issue come up but its being worked on.
Haha… I have done that… Or even talking to a friend and find myself pointing to something while in vr and saying ‘look at that’! Forgetting they can’t see it… Sometime I gotta slap myself… I still do that sometimes…
Eno
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You are only conscious of what you train yourself to see. Your eyes actually see everything, and quite clearly. Don’t get too hung up on this foviated rendering BS. It’s not going to work and blurring areas you aren’t looking directly at is a sure fire way to make people sick. If your subconscious systems use something in your vision to hang it’s orientation on and then it becomes blurred, you’re going to hurl.
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https://onlinelibrary.wiley.com/doi/full/10.1002/jsid.658
Read this, it talks all about how to use ultra high res screens with foveated rendering, and getting the final frames to the displays. It’s a really great read.
edit: Here are some excerpts.
“We built a 4.3′′ 1443 ppi OLED‐on‐glass display with a pixel format of 3840 × 4800, a pixel pitch of 17.6 µm, and a FoV appropriate for an immersive HMD computing system. When integrated with a high performance optical system with, for example, a 40 mm focal length, the resulting image spans approximately 120° (H) by 100° (V) per eye, with an acuity of 40 ppd, corresponding to 20/30 on a standard Snellen eye chart.”
“Once the GPU has rendered the different regions, the pixel data is reshaped for transport. Consider for example an image with two rendered regions: one high acuity, one LA. The high acuity (HA) region may be relatively small, for example, 640 × 640 pixels. The LA region may be larger, for example, 1280 × 1600 pixels. These two regions are combined into a single image frame by reshaping the HA pixel data to be the same width as the LA pixel data. In this case, the 640 × 640 pixels are arranged in a block that is 1280 × 320 pixels. This is not a scaling operation: the pixels are not modified, only the arrangement is changed. This HA block is prepended to the LA block, making an overall image that is 1280 × 1920. A line of metadata is added at the top, as is another blank line between the HA and LA blocks to keep the total number of lines even (which simplifies parts of the system). The total image sent to the display electronics is 1280 × 1922.”
“We have designed and fabricated a very high pixel count (>18MP), ultra‐high ppi (1443 ppi) OLED display for VR applications. This is currently the world’s highest resolution OLED on glass display. White OLED material and color filters were used to meet the high ppi requirements, and an n‐type LTPS backplane was used to meet the panel driving and image ghosting requirements. Foveation logic was implemented in an FPGA to convert the low bandwidth foveated image rendered on a mobile processor to the high bandwidth stream required by the display. The result is a stunning visual experience in a mobile VR system.”
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Eyes do not see everything. You’re confusing eyes with higher level visual functioning. What reaches the visual cortex is possible to be entirely in consciousness but it usually isn’t due to our attention.
Our eyes really see extremely little detail in our periphery, but our brain in a way upscales it.
Look up anatomy of the eye and the fovea. Look at the concentrations of cones and rods.
Watching someone’s experience of going blind is fascinating. My dad slowly lost vision, in a way where certain areas of his field of view were obliterated in an instant but only small areas at a time.
He could walk down a footpath, seeing a full and normal footpath and tread in a drain with the cover off. He couldn’t see the drain. He also couldn’t see any gap in his vision where the drain was, there was continual footpath. His eye couldn’t actually see anything in that part of his field but his brain saw perfect footpath with no idea he was actually seeing a hole of nothingness in amongst it.
Visual perception is fascinating stuff.
To the OP, yes foveated rendering is the holy grail of vr. Many teams are working on it but haven’t nailed it yet. It’s not as easy as it seems on the surface.
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That’s the smoothing I mentioned, in my previous post. That only works to a limited extent, you still need a fairly high resolution image before you blur it. If you blur it too much in an effort to get rid of the jaggies, you WILL notice it near the foveated area, unless you make the foveated area large, which sort of defeats the purpose.
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I personally can read in my peripheral vision … or at least I could before I started needing glasses. You can train yourself to see very well in your peripherie. The difference in “resolution” is not that much, or in other words, you don’t miss it. There is a great deal of redunancy in rods and cones in your eye. You can see much much more if you could only focus, and if your brain didn’t discard so much detail. When is a person begins to lose their eyesight as they know it they are probably more than 50% gone already when they notice it.
The fovea is actually an area where there is a great deal of distortion in the layout of rods and cones including a big hole. The brain reassembles and fixes it. With training you can see that too.
