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Re: Yet another anti-aliased KDE screenshot



> On Mon, 29 Oct 2001, Dan Born wrote:
> 
> > That's rather impressive.  I have a bunch of true type fonts, and
> > anti-aliasing turned on in kde, but the only font available for a fixed width
> > font under the control center is the "fixed" font, and "fixed" is the only
> > thing available in konsole.  This is ugly looking...  how do I fix it?
> 
> I don't get it: why this antialiased hype? This blurry stuff makes my eyes
> hurt. How can anybody be using this? And it's *ugly*!

AA filters don't "blur" as such. They are a low-pass filter which removes
artifacts in a sampled signal. In this case, the artifacts result from
having geometric shapes (lines, fonts etc) which are "analog" and have
frequency components higher than your display (a sampling process which
represents a geometric line as a sequence of dots) can show. Sampling a
signal which has not been band-limited (filtered to remove frequencies
higher than half the sampling rate) results in things *appearing where they
are not* - that is, the jagged edges which appear even with Type 1 or
TrueType fonts with AA turned off. The jagged edges aren't real. AA filters
do vary in quality, but basically any functional low-pass filter is better
than none.

So, in short, if you actually want to see the font, as opposed to a bunch of
artifacts, you need to use anti-aliasing. Don't mistake smoothness for
blurring.

- Daniel

-- 
******************************************************************************
*      Daniel Franklin - Postgraduate student in Electrical Engineering
*      University of Wollongong, NSW, Australia  *  d.franklin@ieee.org
******************************************************************************



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