hey, Antonio, that's a really interesting idea! I'd love to see this put into use... Randall (Randy) Arnold Quality Feedback Analyst Nokia-CMO/Dallas >-----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 >impressive. > >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. >IT REQUIRES A LOT OF TRIAL AND ERROR EXPERIMENTATION to find >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. > >-- >Antonio >_______________________________________________ >maemo-users mailing list >maemo-users at maemo.org >https://maemo.org/mailman/listinfo/maemo-users >
