[Geoserver-devel] png8 + alpha support landed on trunk

GeoServer GeoServer Developer
1

Hi,
managed to complete the work started in December 2011 to get a PNG8
output supporting translucency, just committed it on trunk.

The defaults are setup so that you get it automatically the moment you ask
for png8 + transparent output, but if you want to force it also in a opaque image
(in some cases it gives better output) you can use &format_options=quantizer:mediancut
(the new vendor parameter has been added to the documentation)

I’ve tried it out with a number of datasets and with GWC too, seems to be working
as advertised.
Well, give it a kick and let me know if it works for you too

Cheers
Andrea

–

Ing. Andrea Aime
GeoSolutions S.A.S.
Tech lead

Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy

phone: +39 0584 962313
fax: +39 0584 962313
mob: +39 339 8844549

http://www.geo-solutions.it
http://geo-solutions.blogspot.com/
http://www.youtube.com/user/GeoSolutionsIT
http://www.linkedin.com/in/andreaaime
http://twitter.com/geowolf

2

Awesome stuff. Nice work Andrea.

On Thu, Apr 19, 2012 at 11:29 PM, Andrea Aime <andrea.aime@anonymised.com> wrote:

Hi,
managed to complete the work started in December 2011 to get a PNG8
output supporting translucency, just committed it on trunk.

The defaults are setup so that you get it automatically the moment you ask
for png8 + transparent output, but if you want to force it also in a opaque image
(in some cases it gives better output) you can use &format_options=quantizer:mediancut
(the new vendor parameter has been added to the documentation)

I’ve tried it out with a number of datasets and with GWC too, seems to be working
as advertised.
Well, give it a kick and let me know if it works for you too

Cheers
Andrea

–

Ing. Andrea Aime
GeoSolutions S.A.S.
Tech lead

Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy

phone: +39 0584 962313
fax: +39 0584 962313
mob: +39 339 8844549

http://www.geo-solutions.it
http://geo-solutions.blogspot.com/
http://www.youtube.com/user/GeoSolutionsIT
http://www.linkedin.com/in/andreaaime
http://twitter.com/geowolf

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Justin Deoliveira
OpenGeo - http://opengeo.org
Enterprise support for open source geospatial.