[Geoserver-users] Image mosaic - black background

GeoServer GeoServer User
1

Hello,
I am working with 2.4.4 on windows.
I have added an image mosaic as a datastore (several dispersed air pictures, geotiff rgb, big holes in between) and published it as a layer.

I have set the Input Transparent color to 000000 and left the Background values empty and it works very well as long as there is a part of one of the mosaicked pictures in my extent.

As soon as I pan to a region where there is no picture, all I get is a black screen.

I have gone through the archive and found some related threads but no real solution for my problem.

--
Nikolaus Pruzsinszky
Referent MIGIS

Institut für Militärisches Geowesen
Referat Datensysteme

Führungsunterstützungszentrum
Bundesministerium für Landesverteidigung und Sport
Stiftgasse 2a
1070 Wien

+43 50201 10 33134
nikolaus.pruzsinszky@anonymised.com

2

Hi Nikolaus,
Did you try to set the OutputTransparentColor too?

Please, let us know.
Cheers,
Daniele

···

==
Our support, Your Success! Visit http://opensdi.geo-solutions.it for more information.

Ing. Daniele Romagnoli
Senior Software Engineer

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

On Thu, Feb 27, 2014 at 3:29 PM, Nikolaus Pruzsinszky <Nikolaus.Pruzsinszky@anonymised.com> wrote:

Hello,
I am working with 2.4.4 on windows.
I have added an image mosaic as a datastore (several dispersed air
pictures, geotiff rgb, big holes in between) and published it as a layer.

I have set the Input Transparent color to 000000 and left the Background
values empty and it works very well as long as there is a part of one of
the mosaicked pictures in my extent.

As soon as I pan to a region where there is no picture, all I get is a
black screen.

I have gone through the archive and found some related threads but no
real solution for my problem.

–
Nikolaus Pruzsinszky
Referent MIGIS

Institut für Militärisches Geowesen
Referat Datensysteme

Führungsunterstützungszentrum
Bundesministerium für Landesverteidigung und Sport
Stiftgasse 2a
1070 Wien

+43 50201 10 33134
nikolaus.pruzsinszky@anonymised.com6397…

Flow-based real-time traffic analytics software. Cisco certified tool.
Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer
Customize your own dashboards, set traffic alerts and generate reports.
Network behavioral analysis & security monitoring. All-in-one tool.
http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk

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3

Ciao Nikolaus,
as Daniele pointed out you have the ability to play with two transparency options:

-1- Input Transparent Color
With this you can turn individual pixel on mosaic granules to transparent BEFORE mosaicking

-2- Output Transparent Color
When there areas in the mosaic that are not covered by granules you can use the background values option to set the fill value and then use the output transparent color to turn
void areas into transparent.

By default background value is 0, hence void areas are black.
Use 000000 (black) for OutputTransparentColor to make this transparent.

···

Regards,
Simone Giannecchini

Our support, Your Success! Visit http://opensdi.geo-solutions.it for more information.

Ing. Simone Giannecchini
@simogeo
Founder/Director

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 333 8128928

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

On Thu, Feb 27, 2014 at 5:03 PM, Daniele Romagnoli <daniele.romagnoli@anonymised.com> wrote:

Hi Nikolaus,
Did you try to set the OutputTransparentColor too?

Please, let us know.
Cheers,
Daniele

Flow-based real-time traffic analytics software. Cisco certified tool.
Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer
Customize your own dashboards, set traffic alerts and generate reports.
Network behavioral analysis & security monitoring. All-in-one tool.
http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk

Geoserver-users mailing list
Geoserver-users@anonymised.comsts.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geoserver-users

==
Our support, Your Success! Visit http://opensdi.geo-solutions.it for more information.

Ing. Daniele Romagnoli
Senior Software Engineer

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

On Thu, Feb 27, 2014 at 3:29 PM, Nikolaus Pruzsinszky <Nikolaus.Pruzsinszky@anonymised.com> wrote:

Hello,
I am working with 2.4.4 on windows.
I have added an image mosaic as a datastore (several dispersed air
pictures, geotiff rgb, big holes in between) and published it as a layer.

