[maemo-users] Nokia N800 or N770 and very bad eyesight.

From: randall.arnold at nokia.com randall.arnold at nokia.com
Date: Tue May 8 18:12:57 EEST 2007
hey, Antonio, that's a really interesting idea!  I'd love to see this
put into use...

Randall (Randy) Arnold
Quality Feedback Analyst

>-----Original Message-----
>From: maemo-users-bounces at maemo.org 
>[mailto:maemo-users-bounces at maemo.org] On Behalf Of ext Antonio Orlando
>Sent: Tuesday, May 08, 2007 9:59 AM
>To: Maemo users
>Subject: Re: Nokia N800 or N770 and very bad eyesight.
>> This thread just made me realize, the N800/770 could be 
>ideal devices 
>> for stereoscopic viewing.
>Same opinion here, but with a different approach than the one 
>you propose, which requires dangerous efforts to eyes and 
>mind. The 770 and n800, with their high screen resolution, can 
>"easily" be used as *amazing* stereoscopic photo and video 
>displays. Sure, not many movies are made in 3D, but I think 
>it's a matter of time. And besides videos and photos, there 
>are many other applications that could benefit from depth perception.
>I advanced a suggestion to GP2X staff some time ago, and I've 
>already done a bit of experimentation on the 770 on this 
>subject. My "prototype"  
>results are very encouraging. What we need is a sort of 
>"screen cover"  
>perfectly fitting the 770 display with its dimensions, so to 
>avoid every shift on the display.
>This "kind-of-screen-cover" has to be a lenticular (you know, 
>those you can find with potato chips, used to bring 2D 
>animations, zoom or 3D effects). The 770 should be used in 
>"portrait mode" (and the lenticular must of course have the 
>vertical stripes parallel to the symmetry axis of our body), 
>because the LCD is built with r, g, b elements oriented in 
>such a way that, using it in landscape mode, would result in 
>color artifacts.
>The 3D content should be rendered with the "interlace" mode, 
>that is odd lines for one eye and even lines for the other 
>one: the lenticular bends the rays so that one eye can see 
>just odd lines, and the other can see just even ones. This 
>brings a glasses-free true-colour nice-resolution deep image. 
>For moving images (videos) the perceived effect is even more 
>Because of the fact that the lenticular requires high quality 
>and pixel-perfect construction, it's obviuous we can't build 
>them with our knife ;)  Only big companies can afford buying 
>thousands of pieces to lenticular manufacturers, giving their 
>own specifications.
>Apart from this "little" problem, if someone could provide and 
>sell these lenticulars, Nokia or 3rd parties, they sure would 
>be rather cheap (it's just a little transparent plastic 
>rectangle, after all), no more than 10$ (and I think I'm 
>exagerating), but they could really add a new dimension to the 
>device (he he :)
>Of course this approach requires just one person viewing at 
>the screen, and a specific distance of the tablet from the 
>eyes, which are pretty simple requirements to follow for a 
>portable device user (the lenticular can be done in such a way 
>that the distance is reasonable).
>Oh, a quick hack to "experiment" without a lenticular, which I 
>have done:  
>print black vertical lines on a transparent paper, put a 
>transparent plastic rectangle on the tablet display, and put 
>the printed paper on it.  
>the correct size and distances for the lines to print, so I 
>really can't suggest doing this, but when you get it and try 
>to view a well done 3D picture "remapped" with the interlace 
>method described above, you can't avoid obtaining a lot of 
>"WOW" from everyone staring at it.
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>maemo-users at maemo.org

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