply #13 on:** November 12, 2009 »

If they have run out, go and buy a box of Roses or Quality Streets, find a see-through red wrapper and a see-through green wrapper, then cut out two pairs of glasses shapes from the box. Sandwich the wrappers between the shapes in place of the lenses, and bingo - 3D glasses and some chocolates to eat while you watch 3D week.

Jim · « **Reply #14 on:** November 12, 2009 »

You could also experiment with Werthers Originals and Parma Violets.

Jim

Stonemonkey · « **Reply #15 on:** November 12, 2009 »

jim, with the polarising system the images are overlaid simultaneously giving full framerate to each eye, in the cinemas this needs 2 projectors. in the TVs as far as I know the polarisation is altenated for each pixel so you might only get 1/2 resolution for each eye but still full framerate. the system with shutterglasses is to work on a much higher frequency (200Hz) than the framrate so there shouldn't be any problem there either.

CK, the colours chosen for this are:

left. amber (lets everything except blue through)

right. blue (only lets blue through)

Yaloopy · « **Reply #16 on:** November 13, 2009 »

This is a good idea, pity we can't get the glasses here. Did anybody watch the 3D Toy Stories yet?

Clyde · « **Reply #17 on:** November 13, 2009 »

I was going to then I found out it wasnt a new Toy Story episode.
But I did go and see UP! and that was very good.

Thats a shame about not able to get the c4 glasses.

< edit > with regards to c4 glasses, not the explodable kind

combatking0 · « **Reply #18 on:** November 13, 2009 »

Looks like the colour choice for C4 is to avoid problems with red/green colour blindness.

The 3D Toy Story re-releases (and probable re-releases of all other Pixar works in 3D) look interesting, but I'll wait for home cinema technology to become affordable before I watch them all in 3D. I'll certainly go and see Monsters Inc and Wall-E if they are re-released.

Stonemonkey · « **Reply #19 on:** November 13, 2009 »

Quote from: combatking0 on November 13, 2009

Looks like the colour choice for C4 is to avoid problems with red/green colour blindness.

It works a slightly different way in fooling the brain and lets you see in almost full colour. Definitely the best I've seen from the coloured glasses.