Re: Broadcast SL3D

[P3D Larry Berlin <lberlin@xxxxxxxxx>]

>Date: Mon, 26 May 1997 
>From: P3D John W Roberts comments:
>........................
>Thought experiment - if you use sequential-field SL3D to display a collection 
>of white squares, sides vertical with respect to the screen, some far away and
>some much closer to the lens, with a black background, and the depth/aperture
>adjusted so that with shutter glasses you can perceive the distances of the
>squares more or less accurately, then if you try to view the screen *without*
>the shutter glasses,................
>
>................ In other words, sequential field SL3D video may be great for
>people who have the receiving equipment, but I'm still skeptical of the 
>ability to broadcast it over the airwaves and expect nobody to notice. :-)
>

For a great example of viewing interlaced 3D image information (without the
glasses) visit the Stereography Magazine Website. Remember that on your
computer screen this displacement of stereo information is perhaps a
stronger effect than on a TV. Step back a few feet to simulate your TV
somewhat. It is noticeable. 

http://www.stereography.com/gravenimages

The closer to flat the image is, the less noticeable the image displacement
becomes. If your reason for wanting 3D is at least partially for it's depth
effect, using a flat form of 3d isn't quite the answer.

While watching a 3D video tape recently, a person walked in the room who
didn't know what was happening. They immediately asked, *what's wrong with
that channel?* I don't suppose that's a desirable response from the public
on anyone's part if 3D is to be accepted and used.

Has anyone on this list tried the system which creates a stereo image from
motion parallax in a video stream? It's a 2D source image so it would appear
normal to anyone who didn't have the special 3D viewing equipment. My
expectation is that it would work well slightly more often than Pulfrich
glasses.

Larry Berlin

Email: lberlin@xxxxxxxxx
http://www.sonic.net/~lberlin/
http://3dzine.simplenet.com/


------------------------------