[Geoserver-users] Problems rendering 16Int GeoTiffs

Hi all,

I'm having rendering problems using the RasterSymbolizer on my dataset.
My dataset consist of 113 GeoTiff files of 130MB each with Int16 values inside.
I have a shapefile for the tileindex and I'm using the ImageMosaic - plugin

So far, I can create the CoverageStore and Coverage, the layer is added, the bounds are correct, I can see the image using the links
on the demo page, but the images that are returned from the WMS has vertical and horizontal stripes through it ( white colored ). These stripes
are not on fixed locations, if I zoom in some disappear, some appear ... all the stripes are varying in thickness as I zoom in and out.

The problem is there is you make a raw WMS request as well as in every app ( google earth, openlayers, QGis )

When I load the image tiles in QGis, so locally from the disk, the images tiles are represented correctly, also the shape file has the correct geometries inside as I can
see when I load it in QGis.

These problem also appear when I'm using the default SLD "raster", so I suppose the problem is not the SLD I'm using.

I'm using version 1.7.2

Here's the gdalinfo output of one of my tiles:

Driver: GTiff/GeoTIFF
Files: /mnt/data_uav1/DMT_GREY_PROTO/box_580_5657.tiff
Size is 8000, 8000
Coordinate System is:
PROJCS["UTM Zone 31, Northern Hemisphere",
    GEOGCS["GRS 1980(IUGG, 1980)",
        DATUM["unknown",
            SPHEROID["unnamed",6378137,298.2572221010042]],
        PRIMEM["Greenwich",0],
        UNIT["degree",0.0174532925199433]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",3],
    PARAMETER["scale_factor",0.9996],
    PARAMETER["false_easting",500000],
    PARAMETER["false_northing",0],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]]]
Origin = (580000.000000000000000,5664999.000000000000000)
Pixel Size = (1.000000000000000,-1.000000000000000)
Metadata:
  AREA_OR_POINT=Area
Image Structure Metadata:
  INTERLEAVE=BAND
Corner Coordinates:
Upper Left ( 580000.000, 5664999.000)
Lower Left ( 580000.000, 5656999.000)
Upper Right ( 588000.000, 5664999.000)
Lower Right ( 588000.000, 5656999.000)
Center ( 584000.000, 5660999.000)
Band 1 Block=256x256 Type=Int16, ColorInterp=Gray
  Overviews: 4000x4000, 2000x2000, 1000x1000, 500x500, 250x250, 125x125

The properties files that is next to the shapefile:

Name=dmt_original_values_proto
Levels=1.0,1.0 2.0,2.0 4.0,4.0 8.0,8.0 16.0,16.0 32.0,32.0 64.0,64.0
LevelsNum=7
Envelope2D=436000,5648999 610000,5736999
NumFiles=113

Regards,
Stephen

---
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Ciao Stephen,
can you share the SLD you are using as well as a small portion of your
dataset so that I can reproduce the problem locally?
I can provide you with the address of our ftp site.

Simone.
-------------------------------------------------------
Ing. Simone Giannecchini
GeoSolutions S.A.S.
Owner - Software Engineer
Via Carignoni 51
55041 Camaiore (LU)
Italy

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

http://www.geo-solutions.it
http://simboss.blogspot.com/
http://www.linkedin.com/in/simonegiannecchini

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

On Tue, Mar 10, 2009 at 11:06 AM, Kempenaers Stephen
<stephen.kempenaers@anonymised.com> wrote:

Hi all,

I'm having rendering problems using the RasterSymbolizer on my dataset.
My dataset consist of 113 GeoTiff files of 130MB each with Int16 values inside.
I have a shapefile for the tileindex and I'm using the ImageMosaic - plugin

So far, I can create the CoverageStore and Coverage, the layer is added, the bounds are correct, I can see the image using the links
on the demo page, but the images that are returned from the WMS has vertical and horizontal stripes through it ( white colored ). These stripes
are not on fixed locations, if I zoom in some disappear, some appear ... all the stripes are varying in thickness as I zoom in and out.

The problem is there is you make a raw WMS request as well as in every app ( google earth, openlayers, QGis )

When I load the image tiles in QGis, so locally from the disk, the images tiles are represented correctly, also the shape file has the correct geometries inside as I can
see when I load it in QGis.

These problem also appear when I'm using the default SLD "raster", so I suppose the problem is not the SLD I'm using.

I'm using version 1.7.2

Here's the gdalinfo output of one of my tiles:

Driver: GTiff/GeoTIFF
Files: /mnt/data_uav1/DMT_GREY_PROTO/box_580_5657.tiff
Size is 8000, 8000
Coordinate System is:
PROJCS["UTM Zone 31, Northern Hemisphere",
GEOGCS["GRS 1980(IUGG, 1980)",
DATUM["unknown",
SPHEROID["unnamed",6378137,298.2572221010042]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433]],
PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",0],
PARAMETER["central_meridian",3],
PARAMETER["scale_factor",0.9996],
PARAMETER["false_easting",500000],
PARAMETER["false_northing",0],
UNIT["metre",1,
AUTHORITY["EPSG","9001"]]]
Origin = (580000.000000000000000,5664999.000000000000000)
Pixel Size = (1.000000000000000,-1.000000000000000)
Metadata:
AREA_OR_POINT=Area
Image Structure Metadata:
INTERLEAVE=BAND
Corner Coordinates:
Upper Left ( 580000.000, 5664999.000)
Lower Left ( 580000.000, 5656999.000)
Upper Right ( 588000.000, 5664999.000)
Lower Right ( 588000.000, 5656999.000)
Center ( 584000.000, 5660999.000)
Band 1 Block=256x256 Type=Int16, ColorInterp=Gray
Overviews: 4000x4000, 2000x2000, 1000x1000, 500x500, 250x250, 125x125

The properties files that is next to the shapefile:

Name=dmt_original_values_proto
Levels=1.0,1.0 2.0,2.0 4.0,4.0 8.0,8.0 16.0,16.0 32.0,32.0 64.0,64.0
LevelsNum=7
Envelope2D=436000,5648999 610000,5736999
NumFiles=113

Regards,
Stephen

---
This e-mail, any attachments and the information it contains are confidential and meant only for the use of the addressee(s) only. Access to this e-mail by anyone other than the addressee(s) is unauthorized. If you are not the intended addressee (or responsible for delivery of the message to such person), you may not use, copy, distribute or deliver to anyone this message (or any part of its contents) or take any action in reliance on it. In such case, you should destroy this message and notify the sender immediately. If you have received this e-mail in error, please notify us immediately by e-mail or telephone and delete the e-mail from any computer.
All reasonable precautions have been taken to ensure no viruses are present in this e-mail and its attachments. As our company cannot accept responsibility for any loss or damage arising from the use of this e-mail or attachments we recommend that you subject these to your virus checking procedures prior to use.

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