See http://www.imagemagick.org/Usage/quantize/#two_color for some more information and possibilities.
On Fri, Feb 20, 2009 at 2:39 PM, Ross Presser <[email protected]> wrote: > Grayscale is not a 1-bit colorspace, it is an 8-bit colorspace. If you > really want black and white, you probably want it dithered. Try this: > convert -monochrome -density 200 -depth 1 source.eps dest.png > > Systems will still report your PNG as 8 bits per pixel; PNG doesn't have a > 1-bit-per-pixel depth as I recall. TIFF does, though: > > $ convert -monochrome -density 200 -depth 1 logo: test.tiff > $ identify test.tiff > test.tiff TIFF 640x480 640x480+0+0 DirectClass 1-bit 7.74219kb > > On Fri, Feb 20, 2009 at 10:47 AM, Rechtsanwalt A. Winzer < > [email protected]> wrote: > >> Hello, >> >> I'm not that good in english but I have a problem with convert and I'm >> willing to solve it. I use convert with the following command-line: >> >> convert -colorspace Gray -density 200 -depth 1 source.eps dest.png >> >> The quality of the result is quite poor and the bit depth in some graphic >> prograns (windows xp) is shown as 32 bit. >> How can I make the picture with a depth of only one single bit and get a >> better quality? >> >> Thanks >> Alex >> _______________________________________________ >> Magick-users mailing list >> [email protected] >> http://studio.imagemagick.org/mailman/listinfo/magick-users >> >> > _______________________________________________ Magick-users mailing list [email protected] http://studio.imagemagick.org/mailman/listinfo/magick-users
