Upcoming developments & New applications

[Ben Lewis]

Frank,
I recently ran across an open source wavelet compression application that 
might be worth checking out:
http://www.cs.kuleuven.ac.be/~wavelets/


Ben Lewis
Advanced Technology Solutions, Inc.
Lancaster, Pennsylvania
Phone:(717)399-7007
http://www.atsincorp.com


>From: Frank Warmerdam <warmerdam at pobox.com>
>Reply-To: warmerdam at pobox.com
>CC: mapserver-users at lists.gis.umn.edu
>Subject: Re: Upcoming developments & New applications
>Date: Fri, 16 Feb 2001 16:28:57 -0500
>
>Tim Sutton wrote:
> >
> > Hi
> >
> > I think the work you are planning looks fantastic. I was just
> > wondering if there any plans afoot to support compressed
> > imagery such as MrSid or ErMapper's ECW format? I realise these are
> > proprietry formats and there may not be open specifications but it
> > can't hurt to ask can it?
> >
> > We have a couple of largish datasets in .ecw format that ould be nice
> > to be able to 'serve up'.
>
>Tim,
>
>The GDAL library doesn't currently support ECW, but I have been intending
>to add it in the future.  ERMapper does provide a free (as in no cost, but
>without source) decompression library for use on some platforms.   In the
>past MrSid has been much harder to deal with.
>
> > There is also an interesting image compression project called fiasco
> > which _is_ open source and may be a good candidate for incorporation
> > into MapServer.
>
>I looked into this briefly a few weeks ago, and found that compression was
>extremely slow, and took more than my 128MB of ram for a 512x512 image.
>Decompression was faster, but I am not sure it is "web mapping" fast.  As
>such, I am not sure how practical fiasco is.  BTW, do you have a current 
>url
>for this project?  My old one doesn't respond today.
>
>Best regards,
>
>---------------------------------------+--------------------------------------
>I set the clouds in motion - turn up   | Frank Warmerdam, 
>warmerdam at pobox.com
>light and sound - activate the windows | http://pobox.com/~warmerda
>and watch the world go round - Rush    | Geospatial Programmer for Rent




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