All,
I am not sure if I should publish this question / issue in geoserver-user group
or this one. In the doubt, I have posted in both.
We are hoping to publish some 16Bits Multi-bands (10 bands) GeoTiff - Earth
Observation Dataset Sentinel2. We have some major issue making transparent the
"nodata" area available in the GeoTIFF
The idea is to apply a range of SLD (e.g. true colour, false colour). Each SLD
we apply makes the most of the channel selection along with some
ContrastEnhancement. Note, we need to need to publish the full GeoTiff as
opposed to pre-process the dataset off line. We will need to allow the WCS to
run of the full GeoTiff as opposed to a simplified RGB GeoTiff.
The channel selection and the ContrastEnhancement work well. However, we have
now exhausted all avenues to make the no data area transparent.
Our approach is similar to the one employed by Simone Giannecchini -
http://blog.geoserver.org/2008/12/18/raster-symbolizer-tips-tricks-part-2/. We
understand that this approach was successful and the post, it is also mentioned
a sample file (EmissiveCampania.tif); it would be great if we could get access
to it as a mean to compare with our data.
We have tried a number of options
* Apply specific nodata value, but so far not luck (gdalwarp -srcnodata
255 -dstalpha input.tif output.tif) - as per reported here
http://osgeo-org.1560.x6.nabble.com/10-bands-geotiff-16-bits-handling-transparency-for-no-data-tc5354305.html
* set an InputTransparentColor to a layer - but this throw an error as
per reported here
http://osgeo-org.1560.x6.nabble.com/Unsupported-data-type-when-using-a-transparent-color-td5261925.html
For information, I am including below some information on the file, GeoServer
version and the SLD being used.
Any help would be greatly appreciated from the GeoServer community.
Regards,
Pascal
#################################################
GDLAINFO (note that I am only including the first two bands for economy.)
Driver: GTiff/GeoTIFF
Files: test_16b.tif
Size is 10818, 11120
Coordinate System is:
PROJCS["OSGB 1936 / British National Grid",
GEOGCS["OSGB 1936",
DATUM["OSGB_1936",
SPHEROID["Airy 1830",6377563.396,299.3249646,
AUTHORITY["EPSG","7001"]],
TOWGS84[446.448,-125.157,542.06,0.15,0.247,0.842,-20.489],
AUTHORITY["EPSG","6277"]],
PRIMEM["Greenwich",0,
AUTHORITY["EPSG","8901"]],
UNIT["degree",0.0174532925199433,
AUTHORITY["EPSG","9122"]],
AUTHORITY["EPSG","4277"]],
PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",49],
PARAMETER["central_meridian",-2],
PARAMETER["scale_factor",0.9996012717],
PARAMETER["false_easting",400000],
PARAMETER["false_northing",-100000],
UNIT["metre",1,
AUTHORITY["EPSG","9001"]],
AXIS["Easting",EAST],
AXIS["Northing",NORTH],
AUTHORITY["EPSG","27700"]]
Origin = (430590.000000000000000,171580.000000000000000)
Pixel Size = (10.000000000000000,-10.000000000000000)
Metadata:
AREA_OR_POINT=Area
Image Structure Metadata:
COMPRESSION=LZW
INTERLEAVE=PIXEL
Corner Coordinates:
Upper Left ( 430590.000, 171580.000) ( 1d33'35.35"W, 51d26'30.82"N)
Lower Left ( 430590.000, 60380.000) ( 1d34' 8.98"W, 50d26'30.70"N)
Upper Right ( 538770.000, 171580.000) ( 0d 0'13.54"W, 51d25'32.60"N)
Lower Right ( 538770.000, 60380.000) ( 0d 2'45.96"W, 50d25'34.51"N)
Center ( 484680.000, 115980.000) ( 0d47'40.99"W, 50d56'11.37"N)
Band 1 Block=256x256 Type=UInt16, ColorInterp=Gray
Description = Blue
Min=1.000 Max=2459.000
