Re: [gdal-dev] Question on TIFF compression alternatives

2016-10-14 Thread Even Rouault
Le vendredi 14 octobre 2016 13:01:50, Neumann, Andreas a écrit : > Hi Even, > > Thank you for your detailed reply. > > I should have added that my concern is mainly about random access to > parts of the images - for QGIS server and QGIS Desktop. > > I have internal pyramids. I am not so sure if

Re: [gdal-dev] Question on TIFF compression alternatives

2016-10-14 Thread Neumann, Andreas
Hi Even, Thank you for your detailed reply. I should have added that my concern is mainly about random access to parts of the images - for QGIS server and QGIS Desktop. I have internal pyramids. I am not so sure if it is tiled or not. Does gdalinfo reveal whether the TIFF was created with "TI

Re: [gdal-dev] Question on TIFF compression alternatives

2016-10-14 Thread Even Rouault
Le vendredi 14 octobre 2016 09:45:38, Neumann, Andreas a écrit : > Hi, > > I have a question on TIFF compression alternatives. > > My data of concern is 8bit gray value. Lots of white pixel (>95%), the > rest is black pixels (content) and some gray pixels because of > antialiasing. > > I would l