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Have a look at this page. http://www.cengines.com/cehome.htm It has s
really good compression engine. They show a demo of compressing a 750Kb
file down to 8Kb and it still looks pretty good. Check it out.
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That's pretty cool. BTW, I've been getting pretty good compression off of my
software though. The "Pickle Jar Forest" image I posted was originally about 400k
that I crushed down to a 64k PNG.
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portelli wrote:
>
> Have a look at this page. http://www.cengines.com/cehome.htm It has s
> really good compression engine. They show a demo of compressing a 750Kb
> file down to 8Kb and it still looks pretty good. Check it out.
Steven Pigeon who most of you know by now once worked on a project related
to data compression. The link he gave me one time to see how well the sofware
they developed worked left me saying wow too. I am surprised that there
are not more products coming out now offering these advanced compression
techniques but I suppose that with this amount of compression one must
be careful about what they apply it to or data loss can cancel it's
effectiveness.
--
Ken Tyler
mailto://tylereng@pacbell.net
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one of the best and most interestinnnng compression routines I've worked with
was the FIF format, it searched for a fractal match of an edge in the image, and
applied it, thus saving very much space, at a big cost of compression time.
This format fitted very well on photos of higher resolution(640x480 and up),
since the way it searched and matched data made it possible to zoom into theese
images with a match that was higher than to zoom into the real pixel-based
image. (due to the nature of fractals)
Just my musings on data-complression...
Ken wrote:
>
> portelli wrote:
> >
> > Have a look at this page. http://www.cengines.com/cehome.htm It has s
> > really good compression engine. They show a demo of compressing a 750Kb
> > file down to 8Kb and it still looks pretty good. Check it out.
>
> Steven Pigeon who most of you know by now once worked on a project related
> to data compression. The link he gave me one time to see how well the sofware
> they developed worked left me saying wow too. I am surprised that there
> are not more products coming out now offering these advanced compression
> techniques but I suppose that with this amount of compression one must
> be careful about what they apply it to or data loss can cancel it's
> effectiveness.
>
> --
> Ken Tyler
>
> mailto://tylereng@pacbell.net
--
//Spider
[ spi### [at] bahnhof se ]-[ http://www.bahnhof.se/~spider/ ]
What I can do and what I could do, I just don't know anymore
"Marian"
By: "Sisters Of Mercy"
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On Sun, 18 Apr 1999 04:52:12 +0200, Spider <spi### [at] bahnhofse> wrote:
>one of the best and most interestinnnng compression routines I've worked with
>was the FIF format, it searched for a fractal match of an edge in the image, and
>applied it, thus saving very much space, at a big cost of compression time.
>This format fitted very well on photos of higher resolution(640x480 and up),
>since the way it searched and matched data made it possible to zoom into theese
>images with a match that was higher than to zoom into the real pixel-based
>image. (due to the nature of fractals)
>
>Just my musings on data-complression...
You were working with the FIF or were you working *on* the FIF? If the
latter, wow! I remember I've seen some fractal compression format in
Corel 7 (or was it Corel 8?) and it made wonders, esp. to b&w photos
of natural objects. I was curious then, would this format be public
soon? As I see it, no, and that's a pity.
How about wavelet compression? AFAIR it had something to do with
Fourier analysis of the image (like in JPEG) but compression and
quality seemed to overcome JPEG by a factor.
Just keeping my fingers occupied :)
---------
Peter Popov
ICQ: 15002700
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Actually, the link that started this post is a link to a wavelet compression
util. :-)
As for the FIF format, I have several viewers that can handle it, and I once had
a writer, sadly enough it was lost a looong time ago(four or five reformats...)
and, I wasn't working ON the FIF project, I was working with the FIF compressor,
and reading up on the algorithm. It was back when I liked doing demos, and I
madee some implementations of it with edge detection(didn't work for many
images) and trying to find a fractal match(Brute force). Needless to say, I
didn't succeed at all.. *hehe*
As for format definitions, I don't know whether it is public or if it is
licenced in some way. It would be nice to see it public(Bye bye JPEGS).
Peter Popov wrote:
>
> On Sun, 18 Apr 1999 04:52:12 +0200, Spider <spi### [at] bahnhofse> wrote:
>
> >one of the best and most interestinnnng compression routines I've worked with
> >was the FIF format, it searched for a fractal match of an edge in the image, and
> >applied it, thus saving very much space, at a big cost of compression time.
> >This format fitted very well on photos of higher resolution(640x480 and up),
> >since the way it searched and matched data made it possible to zoom into theese
> >images with a match that was higher than to zoom into the real pixel-based
> >image. (due to the nature of fractals)
> >
> >Just my musings on data-complression...
>
> You were working with the FIF or were you working *on* the FIF? If the
> latter, wow! I remember I've seen some fractal compression format in
> Corel 7 (or was it Corel 8?) and it made wonders, esp. to b&w photos
> of natural objects. I was curious then, would this format be public
> soon? As I see it, no, and that's a pity.
>
> How about wavelet compression? AFAIR it had something to do with
> Fourier analysis of the image (like in JPEG) but compression and
> quality seemed to overcome JPEG by a factor.
>
> Just keeping my fingers occupied :)
>
> ---------
> Peter Popov
> ICQ: 15002700
--
//Spider
[ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]
What I can do and what I could do, I just don't know anymore
"Marian"
By: "Sisters Of Mercy"
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A few of the digital camera manufacturers use wavelet compression for image storage,
just so you know.
Andy
Ken wrote:
> portelli wrote:
> >
> > Have a look at this page. http://www.cengines.com/cehome.htm It has s
> > really good compression engine. They show a demo of compressing a 750Kb
> > file down to 8Kb and it still looks pretty good. Check it out.
>
> Steven Pigeon who most of you know by now once worked on a project related
> to data compression. The link he gave me one time to see how well the sofware
> they developed worked left me saying wow too. I am surprised that there
> are not more products coming out now offering these advanced compression
> techniques but I suppose that with this amount of compression one must
> be careful about what they apply it to or data loss can cancel it's
> effectiveness.
>
> --
> Ken Tyler
>
> mailto://tylereng@pacbell.net
--
--------------------
"There are three men in a boat with four cigarettes but no matches.
How do they smoke??"
-The Riddler
Andrew Woodfin
UNC Charlotte Center for Precision Metrology
adw### [at] unccedu | http://www.coe.uncc.edu/~adwoodfi
--------------------
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