[Geoserver-users] High Resolution Imagery in Low Resolution ImageMosaics

GeoServer GeoServer User
1

Hello,

I am attempting to get high resolution imagery mosaiced with lower
resolution imagery. For example, 1 GeoTIFF that is high level/low quality
world map, with 1 GeoTIFF that is very fine detail in a certain area, say
over weather formation. I know this is possible using layer groups and
seperate WMS calls, but am attempting to make this work in the ImageMosaic
plugin.

After looking through the mailing lists, the geotools user guide and the
ImageMosaicReader code itself, it does not appear as though GeoServer
supports high resolution imagery in low resolution imagery.

It appears that the resolution levels (in the .properties file) are there
for different internal overviews/pyramid levels. Can anyone confirm or deny
this?

Also, is there a GIS best practice for this type of task? Do people
typically do the layer groups, or have a composite GeoTIFF that's set to the
resolution of the highest resolution piece?

Thanks,
-Sam
--
View this message in context: http://www.nabble.com/High-Resolution-Imagery-in-Low-Resolution-ImageMosaics-tp16826267p16826267.html
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2

Ciao Samuel,
I do not have clearly understood what you are trying to achieve, could
you please firther clarify?

As far as the ImageMosaic is concerned, it's resolution levels are
used to map the same set of image with differen resolutions.
Of course we can strecth this a bit, especially if you look at the
pyramid reader instead of the mosaic reader. You could then build a
pyramid where each level comprises a mosaic built using a set of
images (even 1 image only) which is completely different from the
other levels, assuming they still covera the same area.

Simone.

On Wed, Apr 23, 2008 at 12:08 AM, SamuelToepke <SToepke@anonymised.com> wrote:

Hello,

I am attempting to get high resolution imagery mosaiced with lower
resolution imagery. For example, 1 GeoTIFF that is high level/low quality
world map, with 1 GeoTIFF that is very fine detail in a certain area, say
over weather formation. I know this is possible using layer groups and
seperate WMS calls, but am attempting to make this work in the ImageMosaic
plugin.

After looking through the mailing lists, the geotools user guide and the
ImageMosaicReader code itself, it does not appear as though GeoServer
supports high resolution imagery in low resolution imagery.

It appears that the resolution levels (in the .properties file) are there
for different internal overviews/pyramid levels. Can anyone confirm or deny
this?

Also, is there a GIS best practice for this type of task? Do people
typically do the layer groups, or have a composite GeoTIFF that's set to the
resolution of the highest resolution piece?

Thanks,
-Sam
--
View this message in context: http://www.nabble.com/High-Resolution-Imagery-in-Low-Resolution-ImageMosaics-tp16826267p16826267.html
Sent from the GeoServer - User mailing list archive at Nabble.com.

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-------------------------------------------------------
Eng. Simone Giannecchini
President /CEO GeoSolutions S.A.S.
Via Carignoni 51
55041 Camaiore (LU)
Italy

phone: +39 0584983027
fax: +39 0584983027
mob: +39 333 8128928

http://www.geo-solutions.it

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

3

Hi Simone,

I've attached two .tgz files:
mosaicdiffres.tgz: A mosaic that contains two images of different
resolution. The mosaic is successfully created with gdaltindex. When loaded
into GeoServer, the mosaic looks incorrect.

mosaicsameres.tgz. A mosaic that contains two images of the same resolution.
The mosaic is successfully created with gdaltindex. When loaded into
GeoServer, the mosaic works properly. This is a 'control' example.

I'm trying to use GeoTools and GeoServer to make an ImageMosaic of images
that have different resolutions, and to have it display properly in
GeoServer.

http://www.nabble.com/file/p17065743/mosaicdiffres.tgz mosaicdiffres.tgz
http://www.nabble.com/file/p17065743/mosaicsameres.tgz mosaicsameres.tgz

Thanks,
-Sam

Simone.Giannecchini wrote:

Ciao Samuel,
I do not have clearly understood what you are trying to achieve, could
you please firther clarify?

As far as the ImageMosaic is concerned, it's resolution levels are
used to map the same set of image with differen resolutions.
Of course we can strecth this a bit, especially if you look at the
pyramid reader instead of the mosaic reader. You could then build a
pyramid where each level comprises a mosaic built using a set of
images (even 1 image only) which is completely different from the
other levels, assuming they still covera the same area.

Simone.

On Wed, Apr 23, 2008 at 12:08 AM, SamuelToepke <SToepke@anonymised.com>
wrote:

Hello,

I am attempting to get high resolution imagery mosaiced with lower
resolution imagery. For example, 1 GeoTIFF that is high level/low
quality
world map, with 1 GeoTIFF that is very fine detail in a certain area,
say
over weather formation. I know this is possible using layer groups and
seperate WMS calls, but am attempting to make this work in the
ImageMosaic
plugin.

After looking through the mailing lists, the geotools user guide and the
ImageMosaicReader code itself, it does not appear as though GeoServer
supports high resolution imagery in low resolution imagery.

It appears that the resolution levels (in the .properties file) are
there
for different internal overviews/pyramid levels. Can anyone confirm or
deny
this?

Also, is there a GIS best practice for this type of task? Do people
typically do the layer groups, or have a composite GeoTIFF that's set to
the
resolution of the highest resolution piece?

