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Retina display hack.

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Re: Retina display hack.

Postby 320x200 » Wed May 01, 2013 1:46 pm

I wonder how accurately the eye position needs to be measured to offer practical benefits. Certainly the lag on current smartphone touchscreen solutions is pretty hefty. Hopefully this stems just from having to work out a precise point given an imprecise blobby finger.
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Re: Retina display hack.

Postby ChrisByatt » Wed May 01, 2013 2:01 pm

I've used the smart stay thing on the GSIII and it's a good few seconds before the camera recognizes you're actually looking away..

nihilian wrote:I think you're right that it wouldn't work currently, but there is nothing in principle that stops us from making it work.

http://bits.blogs.nytimes.com/2013/02/27/scientists-uncover-invisible-motion-in-video/

I've heard Carmack commented on the issue of sensors and algorithms saying that in some cases the sensors we have are already good enough and it takes a clever algorithm to sift through the noise, or something along those lines.

So if a screen can detect finger motion, then eyeball motion is just a quantitative jump away, not a qualitative one.
Then again maybe it's easier to use an optical system like the above video, I can't say which solution is more likely, but I think it'll definitely be feasible very soon.


This is cool, but everything we're looking at is in early development :(. And it's kind of off topic for hacking in a better/multiple displays haha.

I wonder if anyone from oculus could give us any tips - if they've thought about it or not?
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Re: Retina display hack.

Postby nihilian » Wed May 01, 2013 2:05 pm

Yeah, there are a lot of really cool cutting edge technologies that need to mature and be integrated, but I have to say even without all that stuff simply a better screen will already be very immersive, but it's fun to speculate!

Palmer strikes me as a mad scientist type who probably has tons of stuff going on in "the lab" and even more in his head. It'd be cool if he started a regular podcast or something talking about potential ways to develop VR.
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Re: Retina display hack.

Postby ChrisByatt » Wed May 01, 2013 2:15 pm

nihilian wrote:Yeah, there are a lot of really cool cutting edge technologies that need to mature and be integrated, but I have to say even without all that stuff simply a better screen will already be very immersive, but it's fun to speculate!

Palmer strikes me as a mad scientist type who probably has tons of stuff going on in "the lab" and even more in his head. It'd be cool if he started a regular podcast or something talking about potential ways to develop VR.


I'd love for him to join this thread and tell us how to hack some mental stuff together!! haha
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Re: Retina display hack.

Postby Cgpnz » Wed May 01, 2013 3:57 pm

Once I get hardware (ie a PC with gtx 670 this weekend) I'll look into
the dll source to see where to change the code for a single monoscopic view
that fills a rotated screen, moved back double the eye-to-panel distance.
I will construct and paper-based enclosure to see how it wears (once I get rift in 2 months).
I hope the image warping fov cone stays the same, no need to fiddle with the lenses.

So then with this 'one eyed git' hack we will see directly 4x smaller pixels at same latency.

As I've said before this hardware for a 4x pixel density (panel + video box) stereoscopic
viewing experience is already at the factory and could be packaged as an add-on this month,
if oculus thinks this might work, and is willing to let hackers play down a different route.
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Re: Retina display hack.

Postby ChrisByatt » Thu May 02, 2013 6:02 am

Cgpnz wrote:Once I get hardware (ie a PC with gtx 670 this weekend) I'll look into
the dll source to see where to change the code for a single monoscopic view
that fills a rotated screen, moved back double the eye-to-panel distance.
I will construct and paper-based enclosure to see how it wears (once I get rift in 2 months).
I hope the image warping fov cone stays the same, no need to fiddle with the lenses.

So then with this 'one eyed git' hack we will see directly 4x smaller pixels at same latency.

As I've said before this hardware for a 4x pixel density (panel + video box) stereoscopic
viewing experience is already at the factory and could be packaged as an add-on this month,
if oculus thinks this might work, and is willing to let hackers play down a different route.

Please keep us updated on this!

I'm not sure if there's enough space to have the displays rotated though - it seems you'd be wasting a lot of space at the top or the bottom right? (of the display that is)
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Re: Retina display hack.

Postby edpsx » Wed May 08, 2013 11:16 am

5.7" 1080p. Looks like a good candidate to me! Need some specs tho.

http://blog.gsmarena.com/vivo-play-phablet-packs-5-7-1080p-screen-snapdragon-600-chipset-and-13mp-sony-camera-
coming-in-late-may/
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Re: Retina display hack.

Postby davew2040 » Wed May 08, 2013 7:12 pm

If it were possible to eliminate the screen-door effect by using a 4k screen, then I'd think you could easily just map a 1080p pixel array into a 4k pixel array without doing the rendering at a 4k resolution. The resolution isn't great now for sure, but the screen door is a bigger issue in my opinion.
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Re: Retina display hack.

Postby Wookiee » Wed May 08, 2013 8:01 pm

Ok just got my screen (the ipad 3/4 one) and connector... holy crudmuffin this is going to be the most fiddly solder job I have ever done.
Glad I got two connectors as this thing is going to be a pain, why can we not get a through hole version of this. :D

Any way I will get to this over the weekend time permitting and (assuming I can get it all up and running without stuffing it up) hopefully have some feedback as to whether or not this is something worthwhile for the time+effort.

Wish me luck.


Scratch that last bit just found this. http://dp2retina.rozsnyo.com/ it costs more than the screen itself, but time and money saved on all the connectors and aspirin for the soldering job... it's worth it.

