seams

[moorsel]

I am trying to do some cut-out animation. From one picture I created in paint shop pro the parts that make up the figure. After importing these parts into AS, recreating the figure and rendering I notice there are seams on the borders of the parts. This hapens even as the color of all parts is the same. I also turned of anti aliasing when exporting from paint shop pro.

Why could this happen?

Gr,
Frank

[Rasheed]

This can happen if you don't start out with a transparent background and remove the background afterwards, and/or if your drawing was made with a "fuzzy tool", like a brush or an eraser, instead of a pencil.


Screenshot from The Gimp. Outline and fill drawn on white with a colored brush. and pure white replaced with 100% transparent color.

Another problem occurs if you export from your image editor using less than 24 bits. Compare these two PNG images, each exported from their own AS project file (frame 13). Each AS project file used the same image layers, but different source images, a 2 bit PNG image, and 24 bit version of the same PNG image, respectively. You can clearly see the outlines around the shapes in the left image. AS expects a 24 bits PNG image.

[moorsel]

I did a little test, I created a simple rectangle in psp and exported it to a png. When I import this file into AS and place two instances over each other the result shows seams (see below).

This is the png file I created:



When I import this file into AS and place two instances over each other the result is this



and this also shows seams.

I created the figure from scratch with a transparent background.

I cannot explain why this happens

Gr,
Frank

[Rasheed]

Well, you didn't save your source files as 24 bits versions, as I explained earlier (I edited my post while you were replying).

[moorsel]

OK, but in your right picture I still see seams (altough much thinner than in the left picture). Why is this?

Gr,
Frank

[Rasheed]

That is anti aliasing introduced by AS, because I forgot to deselect the appropriate checkbox (see screenshot):

[moorsel]

I still don't understand it, again I created a png



I did this with Fireworks and AFAIK this is a 24 bit png. When I do the same little test as before, the thin seams appear also (despite 24 bit png, uncheck the anti alias box).

Gr,
Frank

[Mikdog]

I also get this issue.

I learned to live with it.

Nobody really gave a heck there were outlines around my images (although BARELY visible.)

It bugged the hell outta me, and I replanned and figured out a way of working around it.

Alternatively, you could use VECTOR IMAGES that DON'T produce outlines like the ones you're describing.

OR, Rasheed is completely right and you just need to make sure your edge isn't anti-aliased and exported 24-bit PNG.

Good luck. I'd be interested to see your results if you come up with a fix.

[Momcat]

If you are using Photoshop, you can go to Layer/Matting/Remove Black Matting (I don't have it open, so the wording may vary) This will get rid of that seam.