I have set the Input Transparent color to 000000 and left the Background
values empty and it works very well as long as there is a part of one of
the mosaicked pictures in my extent.

As soon as I pan to a region where there is no picture, all I get is a
black screen.

I have gone through the archive and found some related threads but no
real solution for my problem.

–
Nikolaus Pruzsinszky
Referent MIGIS

Institut für Militärisches Geowesen
Referat Datensysteme

Führungsunterstützungszentrum
Bundesministerium für Landesverteidigung und Sport
Stiftgasse 2a
1070 Wien

+43 50201 10 33134
nikolaus.pruzsinszky@anonymised.com

Flow-based real-time traffic analytics software. Cisco certified tool.
Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer
Customize your own dashboards, set traffic alerts and generate reports.
Network behavioral analysis & security monitoring. All-in-one tool.
http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk

Geoserver-users mailing list
Geoserver-users@lists.sourceforge.net
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4

Thanks Simone,

somehow, I never really understood how those three parameters work together. Thank you for the explanation. works great.
Still, it is quite annoying to have to remove changed layers from layer groups and the again add them to make such changes visible in the layer groups. But that’s another story.

Regards, Niko

Quoting Simone Giannecchini simone.giannecchini@anonymised.com:

Ciao Nikolaus,
as Daniele pointed out you have the ability to play with two transparency
options:

-1- Input Transparent Color
With this you can turn individual pixel on mosaic granules to transparent
BEFORE mosaicking

-2- Output Transparent Color
When there areas in the mosaic that are not covered by granules you can use
the background values option to set the fill value and then use the output
transparent color to turn
void areas into transparent.

By default background value is 0, hence void areas are black.
Use 000000 (black) for OutputTransparentColor to make this transparent.

Regards,
Simone Giannecchini

Our support, Your Success! Visit http://opensdi.geo-solutions.it for more
information.

Ing. Simone Giannecchini
@simogeo
Founder/Director

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 333 8128928

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

On Thu, Feb 27, 2014 at 5:03 PM, Daniele Romagnoli <
daniele.romagnoli@anonymised.com> wrote:

Hi Nikolaus,
Did you try to set the OutputTransparentColor too?

Please, let us know.
Cheers,
Daniele

==
Our support, Your Success! Visit http://opensdi.geo-solutions.it for more
information.

Ing. Daniele Romagnoli
Senior Software Engineer

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

On Thu, Feb 27, 2014 at 3:29 PM, Nikolaus Pruzsinszky <
Nikolaus.Pruzsinszky@anonymised.com> wrote:

Hello,
I am working with 2.4.4 on windows.
I have added an image mosaic as a datastore (several dispersed air
pictures, geotiff rgb, big holes in between) and published it as a layer.

I have set the Input Transparent color to 000000 and left the Background
values empty and it works very well as long as there is a part of one of
the mosaicked pictures in my extent.

As soon as I pan to a region where there is no picture, all I get is a
black screen.

I have gone through the archive and found some related threads but no
real solution for my problem.

–
Nikolaus Pruzsinszky
Referent MIGIS

Institut für Militärisches Geowesen
Referat Datensysteme

Führungsunterstützungszentrum
Bundesministerium für Landesverteidigung und Sport
Stiftgasse 2a
1070 Wien

+43 50201 10 33134
nikolaus.pruzsinszky@anonymised.com

Flow-based real-time traffic analytics software. Cisco certified tool.
Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer
Customize your own dashboards, set traffic alerts and generate reports.
Network behavioral analysis & security monitoring. All-in-one tool.

http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk

Geoserver-users mailing list
Geoserver-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geoserver-users

Flow-based real-time traffic analytics software. Cisco certified tool.
Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer
Customize your own dashboards, set traffic alerts and generate reports.
Network behavioral analysis & security monitoring. All-in-one tool.

http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk

Geoserver-users mailing list
Geoserver-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geoserver-users

–
Die elektronische DKIM-Signatur die der absendende Mailserver der Nachricht beigefügt hat, konnte erfolgreich verifiziert werden. Damit ist sichergestellt, dass diese Mail tatsächlich aus der Domaene von mail-ve0-f169.google.com gesendet wurde.

