WCS raster output black & white on ECW
Bart van den Eijnden (OSGIS)
bartvde at XS4ALL.NL
Sun May 21 07:27:09 EDT 2006
The question is then, what would the correct/intended behaviour be?
Probably a warning in the GetCapabilities WCS response would be the way
to go, the warning stating that wcs_bandcount is not set and has a
default value of 1, just like WMS does.
Best regards,
Bart
Shoaib Burq wrote:
> Bart/Frank do u think its worth filing a bug on this?
>
> On 5/19/06, Bart van den Eijnden (OSGIS) <bartvde at xs4all.nl> wrote:
>
>> After inspecting the source code I think I know what is going on ... :-)
>>
>> If ows_extent is set, Mapserver does not inspect the file to get the
>> extent. So it also does not determine how many bands a file has, and the
>> number of bands apparently defaults to 1.
>>
>> If I set wcs_bandcount to 3 and keep ows_extent, it works fine.
>>
>> Best regards,
>> Bart
>>
>> > Just found out after many hours that this is caused by having
>> OWS_EXTENT
>> > METADATA. If I comment out the OWS_EXTENT metadata, I get the
>> coverage in
>> > colour.
>> >
>> > Frank, any ideas what could cause this?
>> >
>> > LAYER
>> > METADATA
>> > "WMS_LAYER_GROUP" "/LUCHTFOTO/DIGITAAL KLEUREN
>> > LUCHTFOTOGRAFIE"
>> > "OWS_TITLE" "Luchtfoto 2005"
>> > "OWS_ABSTRACT" "Luchtfoto 2005"
>> > #"OWS_EXTENT" "10000 305000 280000 619000"
>> > "WMS_METADATAURL_TYPE" "TC211"
>> > "WMS_METADATAURL_FORMAT" "text/xml"
>> > "WMS_METADATAURL_HREF"
>> >
>> "http://145.50.148.28/geoservices/widgets/GeoservicesCatalogSearch/WCASWrapper.php?WCASURL=http://145.50.148.28:8082/deegreewcas/wcas&FILEIDENTIFIER=AAA216"
>>
>> > "WFS_MAXFEATURES" "50"
>> > "WCS_LABEL" "Digitale Kleuren Luchtfoto's
>> Nederland.
>> > Landsdekkende fotografie van Nederland."
>> > "WCS_RANGESET_NAME" "Luchtfoto's"
>> > "WCS_RANGESET_LABEL" "Luchtfoto's"
>> > "WCS_FORMATS" "GEOTIFF,ECW,MRSID"
>> > "WCS_RESOLUTION" "0.4 0.4"
>> > "WCS_SIZE" "690000 800000"
>> > "GML_INCLUDE_ITEMS" "all"
>> > "GML_EXCLUDE_ITEMS" "class"
>> > END
>> > PROJECTION
>> > "init=epsg:28992"
>> > END
>> > NAME "AAA216" # zie basispakket.mdb, ISO19115
>> > DATA "aerogrid_nl2005/Aerogrid_NL2005_40cm.ecw"
>> > STATUS ON
>> > DUMP TRUE
>> > TYPE RASTER
>> > UNITS METERS
>> > MAXSCALE 150000
>> > END
>> >
>> > Best regards,
>> > Bart
>> >
>> >> In addition, this is the output when CPL_DEBUG is ON:
>> >>
>> >> [Fri May 19 09:05:44 2006] [error] [client 145.50.90.64] ECW:
>> >>
>> NCScbmOpenFileView(/data/geopakhuis/aerogrid_nl2005/Aerogrid_NL2005_40cm.ecw):
>>
>> >> eErr = 0
>> >> [Fri May 19 09:05:44 2006] [error] [client 145.50.90.64] ECW:
>> FileInfo:
>> >> SizeXY=690000,800000 Bands=3
>> >> [Fri May 19 09:05:44 2006] [error] [client 145.50.90.64]
>> >> OriginXY=8000,624000 CellIncrementXY=0.4,-0.4
>> >> [Fri May 19 09:05:44 2006] [error] [client 145.50.90.64]
>> >> [Fri May 19 09:05:44 2006] [error] [client 145.50.90.64] ECW:
>> >> projection=LOCAL, datum=WGS84
>> >> [Fri May 19 09:05:44 2006] [error] [client 145.50.90.64] GDAL:
>> >> GDALOpen(/data/geopakhuis/aerogrid_nl2005/Aerogrid_NL2005_40cm.ecw)
>> >> succeeds as ECW.
