3-D eye strain/headache concern (medical article)

Originally Posted by Jim in Seattle

A very interesting article comparing 3-D in a movie theater situ VS a screen a few feet away from a viewer and how the brain interprets what the eyes see. (Thanks to HighDefJeff (WOW VISION) for sharing the link with me)
Jim

http://www.eetimes.com/showArticle.j...762&cid=NL_eet

Originally Posted by quickfire

I watched AVATAR in 3-D........and after about 30 minutes had a splitting headache and felt woozy headed!!

Maybe Im the only one that felt like this,but if lets say 10 to 15% of people who buy a 3-D tv have the symtoms....that will create problems for the industry!!!!

Those techniques typically create a sensation of depth behind the screen, not in front of it, said Chinnock and others. Thus they may create visible artifacts users may find crude but not contribute as dramatically to the convergence-accommodation conflict as effects that create depth in front of the screen.

Originally Posted by GregLee

The 3D TVs should have a user control to change the horizontal divergence of the left and right images, so people could push the images behind the screen if they start to get a headache.

Originally Posted by HokeySmoke

This could potentially be done for games, but not for movies. The 3D environment for games is created on the fly and therefore the eye distance can be adjusted. 3D movies, however, will be mastered on Blu-ray using two discrete views that cannot be altered in point-of-view.

Among the more interesting Technicolor 3D technologies displayed was one that will allow 3D HDTV owners to control the left- and right-eye depth of their 3D images. In addition to controls for volume, brightness and contrast, consumers could some day have a depth option as well

Originally Posted by HokeySmoke

The key here is "some day". It's not going to happen in the near future and may require a different way of encoding the content in the first place. The reason the two-view encoding was chosen is that it's the most compression friendly right now. Someday, maybe 2D plus depth could be encoded, then it would be easy to turn the depth up and down.

Originally Posted by HokeySmoke

This could potentially be done for games, but not for movies. The 3D environment for games is created on the fly and therefore the eye distance can be adjusted. 3D movies, however, will be mastered on Blu-ray using two discrete views that cannot be altered in point-of-view.