Is there option to improve 8k sharpness?

It would be great if Pitool included a “Sharpening” filter slider similar to that of vorpX.

The vorpX slider seems to be a simple post process effect that increases the contrast between pixels, which greatly improves clarity and readability of textures. It has no perceived performance cost, and is adjustable in real time. It has a range from 0.00 - 2.00 (incremental stepping of 200 to choose from).

In my Pimax4k, I often turn this up nearly to max, and it has made a tremendous impact on clarity of image quality in my vorpX games. Without the sharpening enabled, the image is smooth, but comparably blurry.

I have found that I can increase game resolution to eliminate aliasing, then turn up the sharpen filter to reveal all of that smoothed out pixel information. The result is a clear image with very high detail. It also helps improve readability of low resolutions. Go to extreme resolutions with too much sharpening, and you’ll get a shimmer effect - like being too clear. But that is why having a range slider is useful, to adjust as desired.

The clarity of sharpened image on my 4k, combined with elimination of perceived SDE, has made it so I cannot return to my CV1 - despite it’s better colors and 90hz. This is what has me excited for the 8k!

I strongly believe that a simple post process sharpening method would go along way to improving image quality of the 8k. It is my speculation that while this could also improve the 5k, the additional pixel information of the 8k could stand out even more when sharpened (just my experience when comparing sharpened CV1 vs P4k).

So please, please give this a try soon. It may influence the current debate of 5k+ vs 8k image quality.

8 Likes

Thank you folks and @deletedpimaxrep1.
And sorry for my late reply.

@neal_white_iii sharp filter is great idea.
@deletedpimaxrep1 please confirm to engineer.

5 Likes

@deletedpimaxrep1,@Sean.Huang
Have you checked it?
Indeed the sharpen filter provides 8K image more clear, I tested it my PIMAX 4K

Please implement the filter to PiTool.

4 Likes

Eh?

Sweviver has taken the lens out and shows that the same area of the screens visible with the naked eye lights up for both the 5K+ and the 8K. This would suggest identical utilisation ONLY IF the lenses are exactly the same size and extend outside of this bit the same. If one of them, for example the 8K extends beyond this bit more than the 5K+ does, it means less of the 8K screen is utilised.

Sebastian on MRTV said that both headsets use the exact same distortion profile, how would that be possible if the lenses or the panel surfaces used are different?

This is the information that Pimax project manager has supplied to me.

Unless they could add another connection for native 4k. Just like a separate connection that skips the upscaler step. It could be used for native 4k at 60hz. If the controller can handle that.

1 Like

Interesting idea. I think that another bridge chip would need to be added to the circuit board.

Neal could you try your simulated example with the cockpit capture because the picture show here is more a best example of movie usage of the 8k. I’m not convince that this preprocessing will beneficial in all cases. Very interested to see the results I’ve Tried with Gimp to apply some processing to the mentioned capture with limited success

If my memory is right pimax said same profile but different parameters

Here:

PM_Sean3d
@mixedrealityTV

We are very appreciated for your comparative tests and questions that you have raised .

Our internal testing has not found that 8K distortions are more serious than 5K, but technically, There is no correlation between distortion and refresh rate, we will do special internal testing to see the real problem.

In addition, the principle of 5K & 8K lens profiles is the same, but there are slight differences in the parameters between the two models.

1 Like

Thanks all and I understood.
I believed 8K has real 4k panel. It has about 200% pixels than 5K’s one.
However, according to calculating by Sweviver’s photo, 8K has only 130%.
I disappointed very much.