>> >> [Fri May 19 09:05:44 2006] [error] [client 145.50.90.64]
>> >> [Fri May 19 09:05:44 2006] [error] [client 145.50.90.64]
>> ECWRasterBand:
>> >> RasterIO(nXOff=443174,nYOff=749014,nXSize=1254,nYSize=751 ->
>> 1252x750)
>> >> [Fri May 19 09:05:45 2006] [error] [client 145.50.90.64] GDAL:
>> >> GDALClose(/data/geopakhuis/aerogrid_nl2005/Aerogrid_NL2005_40cm.ecw)
>> >> [Fri May 19 09:05:45 2006] [error] [client 145.50.90.64]
>> >> [Fri May 19 09:05:45 2006] [error] [client 145.50.90.64] GDAL:
>> >> GDALDriver::Create(MEM,msSaveImageGDAL_temp,1252,750,4,Byte,(nil))
>> >> [Fri May 19 09:05:45 2006] [error] [client 145.50.90.64] ECW:
>> >> GetGDTProjDat(28992) = NUTM31/RD
>> >> [Fri May 19 09:05:45 2006] [error] [client 145.50.90.64] ECW: Writing
>> >> with
>> >> PROJ=NUTM31, DATUM=RD
>> >> [Fri May 19 09:06:00 2006] [error] [client 145.50.90.64] ECW:
>> >>
>> NCScbmOpenFileView(/data/OGC_UMN_services/tmp/ms_tmp/114802234574260.ecw):
>>
>> >> eErr = 0
>> >> [Fri May 19 09:06:00 2006] [error] [client 145.50.90.64] ECW:
>> FileInfo:
>> >> SizeXY=1252,750 Bands=4
>> >> [Fri May 19 09:06:00 2006] [error] [client 145.50.90.64]
>> >> OriginXY=185270,324394 CellIncrementXY=0.40016,-0.4
>> >> [Fri May 19 09:06:00 2006] [error] [client 145.50.90.64]
>> >> [Fri May 19 09:06:00 2006] [error] [client 145.50.90.64] ECW:
>> >> projection=NUTM31, datum=RD
>> >> [Fri May 19 09:06:00 2006] [error] [client 145.50.90.64] GDAL:
>> >> GDALOpen(/data/OGC_UMN_services/tmp/ms_tmp/114802234574260.ecw)
>> succeeds
>> >> as ECW.
>> >> [Fri May 19 09:06:00 2006] [error] [client 145.50.90.64]
>> >> [Fri May 19 09:06:00 2006] [error] [client 145.50.90.64] GDAL:
>> >> GDALClose(msSaveImageGDAL_temp)
>> >> [Fri May 19 09:06:00 2006] [error] [client 145.50.90.64]
>> >> [Fri May 19 09:06:00 2006] [error] [client 145.50.90.64] GDAL:
>> >> GDALClose(/data/OGC_UMN_services/tmp/ms_tmp/114802234574260.ecw)
>> >> [Fri May 19 09:06:00 2006] [error] [client 145.50.90.64]
>> >> [Fri May 19 09:06:00 2006] [error] [client 145.50.90.64] GDAL:
>> >> GDALDeregister_GTiff() called.
>> >>
>> >> Best regards,
>> >> Bart
>> >>
>> >>> Hi list,
>> >>>
>> >>> using Mapserver 4.8.3, GDAL 1.3.2 final and the latest ECW SDK we
>> are
>> >>> running into a strange issue. This is on Red Hat Enterprise 3.