Minimum=1.000, Maximum=2459.000, Mean=93.234, StdDev=155.846
NoData Value=0
Overviews: 2704x2780, 1352x1390, 676x695, 338x347, 169x173
Metadata:
ATTRIBUTETABLE_CHUNKSIZE=1000
LAYER_TYPE=athematic
STATISTICS_EXCLUDEDVALUES=0
STATISTICS_HISTOBINFUNCTION=linear
STATISTICS_HISTOBINVALUES=313|132138|3218980|10696252|15875437|9418712|4137267|2396392|1547224|1319819|871921|689650|480895|312188|275321|206391|202031|179196|147838|154172|132337|139280|133389|114713|123262|107450|116572|112379|98792|107788|94840|102595|99792|88529|95852|85074|93346|91822|81827|88194|78309|85110|84842|75079|82032|72224|80071|78713|70615|76875|68391|75817|74871|66010|72996|64896|71879|71538|62797|68936|61109|67659|66478|58752|64310|56529|62350|61532|54160|59564|52071|56460|55200|48656|52824|47359|50917|49391|43434|47113|40748|43910|42092|36596|38981|33993|36364|34556|29897|31995|27534|29271|28404|24645|25379|21550|23349|22269|19231|20164|17231|18340|17206|14342|15165|12766|13492|12568|10726|11399|9455|10083|9439|7950|8030|6767|7090|6674|5325|5575|4498|4556|4183|3471|3452|2981|2973|2645|2283|2214|2081|1714|1723|1266|1363|1162|920|907|674|737|646|527|547|389|409|332|260|233|170|185|148|112|80|66|61|58|33|27|19|7|1|4|5|5|1|3|2|4|3|3|2|2|4|3|2|0|6|5|3|1|7|3|1|2|5|2|9|0|1|3|1|1|2|1|2|3|3|1|2|1|3|1|3|0|0|2|2|2|4|1|2|2|0|2|3|0|4|2|4|0|0|0|1|3|0|2|5|1|0|0|1|0|1|0|0|1|0|0|0|0|0|0|0|1|0|0|0|0|0|0|0|0|0|0|0|1
STATISTICS_HISTOMAX=2459
STATISTICS_HISTOMIN=1
STATISTICS_HISTONUMBINS=256
STATISTICS_MAXIMUM=2459
STATISTICS_MEAN=93.23404507260453
STATISTICS_MEDIAN=39.40625
STATISTICS_MINIMUM=1
STATISTICS_MODE=39.40625
STATISTICS_STDDEV=155.8464802192733
Driver: GTiff/GeoTIFF
Files: test_16b.tif
Size is 10818, 11120
Coordinate System is:
PROJCS["OSGB 1936 / British National Grid",
GEOGCS["OSGB 1936",
DATUM["OSGB_1936",
SPHEROID["Airy 1830",6377563.396,299.3249646,
AUTHORITY["EPSG","7001"]],
TOWGS84[446.448,-125.157,542.06,0.15,0.247,0.842,-20.489],
AUTHORITY["EPSG","6277"]],
PRIMEM["Greenwich",0,
AUTHORITY["EPSG","8901"]],
UNIT["degree",0.0174532925199433,
AUTHORITY["EPSG","9122"]],
AUTHORITY["EPSG","4277"]],
PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",49],
PARAMETER["central_meridian",-2],
PARAMETER["scale_factor",0.9996012717],
PARAMETER["false_easting",400000],
PARAMETER["false_northing",-100000],
UNIT["metre",1,
AUTHORITY["EPSG","9001"]],
AXIS["Easting",EAST],
AXIS["Northing",NORTH],
AUTHORITY["EPSG","27700"]]
Origin = (430590.000000000000000,171580.000000000000000)
Pixel Size = (10.000000000000000,-10.000000000000000)
Metadata:
AREA_OR_POINT=Area
Image Structure Metadata:
COMPRESSION=LZW
INTERLEAVE=PIXEL
Corner Coordinates:
Upper Left ( 430590.000, 171580.000) ( 1d33'35.35"W, 51d26'30.82"N)
Lower Left ( 430590.000, 60380.000) ( 1d34' 8.98"W, 50d26'30.70"N)
Upper Right ( 538770.000, 171580.000) ( 0d 0'13.54"W, 51d25'32.60"N)
Lower Right ( 538770.000, 60380.000) ( 0d 2'45.96"W, 50d25'34.51"N)
Center ( 484680.000, 115980.000) ( 0d47'40.99"W, 50d56'11.37"N)
Band 1 Block=256x256 Type=UInt16, ColorInterp=Gray
Description = Blue
Min=1.000 Max=2459.000
Minimum=1.000, Maximum=2459.000, Mean=93.234, StdDev=155.846
NoData Value=0
Overviews: 2704x2780, 1352x1390, 676x695, 338x347, 169x173
Metadata:
ATTRIBUTETABLE_CHUNKSIZE=1000
LAYER_TYPE=athematic
STATISTICS_EXCLUDEDVALUES=0
STATISTICS_HISTOBINFUNCTION=linear
