What's the best OUTPUTFORMAT for ECW-files using WMS

Steven De Vriendt gisaalter at GMAIL.COM
Mon Apr 23 01:25:25 PDT 2007


Thanks Bart, I've tried using JPEG but I'm losing a lot
of quality on my images. The files I'd like to serve
are aerial images and I'd love to keep the quality as
good as I can. Seems like I'll have to pick quality above
performance.
Thanks for your advice !

Steven



On 4/23/07, Bart van den Eijnden (OSGIS) <bartvde at osgis.nl> wrote:
> If your layers are only backgrounds and don't need transparency, I would
> suggest JPEG.
>
> If you need more than 256 colours and transparency, you will need PNG24 like
> you are using now but the images get pretty big unfortunately, which is a
> disadvantage.
>
> Best regards,
> Bart
>
> --
> Bart van den Eijnden
> OSGIS, Open Source GIS
> http://www.osgis.nl
>
>
> --------- Oorspronkelijk bericht --------
> Van: Steven De Vriendt <gisaalter at GMAIL.COM>
> Naar: MAPSERVER-USERS at LISTS.UMN.EDU <MAPSERVER-USERS at LISTS.UMN.EDU>
> Onderwerp: [UMN_MAPSERVER-USERS] What's the best OUTPUTFORMAT for ECW-files
> using WMS
> Datum: 23/04/07 05:52
>
> > I have about 50 ECW-files which I like
> > to serve via WMS.
> >
> > I'm using following OUTPUTFORMAT:
> >
> > OUTPUTFORMAT
> > NAME PNG24
> >  DRIVER "GD/PNG"
> > MIMETYPE "image/png"
> > EXTENSION PNG
> > FORMATOPTION "INTERLACE=OFF"
> > IMAGEMODE RGBA
> > TRANSPARENT ON
> > END
> >
> > Image quality is good, but the performance is not what I'd like it to be.
> > Can anyone help me adjusting these parameters ?
> >
> > thanks
> > Steven
> >
> >
>
>
>
>



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