- From: Charles McCathieNevile <charles@w3.org>
- Date: Fri, 26 Jul 2002 12:50:41 -0400 (EDT)
- To: jonathan chetwynd <j.chetwynd@btinternet.com>
- cc: "WAI List (E-mail)" <w3c-wai-ig@w3.org>
I think SVG is going to be your best bet here. It does have implementation, it is realtively easy to clip a bit of an image and resize it, I am pretty sure you can add transparency directly. (I am waiting for Jim Ley to say he has a tool that does this already, but if he doesn't, I am sure someone else does). Cheers Chaals On Fri, 26 Jul 2002, jonathan chetwynd wrote: >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. > >jonathan > >*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 >caricatures, >> 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 >jpeg >> 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 >bare >> code editing instead of one of the nice tools that I never quite get >around >> 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 >that >> this is valuable because you can also do it with graphics tools that have >a >> 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: >http://www.disabilityfilms.co.uk/ >> > >> >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, >France) >> >> > > -- 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, France)
Received on Friday, 26 July 2002 12:50:43 UTC