<div dir="ltr"><div dir="ltr"><div>Hi All,</div><div><br></div><div>Sorry for hijacking the thread but I had kind of the "opposite" issue, trying to achieve the same goal (external overviews for JP2 files) using the JP2KAK driver instead of JP2OpenJPEG. In my case, it looks like I can only create the overview files directly using gdaladdo, without doing a gdal_translate first. If I try to do a gdal_translate first I end up with a 0-fileed file. Let me give an example:</div><div><br></div><div>I run gdal_translate first as follows:</div><div><br></div><div>gdal_translate -outsize 50% 50% -co TILED=YES -co COMPRESS=JPEG -co PHOTOMETRIC=YCBCR /tmp/T34WEB_20181015T104021_TCI_10m.jp2 ~/T34WEB_20181015T104021_TCI_10m.jp2.ovr_geosolutions_jkak --config GDAL_SKIP JP2OpenJPEG</div><div><br></div><div>Then compute stats on the file with gdalinfo -stats and I get the following:</div><div><br></div><div>gdalinfo -stats T34WEB_20181015T104021_TCI_10m.jp2.ovr_geosolutions_jkak</div><div><br></div><div>Driver: GTiff/GeoTIFF</div><div>Files: T34WEB_20181015T104021_TCI_10m.jp2.ovr_geosolutions_jkak</div><div>Size is 5490, 5490</div><div>Coordinate System is:</div><div>PROJCS["WGS 84 / UTM zone 34N",</div><div> GEOGCS["WGS 84",</div><div> DATUM["WGS_1984",</div><div> SPHEROID["WGS 84",6378137,298.257223563,</div><div> AUTHORITY["EPSG","7030"]],</div><div> AUTHORITY["EPSG","6326"]],</div><div> PRIMEM["Greenwich",0,</div><div> AUTHORITY["EPSG","8901"]],</div><div> UNIT["degree",0.0174532925199433,</div><div> AUTHORITY["EPSG","9122"]],</div><div> AUTHORITY["EPSG","4326"]],</div><div> PROJECTION["Transverse_Mercator"],</div><div> PARAMETER["latitude_of_origin",0],</div><div> PARAMETER["central_meridian",21],</div><div> PARAMETER["scale_factor",0.9996],</div><div> PARAMETER["false_easting",500000],</div><div> PARAMETER["false_northing",0],</div><div> UNIT["metre",1,</div><div> AUTHORITY["EPSG","9001"]],</div><div> AXIS["Easting",EAST],</div><div> AXIS["Northing",NORTH],</div><div> AUTHORITY["EPSG","32634"]]</div><div>Origin = (499980.000000000000000,7700040.000000000000000)</div><div>Pixel Size = (20.000000000000000,-20.000000000000000)</div><div>Metadata:</div><div> AREA_OR_POINT=Area</div><div> Corder=LRCP</div><div>Image Structure Metadata:</div><div> COMPRESSION=YCbCr JPEG</div><div> INTERLEAVE=PIXEL</div><div> SOURCE_COLOR_SPACE=YCbCr</div><div>Corner Coordinates:</div><div>Upper Left ( 499980.000, 7700040.000) ( 20d59'58.17"E, 69d24'34.71"N)</div><div>Lower Left ( 499980.000, 7590240.000) ( 20d59'58.25"E, 68d25'29.70"N)</div><div>Upper Right ( 609780.000, 7700040.000) ( 23d47'41.77"E, 69d23'13.78"N)</div><div>Lower Right ( 609780.000, 7590240.000) ( 23d40'24.01"E, 68d24'12.80"N)</div><div>Center ( 554880.000, 7645140.000) ( 22d22' 0.55"E, 68d54'42.54"N)</div><div>Band 1 Block=256x256 Type=Byte, ColorInterp=Red</div><div><b> Minimum=0.000, Maximum=0.000, Mean=0.000, StdDev=0.000</b></div><div> Metadata:</div><div> STATISTICS_MAXIMUM=0</div><div> STATISTICS_MEAN=0</div><div> STATISTICS_MINIMUM=0</div><div> STATISTICS_STDDEV=0</div><div>Band 2 Block=256x256 Type=Byte, ColorInterp=Green</div><div><b> Minimum=0.000, Maximum=0.000, Mean=0.000, StdDev=0.000</b></div><div> Metadata:</div><div> STATISTICS_MAXIMUM=0</div><div> STATISTICS_MEAN=0</div><div> STATISTICS_MINIMUM=0</div><div> STATISTICS_STDDEV=0</div><div>Band 3 Block=256x256 Type=Byte, ColorInterp=Blue</div><div><b> Minimum=0.000, Maximum=0.000, Mean=0.000, StdDev=0.000</b></div><div> Metadata:</div><div> STATISTICS_MAXIMUM=0</div><div> STATISTICS_MEAN=0</div><div> STATISTICS_MINIMUM=0</div><div> STATISTICS_STDDEV=0</div><div><br></div><div><br></div><div>If