>> >>>
>> >>> We use Mapserver WCS to output rasters in ECW, Geotiff and MrSID
>> >>> format.
>> >>> If we use a Geotiff as a source, all output from Mapserver WCS is
>> okay.
>> >>> If
>> >>> we use an aerial photo in ECW format as input, all output (ECW,
>> MrSID
>> >>> as
>> >>> well as Geotiff) comes out black and white instead of colour. WMS
>> >>> output
>> >>> is just fine. Any ideas what could be causing this?
>> >>>
>> >>> Btw, a direct gdal_translate works fine and outputs in colour:
>> >>>
>> >>> [root at poseidon gdelivery]# gdal_translate -of "Gtiff" -projwin
>> 185269.9
>> >>> 324394.4 185771.2 324093.7
>> >>> /data/geopakhuis/aerogrid_nl2005/Aerogrid_NL2005_40cm.ecw
>> >>> /tmp/testbart.tif
>> >>> Input file size is 690000, 800000
>> >>> Computed -srcwin 443174 749014 1253 752 from projected window.
>> >>> 0...10...20...30...40...50...60...70...80...90...100 - done.
>> >>>
>> >>> These are the output formats used:
>> >>>
>> >>> OUTPUTFORMAT
>> >>> NAME "GEOTIFF"
>> >>> DRIVER "GDAL/GTiff"
>> >>> MIMETYPE "image/tiff"
>> >>> IMAGEMODE "RGBA"
>> >>> EXTENSION "tif"
>> >>> FORMATOPTION "COMPRESS=PACKBITS"
>> >>> END
>> >>>
>> >>> OUTPUTFORMAT
>> >>> NAME "ECW"
>> >>> DRIVER "GDAL/ECW"
>> >>> MIMETYPE "image/ecw"
>> >>> IMAGEMODE "RGBA"
>> >>> EXTENSION "ecw"
>> >>> END
>> >>>
>> >>> OUTPUTFORMAT
>> >>> NAME "MrSID"
>> >>> DRIVER "GDAL/MrSID"
>> >>> MIMETYPE "image/mrsid"
>> >>> IMAGEMODE "RGBA"
>> >>> EXTENSION "sid"
>> >>> END
>> >>>
>> >>> This is the gdalinfo output from the source ECW file:
>> >>>
>> >>> [root at poseidon gdelivery]# gdalinfo
>> >>> /data/geopakhuis/aerogrid_nl2005/Aerogrid_NL2005_40cm.ecw
>> >>> Driver: ECW/ERMapper Compressed Wavelets
>> >>> Size is 690000, 800000
>> >>> Coordinate System is:
>> >>> LOCAL_CS["LOCAL",
>> >>> UNIT["Meter",1]]
>> >>> Origin = (8000.000000,624000.200000)
>> >>> Pixel Size = (0.40000000,-0.40000000)
>> >>> Corner Coordinates:
>> >>> Upper Left ( 8000.000, 624000.200)
>> >>> Lower Left ( 8000.000, 304000.200)
>> >>> Upper Right ( 284000.000, 624000.200)
>> >>> Lower Right ( 284000.000, 304000.200)
>> >>> Center ( 146000.000, 464000.200)
>> >>> Band 1 Block=690000x1 Type=Byte, ColorInterp=Red
>> >>> Overviews: arbitrary
>> >>> Band 2 Block=690000x1 Type=Byte, ColorInterp=Green
>> >>> Overviews: arbitrary
>> >>> Band 3 Block=690000x1 Type=Byte, ColorInterp=Blue
>> >>> Overviews: arbitrary
>> >>>
>> >>> Thanks in advance.
>> >>>
>> >>> Best regards,
>> >>> Bart
>> >>>
>> >>
>> >>
>> >>
>> >
>> >
>> >
>>
>
>
>
--
Bart van den Eijnden
OSGIS, Open Source GIS
http://www.osgis.nl
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