Talk-AU, I have updated the http://agri.openstreetmap.org/ imagery. JOSM and Potlatch2 both imagery presets.
1) Fixed the black strip/blob issue at the overlap regions. 2) Improved the projection accuracy. (epsg:32749 to 32756) 3) Speed improvement. (Fixed double projection bug and needless resampling) The imagery took 2 weeks to process after a number of false starts. Download: AGRI technical report + Legal + Control point photos are available here: http://agri.openstreetmap.org/download/ (also rsync://faffy.osm.org/agri_extra/ ) Example control photo: http://agri.openstreetmap.org/download/AGRI_GCP/Ancillary_data/Zone_52_Middle/Photographs/57406502_N_photo.jpg I would appreciate help converting the ArcGIS database to a shapefile or similar: http://agri.openstreetmap.org/download/AGRI_GCP/AGRI_GCP.gdb/ (download all files here: http://agri.openstreetmap.org/download/AGRI_GCP/temp-AGRI_GCP.zip ) I believe the DB was created with ArcGIS 9.x. Seems gdal/ogr is only able to handle v10 databases. The compressed (lossless) imagery files and MapServer file are available for download here: rsync://faffy.osm.org/agri_imagery/ The *.tif.ovr are lossy overview files can be rebuilt locally by using the gdaladdo command below. Please be restrained in downloading the files, 1.2TB will take a long time. I'd appreciate a heads-up email prior to anyone downloading the imagery. Technical: 1) I reprocessed all the imagery from the source 2.8TB of ENVI rasters to 1.2TB of GeoTIFF (BigTIFF, lossless DEFLATE z9): 2) Built gdaladdo JPEG overviews. gdal commands used: gdal_translate -of GTiff -co COMPRESS=DEFLATE -co PREDICTOR=2 -co ZLEVEL=9 -co TILED=YES -co BLOCKXSIZE=512 -co BLOCKYSIZE=512 -co TFW=YES -co BIGTIFF=YES -a_srs epsg:32755 PRISM_UTM55 PRISM_UTM55.tif gdaladdo -ro --config COMPRESS_OVERVIEW JPEG --config JPEG_QUALITY_OVERVIEW 75 --config INTERLEAVE_OVERVIEW PIXEL --config PHOTOMETRIC YCBCR --config BIGTIFF_OVERVIEW YES --config GDAL_TIFF_OVR_BLOCKSIZE 512 -r gauss PRISM_UTM55.tif 2 4 8 16 32 64 128 256 512 1024 2048 4096 8192 Future: The server should be upgraded in the next 2 weeks. I currently do not have any future plans on reprocessing the imagery further. Others may wish to look at how to selectively choose the best imagery where there is a region overlap to reduce the cloud cover. Any questions? Happy to assist others in getting imagery online. Regards Grant _______________________________________________ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