STATISTICS_HISTOBINVALUES=313|132138|3218980|10696252|15875437|9418712|4137267|2396392|1547224|1319819|871921|689650|480895|312188|275321|206391|202031|179196|147838|154172|132337|139280|133389|114713|123262|107450|116572|112379|98792|107788|94840|102595|99792|88529|95852|85074|93346|91822|81827|88194|78309|85110|84842|75079|82032|72224|80071|78713|70615|76875|68391|75817|74871|66010|72996|64896|71879|71538|62797|68936|61109|67659|66478|58752|64310|56529|62350|61532|54160|59564|52071|56460|55200|48656|52824|47359|50917|49391|43434|47113|40748|43910|42092|36596|38981|33993|36364|34556|29897|31995|27534|29271|28404|24645|25379|21550|23349|22269|19231|20164|17231|18340|17206|14342|15165|12766|13492|12568|10726|11399|9455|10083|9439|7950|8030|6767|7090|6674|5325|5575|4498|4556|4183|3471|3452|2981|2973|2645|2283|2214|2081|1714|1723|1266|1363|1162|920|907|674|737|646|527|547|389|409|332|260|233|170|185|148|112|80|66|61|58|33|27|19|7|1|4|5|5|1|3|2|4|3|3|2|2|4|3|2|0|6|5|3|1|7|3|1|2|5|2|9|0|1|3|1|1|2|1|2|3|3|1|2|1|3|1|3|0|0|2|2|2|4|1|2|2|0|2|3|0|4|2|4|0|0|0|1|3|0|2|5|1|0|0|1|0|1|0|0|1|0|0|0|0|0|0|0|1|0|0|0|0|0|0|0|0|0|0|0|1
STATISTICS_HISTOMAX=2459
STATISTICS_HISTOMIN=1
STATISTICS_HISTONUMBINS=256
STATISTICS_MAXIMUM=2459
STATISTICS_MEAN=93.23404507260453
STATISTICS_MEDIAN=39.40625
STATISTICS_MINIMUM=1
STATISTICS_MODE=39.40625
STATISTICS_STDDEV=155.8464802192733
######################################
GeoServer and GeoTool version
* GeoServer Version2.12-SNAPSHOT
* Git Revisioncee07edb89e39269e7a197611ac479ab7d6782b0
* Build Date2018-02-09T14:12:13Z
* GeoTools Version18-SNAPSHOT (rev
f3cc192ad41e67e17f95f8ecf5ac03ab4318e93e)
######################################
True Colour SLD Example
<?xml version="1.0" encoding="UTF-8"?>
<StyledLayerDescriptor
xmlns="http://www.opengis.net/sld";
xmlns:ogc="http://www.opengis.net/ogc";
xmlns:xlink="http://www.w3.org/1999/xlink";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://www.opengis.net/sld
http://schemas.opengis.net/sld/1.0.0/StyledLayerDescriptor.xsd"; version="1.0.0">
<NamedLayer>
<Name>S2_True_Colour</Name>
<UserStyle>
<Title>S2_True_Colour</Title>
<FeatureTypeStyle>
<Rule>
<RasterSymbolizer>
<Opacity>1.0</Opacity>
<ChannelSelection>
<RedChannel>
<SourceChannelName>3</SourceChannelName>
<ContrastEnhancement>
<Normalize>
<VendorOption
name="algorithm">StretchToMinimumMaximum</VendorOption>
<VendorOption name="minValue">0</VendorOption>
<VendorOption name="maxValue">300</VendorOption>
</Normalize>
</ContrastEnhancement>
</RedChannel>
<GreenChannel>
<SourceChannelName>2</SourceChannelName>
<ContrastEnhancement>
<Normalize>
<VendorOption
name="algorithm">StretchToMinimumMaximum</VendorOption>
<VendorOption name="minValue">0</VendorOption>
<VendorOption name="maxValue">300</VendorOption>
</Normalize>
</ContrastEnhancement>
</GreenChannel>
<BlueChannel>
<SourceChannelName>1</SourceChannelName>
<ContrastEnhancement>
<Normalize>
<VendorOption
name="algorithm">StretchToMinimumMaximum</VendorOption>
<VendorOption name="minValue">0</VendorOption>
<VendorOption name="maxValue">300</VendorOption>
</Normalize>
</ContrastEnhancement>
</BlueChannel>
</ChannelSelection>
</RasterSymbolizer>
</Rule>
</FeatureTypeStyle>
</UserStyle>
</NamedLayer>
</StyledLayerDescriptor>
SCISYS UK Limited. Registered in England and Wales No. 4373530.
Registered Office: Methuen Park, Chippenham, Wiltshire SN14 0GB, UK.
Before printing, please think about the environment.
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