White artifact, possibly from layer shading?

madrobot · Post by **madrobot** » Tue Jun 16, 2009 5:10 am

Can anybody think of a fix for this?

See along the bottom of Duggy's right arm, there's a white line?
What's causing that? I think it's the layer shading, but is there
a way to fix it?

(I have tried increasing the line width along there to cover it, but that doesn't change anything, the white goes with it.)

PS. ASpro 5.6

Now that I look at it, there seems to be the same issue on a lot of the shaded layers, just not all are as obvious.

madrobot · Post by **madrobot** » Tue Jun 16, 2009 5:42 am

I think I thought of something
I'll mesh instance dup the outline, and blow up the line width slightly if needed, to cover the unsightly artifact.

(could shrink line on original layer, keep dup line at normal width.)

(I opened the file on the laptop as the work machine decided it didn't
like the file for some reason. Double clicked it in explorer, AS6pro demo
opened it and is now ticking down 30 days. I was saving that for a few weeks time to have a look at it. What a pain in the...
It's my own fault, I should have cottoned on when all the AS file icons had changed to blue.)

heyvern · Post by **heyvern** » Tue Jun 16, 2009 5:45 am

I did some tests on my own and don't have that "line". It appears to be jaggies having to do with antialising. Look at the rest of the lines around the head face hair and other arm. They have the same "line" or edge artifacts.

What format is the final image? Jpg? Png? Do you have antialiased edges turned on? Do you have mutliple shapes on top of each other? Just guessing.

Any chance we could get the anme file to check it out?

-vern

madrobot · Post by **madrobot** » Tue Jun 16, 2009 5:49 am

That works. cool. I took down the line width on the lines underneath on that arm, after duping the outline over the top. And removing layer shading and shadows off the dup.

I dont know what causes that white issue, maybe it's the layer shade, and maybe it's meant to work that way and the issue is with me. But in the mean time this looks better and I'll go back and fix the nose, other arm and so on...

Thanks for being there, just when I neeeeeeded you most!

EDIT:
whioah, thanks Vern. you overtook me as I was typing. I'll check those now

madrobot · Post by **madrobot** » Tue Jun 16, 2009 5:58 am

OK Vern, I have stripped out that arm layer and saved it as an anme file.
Do you want to PM me your email, or is there another way I haven't thought of?
(I don't have hosting.)

heyvern · Post by **heyvern** » Tue Jun 16, 2009 6:05 am

This is due to antialiasing.

Mike explained this to me very well during beta. When one color is over another color and it is antialisaed it will "mix" with the underlying color. If the color above is darker or lighter a line is visible. This happens in Photoshop as well.

In photoshop paint two identical sized circles of contrasting colors over a neutral back ground preferably a medium gray. The antialasing will produce a "line" of the underlying color.

This a yellow circle over a dark blue circle created in Photoshop. Both circles are identical. I duplicated the layer and changed the color.

-vern

madrobot · Post by **madrobot** » Tue Jun 16, 2009 7:01 am

Thanks Vern
This might sound like a stupid question -
but is there anything I can do about it?
(Other than duping keylines over the top)

Also, wierdly, it doesn't seem to be an issue when I render frame 0
but then from frame 1 on it is.?? Wierd.

Genete · Post by **Genete** » Tue Jun 16, 2009 8:41 am

Yeah, that's "wierd"

-G

madrobot · Post by **madrobot** » Tue Jun 16, 2009 11:25 am

Genete - I am checking the forum while my kids eat tea.
They are stoked to see Duggy on the forum, but even more delighted
when I told them "they laugh at me" about you guys on the forum.

chucky · Post by **chucky** » Tue Jun 16, 2009 12:49 pm

Whatabout rendering at a much higher resolution , then reducing it afterwards.

heyvern · Post by **heyvern** » Tue Jun 16, 2009 1:18 pm

madrobot wrote:Also, wierdly, it doesn't seem to be an issue when I render frame 0
but then from frame 1 on it is.?? Wierd.

I don't see how that's possible. Unless you have keys on the strokes or fills or the camera zooms in or changes somehow, frame 0 is the same as any other frame.

Couldn't tell you how to fix this without seeing the file. Would really like to see that file.

-vern

Mikdog · Post by **Mikdog** » Tue Jun 16, 2009 1:35 pm

Exactly what chucky said. Render it out like 2, 3 or even 4 times the resolution, then in Photoshop or something scale it down to the size you want. Viola.

When I rendered out final animation for TV recently, I noticed some nasty jaggies around my image PNG's at the PAL size. HOWEVER - I rendered out BIG, twice the size, then in Photoshop brought it down to PAL size. Made it look way smoother and cleaner.

Try it, you might be amazed.

slowtiger · Post by **slowtiger** » Tue Jun 16, 2009 2:29 pm

The "twice the size" hack is already incorporated via the "better image quality" checkbox. Did you try that?