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360Photos rendering problem

relaxculus
Expert Protege

Finally i can show the issue what many people don't see:
the wave effect while looking around in Oculus 360Photos app.
I created a simple grid in Photoshop and saved in 2:1 ratio.
Then i converted and saved this picture to cube faces.

Please download and unzip:
https://drive.google.com/open?id=0BzldgVVPxli7eEdxYjY3VWM5TDA

Anybody can see the difference, the strange artifact when you look up or down:
"grid-equi" has some serious rendering bug, while "grid-cube" is clear!

Ok, no problem, then we have to use the cube format, right?
Well, yes and no 😞
Unfortunately for some reason the cube format cannot have such sharpness
like i can see with my 6000x3000 pixel pictures in equirectangular format.
Even if i raise the cube faces size from 1536x1536 to 2k or even more.
Rendering is more blurred. I tested it with many of my panoramas.

Now i cannot choose, which format to use 😞 Or just forget 360Photos app?
How does these pictures look in other apps?
thanks!

3 REPLIES 3

relaxculus
Expert Protege

mlearmonth
Protege
Hello Relaxculus

I downloaded and viewed the two versions. The equirectangular version is much sharper but the image starts to break up perhaps 30 to 45 degrees above and below the horizontal while the cube face version is much less sharp but remains consistent nadir to zenith. The image breakup on the equirectangular version is like a strobing effect, or a moire pattern interference effect because the sharp/thin lines are canted at a slight angle to the pixel grid of the Galaxy S6. I have seen that effect in some other viewers that I have tested.

Mike Learmonth

relaxculus
Expert Protege

Yes, but i see this effect on my normal pictures too, not just on this grid pattern. The picture waves a little while i looking around slowly. It's an antialias issue i think.

2 questions:

- why can't we have little AA applied to equirectangular version?

- or why cube format size is maxed to 1536x1536 cubes? I think 2k x 2k could have such sharpness as the equirectangular version, and which is the best possible for current gen. GearVR.