I produce the overview file "on the fly" with gdaladdo I get a good overview file instead:</div><div><br></div><div>gdaladdo -ro --config COMPRESS_OVERVIEW JPEG --config PHOTOMETRIC_OVERVIEW YCBCR --config </div><div>INTERLEAVE_OVERVIEW PIXEL T34WEB_20181015T104021_TCI_10m.jp2 2 4 8 16 32 64 128</div><div><br></div><div>gdalinfo -stats ./T34WEB_20181015T104021_TCI_10m.jp2.ovr </div><div>Driver: GTiff/GeoTIFF</div><div>Files: ./T34WEB_20181015T104021_TCI_10m.jp2.ovr</div><div>Size is 5490, 5490</div><div>Coordinate System is `'</div><div>Image Structure Metadata:</div><div> COMPRESSION=YCbCr JPEG</div><div> INTERLEAVE=PIXEL</div><div> SOURCE_COLOR_SPACE=YCbCr</div><div>Corner Coordinates:</div><div>Upper Left ( 0.0, 0.0)</div><div>Lower Left ( 0.0, 5490.0)</div><div>Upper Right ( 5490.0, 0.0)</div><div>Lower Right ( 5490.0, 5490.0)</div><div>Center ( 2745.0, 2745.0)</div><div>Band 1 Block=128x128 Type=Byte, ColorInterp=Red</div><div><b> Minimum=0.000, Maximum=255.000, Mean=71.229, StdDev=62.445</b></div><div> Overviews: 2745x2745, 1373x1373, 687x687, 344x344, 172x172, 86x86</div><div> Metadata:</div><div> STATISTICS_MAXIMUM=255</div><div> STATISTICS_MEAN=71.229008132023</div><div> STATISTICS_MINIMUM=0</div><div> STATISTICS_STDDEV=62.445099566295</div><div>Band 2 Block=128x128 Type=Byte, ColorInterp=Green</div><div><b> Minimum=0.000, Maximum=255.000, Mean=66.111, StdDev=62.790</b></div><div> Overviews: 2745x2745, 1373x1373, 687x687, 344x344, 172x172, 86x86</div><div> Metadata:</div><div> STATISTICS_MAXIMUM=255</div><div> STATISTICS_MEAN=66.110971363731</div><div> STATISTICS_MINIMUM=0</div><div> STATISTICS_STDDEV=62.790298201369</div><div>Band 3 Block=128x128 Type=Byte, ColorInterp=Blue</div><div><b> Minimum=0.000, Maximum=255.000, Mean=67.561, StdDev=63.721</b></div><div> Overviews: 2745x2745, 1373x1373, 687x687, 344x344, 172x172, 86x86</div><div> Metadata:</div><div> STATISTICS_MAXIMUM=255</div><div> STATISTICS_MEAN=67.560742897336</div><div> STATISTICS_MINIMUM=0</div><div> STATISTICS_STDDEV=63.721118995755</div><div><br></div><div>Any idea on what is causing this? I am using GDAL version 2.2.4</div><div><br></div><div>Thank you in advance</div></div></div><br><div class="gmail_quote"><div dir="ltr">On Wed, Oct 17, 2018 at 11:53 AM Daniele Romagnoli <<a href="mailto:daniele.romagnoli@geo-solutions.it">daniele.romagnoli@geo-solutions.it</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><br><br><div class="gmail_quote"><div dir="ltr">---------- Forwarded message ---------<br>From: <strong class="gmail_sendername" dir="auto">jratike80</strong> <span dir="ltr"><<a href="mailto:jukka.rahkonen@maanmittauslaitos.fi" target="_blank">jukka.rahkonen@maanmittauslaitos.fi</a>></span><br>Date: Mon, Oct 8, 2018 at 1:08 PM<br>Subject: Re: [gdal-dev] Creating external overviews for JP2 files?<br>To: <<a href="mailto:gdal-dev@lists.osgeo.org" target="_blank">gdal-dev@lists.osgeo.org</a>><br></div><br><br>Hi Andrea,<br>
<br>
I had a try and it works for me with the gisinternals build "GDAL 2.4.0dev"<br>
with JP2OpenJPEG driver<br>
<br>
gdaladdo -ro --config COMPRESS_OVERVIEW JPEG --config PHOTOMETRIC_OVERVIEW<br>
YCBCR --conf<br>
ig INTERLEAVE_OVERVIEW PIXEL ovr.jp2 2 4 8 16 32<br>
0...10...20...30...40...50...60...70...80...90...100 - done.<br>
<br>
<br>
-Jukka Rahkonen-<br>
<br>
<br>
<br>
--<br>
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