–
Nikolaus Pruzsinszky
Referent Geoinformationssysteme
Institut für militärisches Geowesen
Führungsunterstützungszentrum
Stiftgasse 2a
1070 Wien
mailto:nikolaus.pruzsinszky@anonymised.com
+43 50201 1033134

5

Hello Nikolaus,

In my work I think I had similar problem. I had 8-bit mosaic and set Background Value as 255 (it was white color number in 8-bit pallete I think), inputTransparent color as FFFFFF and outputtransparentcolor to FFFFFF. In this way I had white background which was converted on output to transparency. You could try similar solution.

W dniu 2014-02-27 15:29, Nikolaus Pruzsinszky pisze:

Hello,
I am working with 2.4.4 on windows.
I have added an image mosaic as a datastore (several dispersed air
pictures, geotiff rgb, big holes in between) and published it as a layer.

I have set the Input Transparent color to 000000 and left the Background
values empty and it works very well as long as there is a part of one of
the mosaicked pictures in my extent.

As soon as I pan to a region where there is no picture, all I get is a
black screen.

I have gone through the archive and found some related threads but no
real solution for my problem.

6

On Fri, Feb 28, 2014 at 7:16 AM, Nikolaus Pruzsinszky <
Nikolaus.Pruzsinszky@anonymised.com> wrote:

Thanks Simone,

somehow, I never really understood how those three parameters work
together. Thank you for the explanation. works great.
Still, it is quite annoying to have to remove changed layers from layer
groups and the again add them to make such changes visible in the layer
groups. But that's another story.

This is odd, a layer group is nothing but an alias for a layer list, so
changes should be immediately visible to WMS.
Unless.. are you using tile caching?

Cheers
Andrea

--
== Our support, Your Success! Visit http://opensdi.geo-solutions.it for
more information ==

Ing. Andrea Aime
@geowolf
Technical Lead

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 339 8844549

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

-------------------------------------------------------

7

No, I don't use caching (in that case), but I have experienced that behaviour with earlier versions too (2.3.x).

Regards, Niko

Zitat von Andrea Aime <andrea.aime@anonymised.com>:

On Fri, Feb 28, 2014 at 7:16 AM, Nikolaus Pruzsinszky <
Nikolaus.Pruzsinszky@anonymised.com> wrote:

Thanks Simone,

somehow, I never really understood how those three parameters work
together. Thank you for the explanation. works great.
Still, it is quite annoying to have to remove changed layers from layer
groups and the again add them to make such changes visible in the layer
groups. But that's another story.

This is odd, a layer group is nothing but an alias for a layer list, so
changes should be immediately visible to WMS.
Unless.. are you using tile caching?

Cheers
Andrea

--
== Our support, Your Success! Visit http://opensdi.geo-solutions.it for
more information ==

Ing. Andrea Aime
@geowolf
Technical Lead

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 339 8844549

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

-------------------------------------------------------
--
Die elektronische DKIM-Signatur die der absendende Mailserver der Nachricht beigefügt hat, konnte erfolgreich verifiziert werden. Damit ist sichergestellt, dass diese Mail tatsächlich aus der Domaene von mail-ob0-f176.google.com gesendet wurde.

--
Nikolaus Pruzsinszky
Referent Geoinformationssysteme
Institut für militärisches Geowesen
Führungsunterstützungszentrum
Stiftgasse 2a
1070 Wien
mailto:nikolaus.pruzsinszky@anonymised.com
+43 50201 1033134