Thanks,
-Sam
--
View this message in context:
http://www.nabble.com/High-Resolution-Imagery-in-Low-Resolution-ImageMosaics-tp16826267p16826267.html
Sent from the GeoServer - User mailing list archive at Nabble.com.

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

--
-------------------------------------------------------
Eng. Simone Giannecchini
President /CEO GeoSolutions S.A.S.
Via Carignoni 51
55041 Camaiore (LU)
Italy

phone: +39 0584983027
fax: +39 0584983027
mob: +39 333 8128928

http://www.geo-solutions.it

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

-------------------------------------------------------------------------
This SF.net email is sponsored by the 2008 JavaOne(SM) Conference
Don't miss this year's exciting event. There's still time to save $100.
Use priority code J8TL2D2.
http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
_______________________________________________
Geoserver-users mailing list
Geoserver-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geoserver-users

--
View this message in context: http://www.nabble.com/High-Resolution-Imagery-in-Low-Resolution-ImageMosaics-tp16826267p17065743.html
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4

Ciao Samuel,
I wanted to give a try to your test data but I am getting corrupted archives.
If you can contact me off list, I can give you some ftp details where
you can do the upload.

Simone.
On Mon, May 5, 2008 at 6:41 PM, SamuelToepke <SToepke@anonymised.com> wrote:

Hi Simone,

I've attached two .tgz files:
mosaicdiffres.tgz: A mosaic that contains two images of different
resolution. The mosaic is successfully created with gdaltindex. When loaded
into GeoServer, the mosaic looks incorrect.

mosaicsameres.tgz. A mosaic that contains two images of the same resolution.
The mosaic is successfully created with gdaltindex. When loaded into
GeoServer, the mosaic works properly. This is a 'control' example.

I'm trying to use GeoTools and GeoServer to make an ImageMosaic of images
that have different resolutions, and to have it display properly in
GeoServer.

http://www.nabble.com/file/p17065743/mosaicdiffres.tgz mosaicdiffres.tgz
http://www.nabble.com/file/p17065743/mosaicsameres.tgz mosaicsameres.tgz

Thanks,
-Sam

Simone.Giannecchini wrote:

Ciao Samuel,
I do not have clearly understood what you are trying to achieve, could
you please firther clarify?

As far as the ImageMosaic is concerned, it's resolution levels are
used to map the same set of image with differen resolutions.
Of course we can strecth this a bit, especially if you look at the
pyramid reader instead of the mosaic reader. You could then build a
pyramid where each level comprises a mosaic built using a set of
images (even 1 image only) which is completely different from the
other levels, assuming they still covera the same area.

Simone.

On Wed, Apr 23, 2008 at 12:08 AM, SamuelToepke <SToepke@anonymised.com>
wrote:

Hello,

I am attempting to get high resolution imagery mosaiced with lower
resolution imagery. For example, 1 GeoTIFF that is high level/low
quality
world map, with 1 GeoTIFF that is very fine detail in a certain area,
say
over weather formation. I know this is possible using layer groups and
seperate WMS calls, but am attempting to make this work in the
ImageMosaic
plugin.

After looking through the mailing lists, the geotools user guide and the
ImageMosaicReader code itself, it does not appear as though GeoServer
supports high resolution imagery in low resolution imagery.

It appears that the resolution levels (in the .properties file) are
there
for different internal overviews/pyramid levels. Can anyone confirm or
deny
this?

Also, is there a GIS best practice for this type of task? Do people
typically do the layer groups, or have a composite GeoTIFF that's set to
the
resolution of the highest resolution piece?

Thanks,
-Sam
--
View this message in context:
http://www.nabble.com/High-Resolution-Imagery-in-Low-Resolution-ImageMosaics-tp16826267p16826267.html
Sent from the GeoServer - User mailing list archive at Nabble.com.

-------------------------------------------------------------------------
This SF.net email is sponsored by the 2008 JavaOne(SM) Conference
Don't miss this year's exciting event. There's still time to save $100.
Use priority code J8TL2D2.

http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
_______________________________________________
Geoserver-users mailing list
Geoserver-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geoserver-users

--
-------------------------------------------------------
Eng. Simone Giannecchini
President /CEO GeoSolutions S.A.S.
Via Carignoni 51
55041 Camaiore (LU)
Italy

phone: +39 0584983027
fax: +39 0584983027
mob: +39 333 8128928

http://www.geo-solutions.it

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

-------------------------------------------------------------------------
This SF.net email is sponsored by the 2008 JavaOne(SM) Conference
Don't miss this year's exciting event. There's still time to save $100.
Use priority code J8TL2D2.
http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
_______________________________________________
Geoserver-users mailing list
Geoserver-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geoserver-users

--
View this message in context: http://www.nabble.com/High-Resolution-Imagery-in-Low-Resolution-ImageMosaics-tp16826267p17065743.html
Sent from the GeoServer - User mailing list archive at Nabble.com.

-------------------------------------------------------------------------
This SF.net email is sponsored by the 2008 JavaOne(SM) Conference
Don't miss this year's exciting event. There's still time to save $100.
Use priority code J8TL2D2.
http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
_______________________________________________
Geoserver-users mailing list
Geoserver-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geoserver-users

--
-------------------------------------------------------
Eng. Simone Giannecchini
President /CEO GeoSolutions S.A.S.
Via Carignoni 51
55041 Camaiore (LU)
Italy

phone: +39 0584983027
fax: +39 0584983027
mob: +39 333 8128928

http://www.geo-solutions.it

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