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Re: do vector graphics enhance our concept of self?

From: jonathan chetwynd <j.chetwynd@btinternet.com>
Date: Fri, 26 Jul 2002 17:20:17 +0100
Message-ID: <005a01c234c0$562d4dd0$c27027d9@RJCHETWYND>
To: "Charles McCathieNevile" <charles@w3.org>
Cc: "WAI List \(E-mail\)" <w3c-wai-ig@w3.org>

Dont get me wrong,  i love svg, not sure its quite the right direction but
its moving fast.

my point was really that jpegs are quite a few years old, and bar the silly
copyright issue, surely someone (in scandinavia?) could bring out a mark 1
version with transparency?
this might degrade quite nicely from SVG.

seems weird to me, that these 2 standards (gif and jpeg) got stuck in the
mire of history...

sorry if this is a ramble*, but I spend hours trimming and resizing jpegs
and then have to convert them to gifs, merely for transparency, and in many
cases the file size can be up to 3 times, which for (no increase in quality,
and) transparency is very expensive.


*given the very high use of faces, it doesn't seem unreasonable that there
might be mileage in a specific algorithm, there certainly are very high end
animated ones.
vector gradients of tone, which svg most probably is capable of.

----- Original Message -----
From: "Charles McCathieNevile" <charles@w3.org>
To: "jonathan chetwynd" <j.chetwynd@btinternet.com>
Cc: "WAI List (E-mail)" <w3c-wai-ig@w3.org>
Sent: Friday, July 26, 2002 1:01 PM
Subject: Re: do vector graphics enhance our concept of self?

> Please explain further - I am not sure if I understand...
> (in case I do:
> Do you mean photo-realistic pictures of faces, or cartoon-type
> or somewhere in between?
> It seems to me that SVG is in fact a fairly small hammer for most graphics
> nuts, and it certainly supports transparency and sprites (objects whose
> position and other properties can be animated) in a fairly lightweight
> manner.
> GIF and PNG support transparency for photo-realism - as far as I am
> aware jpeg does not (but I am not a graphics expert). But if you embed a
> within SVG you can clip it, set its transparency, use a filter or mask
> effect, etc.
> If you can describe an example I will try to produce it in SVG (by using
> code editing instead of one of the nice tools that I never quite get
> to installing - try doing THAT with the source of a GIF <grin/>. However I
> think editing code is a silly way to author in general, and appreciate
> this is valuable because you can also do it with graphics tools that have
> more appropriate user interface).
> Cheers
> Charles
> On Fri, 26 Jul 2002, jonathan chetwynd wrote:
> >Is there a (popular) graphical compression algorithm for faces? with
transparency for sprites?
> >Are vector graphics capable of meeting this need? (svg+jpg seems like a
large hammer for such a small nut)
> >Do we need such a minimal standard? (peepo uses gifs, and has done for
some years, because of the need for transparency.)
> >
> >Looking through the music sites, the use of jpeg is noticeable (that is
the absence of flash, or vector graphics) where representation of the
artiste is concerned.
> >(Though flash is frequently used for navigation.)
> >
> >for films categorised by disability visit:
> >
> >jonathan chetwynd
> >http://www.peepo.com
> >
> >
> >
> --
> Charles McCathieNevile    http://www.w3.org/People/Charles  phone: +61 409
134 136
> W3C Web Accessibility Initiative     http://www.w3.org/WAI  fax: +33 4 92
38 78 22
> Location: 21 Mitchell street FOOTSCRAY Vic 3011, Australia
> (or W3C INRIA, Route des Lucioles, BP 93, 06902 Sophia Antipolis Cedex,
Received on Friday, 26 July 2002 12:20:14 UTC

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