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From: | Pantxo Diribarne |
Subject: | [Octave-bug-tracker] [bug #55486] imread imports PDF(paper) images with low 75dpi(screen) resolution |
Date: | Wed, 16 Jan 2019 05:04:59 -0500 (EST) |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0 |
Follow-up Comment #1, bug #55486 (project octave): The fact that imread can import PDF (vector) files is not documented, so not officially supported. I'll change the item group into a "feature request" to add options for importing vector formats. I am not in favor of adding such capability (and I'll let devs other developpers give their opinion): * options like "PixelRegion" will become complicated since the resolution of the rasterizer engine will come into play. * it is very easy to do what graphicsmagick does: use ghostscript to first convert the PDF file to raster format and use whatever option you want. system ("gs -sDEVICE=png16m -dTextAlphaBits=4 -r300 -o output.png input.pdf") im = imread ("output.png") On windows, you'll have to find the ghostcript binary (in the bin folder) and replace "gs" in this example. _______________________________________________________ Reply to this item at: <https://savannah.gnu.org/bugs/?55486> _______________________________________________ Message posté via Savannah https://savannah.gnu.org/
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