Your brain chooses only a tiny fraction, in the single digit percentage, of what it “sees” at any given moment. Much of what we “see” isn’t even actually there.
BTW, they haven’t found the holy grail either.
True. The eye is an amazing device.
My dad was an optometrist and I learned a lot from him. The back of your eye has quite a few blood vessels, which your brain learns to ignore. You can actually see them, under some circumstances. However, if you learn to see them, it’s not so easy to ignore them. Looking at my screen, if I pay attention, I can see those blood vessels pulse with every heartbeat.
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Yeah I totally agree about the brain side of visual perception. Our attention is usually so narrow that consciousness holds only a tiny amount of the visual information our brain actually is receiving. I totally agree we can each train to hold more of that in consciousness, way way more.
Being able to read in your periphery may have a lot more to do with your brain than your eyes. As a child I was very short sighted by the time anyone found out. I sat at the back of the classroom and never demonstrated any problems comprehending what was written on the board, so no one knew. I could decipher the darker greys from the lighter greys in the smudged blur of each letter and learned to distinguish each letter from blurry grey smears. Although each new teacher took a few days to adjust to. I assumed it was like this for everyone. It was an eye opener to get glasses and realise what others saw. So with very poor visual input I could still read by training the brain.
The structure of the eye is still such that the centre of the eyes focus detects far more detail than the periphery, but also that the periphery is far more sensitive to movement which as others have mentioned would be one of the obstacles in the way to finding that holy grail. The centre of our eyes focus needs higher resolution than the periphery does to provide enough to trick us into immersion in vr. However the periphery also needs to not be distracted by unintended movement from for example the shimmering of aliasing.
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There some good points that now have my atention as i have just done lens mod on the vive ,and well the sceptic in me was suprized at the diffrence and wonderd why they used these frsnal lens in the first place! And Ono what and how bad will the frsnal be on the pimax and how will i train my brain to egnore what i now know is wrong with them?
The new lenses are said to be better than v2 & v3. Having tried the v2. You shouldn’t likely have the issues you do with the vive’s as these are custom due to shape of the lenses.
Fresnel lenses are used for various (good) reasons. They reduce some kinds of artifacts (compared to standard lenses), but they have their own set of issues. It’s basically a set of tradeoffs. I’ll wait until my headset arrives, before I make any judgements.
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Fresnel can provide a certain bulky lens shape in a more flat configuation. Making it both flatter and lighter than the equivalent normal lens
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Of those who tried the V2 - did you notice that they were fresnel lenses. I did not, so I am wondering if they were, or if they actually introduced these only afterwards in order to address the convergence issues.
If that is the case, I will not automatically assume that I personally will like them more, or as much, as I liked the V2 lenses. They may now be addressing issues I did not notice in my 10 minutes hands-on, but maybe would have given me nausea or headache during longer sessions; but possibly at the price of less sweetspot, more godrays etc… (I know, Xunshu had said that the sweetspot allegedly is bigger on the V5 compared to the V2/3 but I found this hard to believe because I perceived the sweetspot of the V2 to be ending at the very outer rim of the lens, hardly possible to improve).
So I am still not sure what to expect.
Now try looking at that exact word again upside down (turn the book upside down)
you will notice everything in focus? (well i do)
Speed reading is about expanding that focus area after the school deliberately shrinks it…)
cheers
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V2 were fresnel lenses. Saw a circlur ring just near the peripheral.
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I wasn’t really sure how to express the difference the lens swap made ,ok not 100% but they were not designed for the vive ,but the trade offs aren’t that apparent to me with that in mind ,clearer, brighter ,crisper against a bit lighter and a bit more depth is what i get ?
That said its not that i’m not chomping at the bit to get my pimax , its been a hard wait but now i know the vive has blurry ,dulling ,godraying lens,s ,will i notice this with pimax .
Best person i know to ask will be martin @SweViver when he can do the Q an A ,after all i took the plunge to do the lens swap after watching his video (thankyou) so we know at least he has seen the difference not having fresnel lens,s
So martin if you are out there waiting for your tester unit ,please can tell us if someone using the none fresnel lens,s is really going to fell like they are wearing a stock vive or if the experience is alot less dramatic 
and done
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Whahahahahahaha… pffff… WHAHAHAHAHAHAHAHAHAHA.
You sure are funny. First time reading about VR?
WHAHAHAHAHAHAHAHAHAHAHAHAHA 
There’s always room for humour 
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The reason why I can read in my prayer free has to do with the fact that I trained myself sometime in my twenties
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