Hi, I’m trying to use the image pyramid plug-in for a big ortho image. I’m unable to find a good combination of settings with a manageable “data footprint” and clean borders without artefacts.
When using gdal_retile.py in combination with -co "COMPRESS=JPEG" I get compression artefacts as described e.g. here: https://gis.stackexchange.com/questions/114370/compression-artifacts-and-gdal When I try e.g. this, I get an excellent end result, but the data footprint is about 7 time bigger (too big for my use case) than using COMPRESS=JPEG: gdalwarp input.tif clipped.tif -cutline border.shp -dstalpha gdal_retile.py -v -r bilinear -levels 4 -ps 2048 2048 -co "TILED=YES" -co "COMPRESS=Deflate" -targetDir output_dir clipped.tif With COMPRESS=JPEG I get errors after publishing the pyramid via GeoServer (GeoServer cannot handle an alpha channel added on top of a JPEG compression) as described here: https://gis.stackexchange.com/questions/213257/problem-with-rendering-jpeg-compressed-image-caused-by-java-lang-classnotfoun I tried adding a footprint via a footprints.properties file in the top level of the image pyramid directory trying to add an external mask with: footprint_source=border.shp pointing to a footprint SHP-file. This does not seem to be picked up by GeoServer. I can find documentation on how this should be done for ImageMosaic. For ImagePyramids something similar should be possible according to this tutorial: https://docs.geoserver.org/2.23.x/en/user/tutorials/imagemosaic_footprint/imagemosaic_footprint.html But I can’t find examples on how this should be configured specifically for ImagePyramids. Is it possible to use an external mask with ImagePyramids? Can someone point me to documentation on how this should be done or explain what I might be doing wrong? Kind regards, Olav
_______________________________________________ Geoserver-users mailing list Please make sure you read the following two resources before posting to this list: - Earning your support instead of buying it, but Ian Turton: http://www.ianturton.com/talks/foss4g.html#/ - The GeoServer user list posting guidelines: http://geoserver.org/comm/userlist-guidelines.html If you want to request a feature or an improvement, also see this: https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer Geoserver-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geoserver-users
