I have successfully been using gdal_translate to convert some tifs. Viewing my resulting 8 byte tifs through a GIS viewer, the color ramp is perfect. However I converted these to 8 byte so i could further work with them in photoshop.
When I open one of my 8 byte .tifs in photoshop, the DEM looks different (looks like some type of stretch, cant be sure, but it looks like standard deviation. I gather this means that when gdal is saving the tif, the actual colors it stores in the tif are not the elevation values themselves, but instead rely on a histogram calculation (from an outside file) to correct for showing the actual elevations.I have tried correcting for this in photoshop, but the histogram tools are not nearly as sophisticated enough for any precise manipulation. I am still a newbie in gdal. How can i save an 8byte tif so that the actual .tif grayscale colors are not stretched at all? (does not rely on another file to correct for this?). Or conversely, how can I convert how a .tif is stretched? Is this going outside the realm of gdal_translate? many thanks for any help. -- View this message in context: http://n2.nabble.com/storing-height-information-in-a-tif-rather-the-grayscale-in-the-tif-relying-on-another-file-tp4617873p4617873.html Sent from the GDAL - Dev mailing list archive at Nabble.com. _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
