How Photo Optimize Anti-aliasing works?

[Simon2099]

Thank you.

After reading your description I understood Xara needs it for vector images, I found it is the same functionality of the Export / Settings window.
I did not see any change because I tested a raster image. I may say the option does not work with such kind of images, actually, you should not need the advanced options.

[handrawn]

correct me if I am wrong - but you can only do a photo/optimise operation on a bitmap...

and yes the function is the same for the optimise and for the export to bitmap [and for that matter, bitmap copy]

you will not see any difference in many instances 'can' is the word, not 'will'

[Acorn]

Could you confirm "raster" is the same as bitmap? Sometimes punters rescale away from integer widths and heights or non-integer positioning against a textured background so you can still get aliasing.

Acorn

[handrawn]

here is an example of the difference in anti-aliasing at the edge of a bitmap export...

[handrawn]

and export from vector shape:



simple examples, not that much to see... but for some requirements when matching one bitmap to another for example it can become important at the pixel level