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Re: Export artifacts

Posted: Thu Dec 12, 2024 11:48 pm
by Greenlaw
slowtiger wrote: Wed Dec 11, 2024 3:00 pm That zip only contains the Moho file, not any image.
I was referring to the image linked in his post, not the .zip.

Good find about the AA issue. :)

Re: Export artifacts

Posted: Sat Dec 14, 2024 3:48 pm
by Ax209
slowtiger wrote: Thu Dec 12, 2024 12:54 pm I think I've found a solution.

There's lots of tweaking points after an image is imported to Moho, I've tested them all. First, these are the ones that make no difference:
Image tab: Warp using bones
Image tab: Nearest neighbour sampling
Image tab: Higher quality rendering
Layer tab: Scale compensation
Project window: Scaling

These all give the same result with a dithered border of the square, and artifacts in the anime girl image (and it makes no difference if I turn that one 90°).

The one that makes a difference:
Project settings: Antialiasing - must be checked.

This gives a clean outline of the black square, albeit not a sharp black/white border on all sides. Which is something we have to live with, and in today's HD environment and in motion nobody will notice anyway.
Thanks for taking the time with this for me. Sadly I can still see these artifacts even when I have the anti-aliasing on. It's not as easy to see, for sure, but I can still see them. The nature of my work also relies on the image being pixel-perfect throughout.
Maestral wrote: Thu Dec 12, 2024 4:26 pm Image

Perhaps this could be informative to someone...

The image above is a test with no Antialiasing where
"provided" and "with transparency" are the same (156x156 black rectangle on transparent bgd 256x256) / had to try it with my own export
"157x157 with transparency" is still 256x256 but the rectangle is 157x157
"no transparency" is just 156x156 png.

However, the thing that we all have the same artefacts, especially on the coloured image, is rather odd to me.
So when you say "transparency" are you referring to an exported black square that you made yourself? Or is there a "transparency" option in Moho that I'm missing?

And for the other that was clear, you simply changed the size of the square?

Does anybody feel I should report this as a potential bug?

Re: Export artifacts

Posted: Sat Dec 14, 2024 4:21 pm
by Maestral
provided
= 256x256 png with transparent bgd / 156x156 black square in the centre
with transparency
= 256x256 png with transparent bgd / 156x156 black square in the centre


no transparency
= 156x156 png file / 156x156 black square

157x157 with transparency
= 256x256 png with transparent bgd / 157x157 black square in the centre


I was almost certain that the odd (rather than even) numbers of pixels would be prone to causing issues with antialiasing and pixel proper distribution, alas - 157x157 worked as a charm.