About .jpg

[Stuart Thiessen]

A useful format that was designed to take the place of .gif is .png.  It may
be possible to find something simple that would make that conversion.  Many
who protest the restrictions on .gif have switched to .png.

FYI,

Stuart

> -----Original Message-----
> From: SignWriting List [mailto:SW-L at ADMIN.HUMBERC.ON.CA] On
> Behalf Of Valerie Sutton
> Sent: Thursday, October 02, 2003 11:02
> To: SW-L at ADMIN.HUMBERC.ON.CA
> Subject: Re: About .jpg
>
>
> SignWriting List
> October 2, 2003
>
> Dear SW List, Nana, Sandy, Daniel...
> You are right that GIFs are better for SignWriting
> diagrams...But maybe
> Nana doesn't own a graphics program that can create a GIF?
> They are not
> as common as you would think, actually...
>
> So what are the programs on Windows that can create the GIF format?
> Photoshop (which costs a lot of money)....Perhaps CorelDraw?
> That costs
> money too...any free programs that you know of?
>
> Val ;-)
>
> ----------------------------------
>
>
> On Thursday, October 2, 2003, at 07:10 AM, Sandy Fleming wrote:
>
> > Hi Daniel, and everybody!
> >
> > I notice Nana ignored my advice and did save it as .jpg, though  :)
> >
> > To illustrate the point, if you open Nana's .jpg in a
> graphics editor
> > and
> > zoom in closely, you'll see a lot of grey pixels around the black
> > lines.
> > This is due to having edited and saved it as a .jpg.
> >
> > It may not look too bad now, but if people edited it a lot, it would
> > get
> > gradally worse.
> >
> > So use .gif for SignWriting!  :)
> >
> > Sandy
> >
> >> -----Original Message-----
> >> From: SignWriting List [mailto:SW-L at ADMIN.HUMBERC.ON.CA]On
> Behalf Of
> >> Daniel Noelpp
> >> Sent: 02 October 2003 14:11
> >> To: SW-L at ADMIN.HUMBERC.ON.CA
> >> Subject: About .jpg
> >>
> >>
> >> Hello Sandy
> >>
> >> About the .jpg format you did an excellent job explaining it,
> >> but I need to explain why .jpg "ignores" some information.
> >>
> >> Sandy wrote:
> >>
> >>> If you do use .jpg, you'll find that smudging creeps into the
> >> image if you
> >>> edit it, because the .jpg format works by ignoring some of the
> >> information
> >>> in the image - it loses a little information every time you
> >> change it. The
> >>> ..gif format keeps all information, so your SignWriting
> will remain
> >>> crystal clear no matter how many times you edit the image!
> >>
> >> When storing a .jpg the colors in the picture are transformed
> >> in a spectrum. This is a mathematical representation to make
> >> compression easier. Now the funny part is that not the whole
> >> spectrum is saved. You even can tell Photoshop or many
> >> other software how much of the spectrum you want to save
> >> (as a slider or as a percent value). The better quality you have,
> >> the larger the file will be.
> >>
> >> This is a very clever trick because the smudging is almost
> >> inperceptible for photographic pictures. DVDs use a very
> >> similar trick to encode movies.
> >>
> >> So I hope you don't object to this small lesson even if the
> >> subject doesn't relate to SignWriting directly. Sandy is right:
> >> Don't use .jpg to save SignWriting texts!
> >>
> >> Cheers!
> >> Daniel
> >>
> >
>