Oh well may not have feedback this weekend then, but will definitely have something to talk about in 2 more weeks.
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Re: Retina display hack.

Postby ChrisByatt » Thu May 09, 2013 2:54 am

There's some stuff here about using an iPad screen http://www.mtbs3d.com/phpBB/viewtopic.php?f=140&t=17284
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Re: Retina display hack.

Postby ChrisByatt » Wed May 15, 2013 2:18 am

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Re: Retina display hack.

Postby nellus » Wed May 15, 2013 5:21 am

sorry for the question that is probably stupid.....
I just have to get a new display and connect all'oculus? any other operation?
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Re: Retina display hack.

Postby magnetmannen » Wed May 15, 2013 5:36 am

If you place two mirrors at a 90% angle right at the bridge of the nose, you can use two screens , one to the left and one to the right.
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Re: Retina display hack.

Postby geekmaster » Wed May 15, 2013 6:29 am

magnetmannen wrote:If you place two mirrors at a 90% angle right at the bridge of the nose, you can use two screens , one to the left and one to the right.

Like this (except smaller):
http://www.mtbs3d.com/phpBB/viewtopic.php?f=140&t=16759&p=109890#p109890

I actually purchase three of these ipad3 panels just for that purpose, so I can use one SBS (like the Rift DK) except using my fresnel lens stacks to "anamorphically" stretch the portrait-mode image half into landscape mode so as to not waste so many vertical pixels (but which would require custom pre-warp).

The other two retina LCD panels were purchase to use just such a (minitiarized) version of the mirror and panel arrangement as shown at the above link. I have front-surface mirrors just for this purpose, but they need to be cut down. For my initial experiments I will use dental mirrors.

I plan to mount the displays facing each other, just forward of my ears enough so that my cheekbones do not obscure part of the display.

My holdup is getting round to making PCBs onto which I can mount those tiny display connectors.
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Re: Retina display hack.

Postby edpsx » Thu May 30, 2013 2:05 pm

http://www.engadget.com/2013/05/30/htc-t6-rumor/

Another contender.

Any results with your ipad screens geekmaster?
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Re: Retina display hack.

Postby geekmaster » Thu May 30, 2013 2:57 pm

edpsx wrote:http://www.engadget.com/2013/05/30/htc-t6-rumor/

Another contender.

Any results with your ipad screens geekmaster?

Still waiting for making PCBs to work its way to the top of my "To Do" list... Sometimes it acts more like a push-down stack than a FIFO queue though...
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Re: Retina display hack.

Postby WadeWatts » Fri Jun 14, 2013 2:20 pm

I just got the Rozsny board that will drive the iPad 3 Display via a display port connector. It is amazing how small the board is.... Like 4 inches by 2 inches. And the display is also pretty light weight. The Rozsny board has the Molex Micro power input on it. Anyone who has this same board setup know what the power source should look like?

That is the only thing missing. I am also looking at Optics right now. I built one Rift clone already using a 1280x800 display with the LEEP style lens. Works pretty darn well.

Now I am itching to turn this iPad display and board combo into a high-res DIY Rift to match the consumer version shown at E3. If anyone wants to brainstorm just let me know.

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Re: Retina display hack.

Postby ishist » Fri Jun 14, 2013 3:43 pm

Is there a reason that this isn't an appropriate upgrade?

http://www.ebay.com/itm/OEM-HTC-Droid-DNA-ADR6435-Original-LCD-Screen-Display-Repair-Replacement-Parts-/350711245261

From what I've seen, if it can be believed, this panel would be a Huge improvement over the current.

ex. http://img.gawkerassets.com/img/1857i3qqmbs8xjpg/ku-xlarge.jpg
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Re: Retina display hack.

Postby Inscothen » Fri Jun 14, 2013 5:01 pm



You would see roughly 45% of any 7" through the lenses(around 515,000 pixels per eye) because of the lenses. The DevKit gets around 230,000 pixels per eye with A cups at a comfortable distance. If the cost was low enough and easy to put together, that be a great choice.

...but if the cost and ease was comparable to a 5.5"-6" 1080 panel, it would be much better. A 5.5" 1080 panel would get somewhere around 700,000 pixels per eye. 3x the amount of the Devkit.

ishist wrote:Is there a reason that this isn't an appropriate upgrade?

http://www.ebay.com/itm/OEM-HTC-Droid-DNA-ADR6435-Original-LCD-Screen-Display-Repair-Replacement-Parts-/350711245261

From what I've seen, if it can be believed, this panel would be a Huge improvement over the current.

ex. http://img.gawkerassets.com/img/1857i3qqmbs8xjpg/ku-xlarge.jpg


I was thinking that might be the same display that Oculus put in their new prototype. rfurlan from mtbs3d wanted to use that in a DIY or a mod back in april, but it's a MIPI panel. You'd have to buy or build a new controller from scratch. You'd also be able to see the sides of the panel but it'd be it'd be over 700,000 pixels per eye visible :o
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Re: Retina display hack.

Postby rozsnyo » Sat Jun 15, 2013 9:31 am

Hi Guys, I am glad that you try to use my adapter that way. Actually we will be working on integrating a phone LCD into our UHD camera, so as a by-product, we could make HDMI to MIPI interface, to drive a 5 - 5.5" LCD in native resolution.

Would that 5" HTC DNA be okay? I assume that every display will have a different plug, so we have to use a very common one to have them for lower price.. if you decide which one to use, drop me an email to daniel@rozsnyo.com, thanks.
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