Hi Kenneth,
Using Opera, Safari, Firefox and IE+ASV in Windows, I don't see anything that I
would not be willing to attribute to retinal effects caused by the close
superimposition of red and blue (two mutually unfocusable colors according to
one of my undergrad intro psych texts -- I don't recall the neurological
explanation, but something to do with habituation of cones and over-excitation
of bipolar cells being dampened by ganglion cells): namely the hint of a
magenta afterimage just south of the border of the colors and the hint of a
cyan afterimage just to the north, together with some waivering bands of
horizontal movement I would attribute to saccadic movement and fixation. What I
see is similar to the bitmaps at
http://en.wikipedia.org/wiki/Flag_of_Haiti
My Haitian sister says the colors ought to migrate a bit more (red towards
magenta and blue toward purple)???
I don't know if official national designations of flag colors come in sRGB
space or if they are registered with some hypothetical UN color space, or
Pantone or whatever. Chris Lilley probably knows.
But the antialiasing phenomenon you describe is not something I can see in my
browsers. Maybe a screen shot would be worth sending? Or, there are lots of Mac
users here who might be able to replicate what you're seeing. The SVG code
you've written looks appropriate to me.
good luck
David
----- Original Message -----
From: Kenneth N
To: svg-developers@yahoogroups.com
Sent: Wednesday, December 29, 2010 6:40 PM
Subject: [svg-developers] Re: anti-aliasing fill
Please see:
http://homepage.mac.com/nellisks/svg/flags/flag.haiti.svg
The problem exhibits itself with the following browsers, among possibly
others:
. Mac/Opera 10.63
. Mac/Safari 4.1.3
. Mac/Firefox 3.6.12
. Mac/OmniWeb 5.10.3
Maybe it's a Mac thing? Haven't tried with non-Mac browsers.
-Ken Nellis
--- In svg-developers@yahoogroups.com, Holger Jeromin <mailgm...@...> wrote:
>
> Kenneth Nellis schrieb am 28.12.2010 22:26:
> > In SVG renderings, where, for example, two non-rotated rectangles of
> > solid but different colors abut, I see a single line of pixels at the
> > border that I attribute, perhaps erroneously, to anti-aliasing. I
> > wish to know what I can do to eliminate this artifact. I tried <svg
> > color-rendering="optimizeSpeed">, but this had no effect in my two
> > browsers (Mac/Safari 4.1.3 and Mac/Opera 10.63). Any ideas?
>
> Please provide an example.
>
> --
> regards
> Holger
>
[Non-text portions of this message have been removed]
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