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May 2010
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2010.05.24 17:45 "Re: Script Oriented, File Based Utility for Resampling TIFF Files", by Even Rouault
You could try with GDAL utilities. gdal_translate or gdalwarp depending of your exact needs. Le Monday 24 May 2010 05:52:24 Kevin Myers, vous avez écrit : > I am working with a large number (thousands) of extremely large tiff images > (hundreds of megapixels or larger) that need to be resampled, most of them > from 300 dpi to 200 dpi. Currently I am using GraphicsMagick for this > purpose GraphicsMagick is an excellent program, but it is very slow for > the images that I am dealing with due to their size and GraphicsMagick's > memory-oriented implementation (it essentially wants to load the entire > image into memory at one time, since the image won't fit into RAM in the > representation used by GraphicsMagick, it is paged to and from disk, which > is very slow). > > In order to speed up this process, I need a script oriented resampling > utility that can only load portions of images (e.g tiles or strips) into > memory at one time, something similar to tiffcp. Both tiffcp and its > cousin tiffcrop can manipulate tiff images without loading the entire image > into memory, but neither is capable of true resampling to my knowledge. > Does anyone know of a script (command line) oriented strip/tile based > re-sampling utility for tiff files? > > Thanks, > Kevin M. > > > _______________________________________________ > Tiff mailing list: Tiff@lists.maptools.org > http://lists.maptools.org/mailman/listinfo/tiff > http://www.remotesensing.org/libtiff/