@deletedpimaxrep1, @Pimax-Support
First of all, thank you pimax team and testers.
However I bit disappointed by 8k’s blurred image.
I will switch 8k to 5k+ if there is no option to improve 8k sharpness.
Please tell me that is there any option?
e.g.
Addition, what upscale chip do you use?
It’s still my theory that it’s due to panel usage. If you look at Swe’s video he touches on the subject. However I think the panels are quite a tad bigger than the lens holders plastic size that’s touching the panel. It’s my theory that Pimax is using the same panels as Sony used in the XZ2 Premium (with customized driver IC), which is a 5.7" panel (btw this guess is based on that a Pimax rep said the panels are from Japan + Pimax also used the previous iteration of that panel in the Pimax 4k and I simply don’t know of any other 4k panel that could be used for VR).
It’s hard to distinguish from Swe’s video the size of the display area as seen through the lens holder but it does seem about the same as the lens size. Calculating the lens diagonal is about 10.40 cm while 5.7" would be 14.4 cm. And then it seems from Swe’s video that about 20% of that 10.40 can’t be seen through the lens. So you’d have about 8 cm used of the 14.4 diagonal.
Anyway we’d need more info of course, like panel size confirmation and length of the visible panel inside the cup holder, because I might be wrong with my estimation that it’s about the same as the lens size. But the Spanish group researched into this and came to the conclusion that this is the main problem with the 8k.
So if all that checks out, new lenses would be the only real solution
@deletedpimaxrep1
I really second an DIY upgrade kit from the 8k to the 8KX or by sending you the unit.
This would ease up my decison by such a huge amount.
If there is no way of upgrading I’m gonna change to the 5k+ too I guess.
The image clarity seems to be way superior …
@SweViver @VoodooDE @mixedrealityTV
Could you guys comment on the percived SDE difference ?
I know I just saw all of your videos but I’m still so undecided… I really want the best SDE possible but at the same time the better clarity seems to be a way bigger deal …
YES. THIS. VERY MUCH THIS.
And any support for us 3d printers, would be ideal as well…
@deletedpimaxrep1, I would also like to know if there will be a do-it-yourself kit to upgrade an 8K to an 8KX. If so, I’ll get an 8K as pledged, otherwise, I’ll downgrade to a 5K+.
Pimax selling an OLED kit for the 8K, now that would be great.
We need information on the tweaking capability of the upscaler.
Can it be integrated and controlled in PiTool?
It’s not likely. My understanding is that the scaler chip is very limited. It cannot even be bypassed to allow full 4K signal (at 60 Hz) to reach the LCD panel.
Ok then they need to find out what kind of post processing to apply before sending the image to the upscaler.
And I would like to have such settings integrated to PiTool.
“Pimax selling an OLED kit for the 8K, now that would be great.”
Sure, if you are willing to wait another year lol.
I am talking about an upgrade, I ll already be enjoying what I have.
We would send our headset to some place and they would do the upgrade for us.
In the MRTV interview of Pimax ceo he’s saying that they thinking an oled version, probably not something they would do for consumers but for backers.
Oh my god, spamming every thread with it aswell, the size of the lens / hole tells you nothing about utilisation because a lens literally bends light - thats its entire purpose.
See here, maybe you finally understand now: http://community.openmr.ai/t/dissapointed-in-the-quality/8265/101?u=sjefdeklerk
I made it in easy for you to understand steps. If you still don’t understand, sorry, I’m not sure how to explain this any easier. Really not meant that in a trolling way, I just really don’t know how to explain it any better than this.
They just need to pre-sharpen it. I’ve already mentioned this to xunshu, in another thread. That’s a standard technique for image processing.
Don’t you think they already tried things like that?
Given the beta testers’ screenshots, I don’t think Pimax has. Just because it’s a common image processing technique, that doesn’t mean that it’s known to VR developers (any more than say, convolution filters).
Also, like many image processing techniques, it needs to be done at the correct place in the sequence. If the image was sharpened AFTER the shrink, the resultant image would likely be over-sharped.
There is no such kit as far as I know.
X is still under development, and it’s a limited version during KS.
Please only include the available models into consideration for now.
[quote=“anon23564932, post:17, topic:8273, full:true”]There is no such kit as far as I know.
X is still under development, and it’s a limited version during KS.
Please only include the available models into consideration for now.[/quote]
@deletedpimaxrep1, respectfully, I think you may have misunderstood my point.
I think that you can improve the display on the 8K with a simple and relatively fast software change to your driver. After the image has been warped, but before it is shrunk to 2560x1440, apply a “fairly strong” sharpen transform, this should yield a better resultant image after the 8K stretches the image to 3840x2160. If that’s difficult to implement, you could try a “smaller” sharpen transform, just prior to sending the image to the 8K.
I am a software engineer with experience of image processing algorithms. I would gladly answer any of your developers questions. There’s a good chance that this would yield a more pleasing picture without needing to further increase the supersampling as much for the 8K. That is, you can get a better result image on the 8K with less graphics overhead (faster framerate).
This is essentially pre-distorting the 2560x1440 image sent to the 8K, to partially negate the inherent smoothing which occurs when the image is resized to match the native 4K panels. Potentially, this would be something turned on in PiTools and could have a few different levels of sharpening, since the effect would be “subjective” and the best choice for 1 game might not be the best for another.
This can probably be tested without even writing code. Starting with a lens-warped image, use a program like Photoshop or Paintshop Pro to sharpen the image, then “resample” the image to 2560x1440, and display on an 8K panel. If you PM me with a sample image, I can do several levels of sharpening and send you the results for testing. Note that I’ll need a day or 2 to do this, since I’m fairly busy right now.
Here’s an example of what I mean. The first image is captured from SweViver’s video…
Then I took the 5K+ image, reduced down to 25%, sharpened it a lot, and then stretched it back to 100%. Notice how the details were preserved?
More info…
https://diffractionlimited.com/help/maximdl/High-Pass_Filtering.htm
Look for “Unsharp Mask Sharpening” below…
http://developer.download.nvidia.com/shaderlibrary/webpages/hlsl_shaders.html
This discusses implementing a “blend” filter, but that is just a variation on the convolution matrix settings and can easily be adapted into a “sharpen” filter…
Thanks!
@Sean.Huang please check if it works.
Again, using the 8K you hardly notice a difference in sharpness. Even switching directly between models with same game and settings. This topic is exploding like crazy and out of proportions. I understand people need to find THE thing to make it easier to decide… But I’d say it’s still more about SDE and performance. Visually you won’t be able to tell the difference most of the times.
