id summary reporter owner description type status priority milestone component version severity resolution keywords cc 7012 OpenJPEG Driver inefficient on images with small tiles trastourf warmerdam "The OpenJPEG driver is very slow with Sentinel Quicklooks like : http://sentinel-s2-l1c.s3-website.eu-central-1.amazonaws.com/tiles/31/T/EN/2017/5/26/0/preview.jp2 It seems the problem is related to the blocksize of the images (8x8) - internal tiles are processed one at a time which in this case leads to a very poor performance; gdal_translate image.jp2 image.tif takes about 7 seconds to execute (image size is 343x343). " enhancement closed normal 2.2.2 GDAL_Raster svn-trunk normal fixed OpenJPEG