Jagged Edges after rotating a stroked image

I've have this problem a lot but I guess I'm just now getting around to ask about it.
When I have a photo in cs2-cs3-cs4 etc and I rotate it at an angle I get fine jagged edges all along the sides. It's becomes very pronounced in a stroked image even when I I stroke the image after rotation. The problem is more obvious when the image is not at angles like 45 or 90 degrees but more visible at in between angles.
Any suggestions?

ryanroy.roy wrote:
I've have this problem a lot but I guess I'm just now getting around to ask about it.
When I have a photo in cs2-cs3-cs4 etc and I rotate it at an angle I get fine jagged edges all along the sides. It's becomes very pronounced in a stroked image even when I I stroke the image after rotation. The problem is more obvious when the image is not at angles like 45 or 90 degrees but more visible at in between angles.
Any suggestions?
What you are seeing is alaising, and it is inherent in raster graphics when the line to be shown is not parallel to the columns or rows of the image.It can be mitigated to some extent by antialaising, which softens the edges of the diagonal lines. When you select all of an image and stroke for a border, antialaising is used. With the polygonal lasso tool, you can turn antialaising on or off. Alaising is less apparent with very high resolution, but it can't be elilminated.
Here are triangular selections with antialaising turned on and off:

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Jagged edges after rotation

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//draw bg image
g2.drawRenderedImage(bsrc1, null);
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at.rotate(angle,612/2,486/2);
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Message was edited by: Caillera

Jagged Edges after rotating a stroked image

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