Re: Pixels Are Not Little Squares

Lawrence D'Oliveiro <[email protected]>
Newsgroups gmane.comp.lib.cairo
Organization Geek Central
Message-ID <[email protected]>
On Sun, 24 Apr 2016 18:07:01 -0700, Krzysztof Kosiński wrote:

> As far as I know, Cairo does use an approximation of the box filter
> when sampling polygons, or at least does so by default.

The available antialias settings for drawing shapes and text are
documented here
<http://cairographics.org/manual/cairo-cairo-t.html#cairo-antialias-t>.
In my experience, the DEFAULT setting seems to be the same as BEST (not
FAST, as you might expect).

If there is a setting corresponding to a box filter, I would expect it
to be FAST.

> The "little square" model is not a good general description of how
> image processing works, but it is reasonably good lie-to-children when
> discussing box-filtered sampling.

These “children” who aren’t getting the results they expect won’t
like being lied to.
-- 
cairo mailing list
[email protected]
https://lists.cairographics.org/mailman/listinfo/cairo
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.