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| GeoCommunity Mailing List |
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| Subject: | RE: [gislist] Seeking Opinions on Lizardtech's MrSID |
| Date: |
11/10/2003 03:20:01 PM |
| From: |
Karen Morley |
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having been lured into chiming in, given that Clive responded for ECW...
MrSID supports many things that ECW does not, including mathematically =
lossless compression, tile updating, mosaicking compressed imagery and =
the new functionality including recompressing (optimization) resampling =
and cropping on the fly, plus a user interface that virtually anyone can =
use, not just an image analyst.
Additionally MrSID is the most widely supported wavelet compression =
format, available natively in almost every CAD and GIS package in the =
world. A file format so widely supported hardly represents something =
being "held hostage" as you put it. No need for unsupported plugins =
that require IT permissions to deploy.
Finally, Jpeg2000 will have a future but for some time to come, there =
are a lot of folks invested in an existing workflow and format, not to =
mention waiting for vendor applications to support it. Lizardtech is =
uniquely in the position to support this industry in a much more robust =
fashion than any of our so-called competitors. As a new member of OGC =
we are demonstrating our commitment to open standards (not open source) =
for interoperability throughout the industry. Plus we are not promising =
something we have yet to deliver such as competitors that pre-announce =
slide-ware and have yet to deliver on products due in Q3.
I am no doubt fanning the flames but I stand behind our superior =
technology, ability to support it and leadership in the market going =
forward.
-Karen Morley
-----Original Message-----
From: Dimitri Rotow [mailto:dar@manifold.net]
Sent: Friday, November 07, 2003 1:07 PM
To: Sonny Parafina: gislist@lists.thinkburst.com
Subject: RE: [gislist] Seeking Opinions on Lizardtech's MrSID
>
> Why is ECW the only choice? Wouldn't moving to another vendor
> implementation of wavelet compression put users at risk again?
>
> Why not JPEG200 (JP2), which is based on an ISO standard? Leica/Erdas =
is
> supporting JP2 and Mapping Science has put out GeoJP2.
>
Good points, but I think ECW is still a really open way to go. =
ERMapper's
making source code available is a very strong, confident move that shows
they are not afraid of opening ECW to developers, source code and all.
Plus, their support for JP2 within the SDK shows they are not afraid of
giving people an open choice of whatever they want to use in a "can't =
lose"
proposition. It's hard to think up a better alternative than having =
your
cake and eating it too.
Could it be that in the future JP2 will emerge as a preferred standard?
Well, maybe. But until then there is lots of image work to be done that
needs very robust, highly evolved, highly reliable code and if you are a
developer who needs to guarantee to his customers an advanced, proven
solution that is today well supported throughout the industry and =
already
integrated with image web servers, it makes sense to go with ECW, which =
has
a rock-solid code base. If that is displaced in the future by something
else, fine - we can all use it to our advantage.
By the way, I don't have any financial interest in this other than =
wanting
to see a good, open format for our users and wanting to avoid the
engineering expense of re-inventing the wheel.
Cheers,
Dimitri
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