cs:imagemagik
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cs:imagemagik [2019/09/16 10:22] paolo_bolzoni Add a way to make a b/w from commandline |
cs:imagemagik [2020/04/19 02:14] (current) paolo_bolzoni |
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| + | === Convert pdf pages to a picture === | ||
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| + | $ gs -sDEVICE=pngalpha -o <output-%04d.png> -r1200 -dFirstPage=<start page idx> -dLastPage=<end page idx> <input> | ||
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| + | n.b., the resolution of 1200 pixels for inch is quite large. Probably one wants to convert the result in smaller files. | ||
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| + | === Remove pictures from a pdf file === | ||
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| + | $ gs -o noimage.pdf -sDEVICE=pdfwrite -dFILTERIMAGE <input> | ||
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| === Convert an image to black and white === | === Convert an image to black and white === | ||
| $ convert <input> -colorspace HSL -channel L -separate <output> | $ convert <input> -colorspace HSL -channel L -separate <output> | ||
cs/imagemagik.1568629363.txt.gz ยท Last modified: 2019/09/16 10:22 by paolo_bolzoni
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