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<body class='hmmessage'><div dir='ltr'><br><br><div>> Date: Sat, 13 Feb 2016 23:37:13 +0000<br>> From: karl@freefriends.org<br>> To: list0570@paradise.net.nz<br>> CC: williambader@hotmail.com; tex-k@tug.org<br>> Subject: Re: [tex-k] patch to epstopdf<br>> <br>> monochrome images (PS might not be)<br>> <br>> I cannot speak to "color models", and Ghostscript options are yet<br>> another world, but PostScript the language certainly supports monochrome<br>> images, in that the venerable image operator handles images with depths<br>> of 1, 2, 4, or 8 bits.<br>> <br>> I can't say I know what to make of it in practice,<br>> http://www.ghostscript.com/doc/current/Ps2pdf.htm does list various<br>> Mono* parameters. William, is that what you were tinkering with?<br>> <br>> In any case, I see no reason not to add the grayscale option just<br>> because we haven't figured out the monochrome option. <br>> <br>> Thanks,<br>> Karl<br></div><div><br></div><div><br></div><div>Yes, I tried ps2pdf -sColorConversionStrategy=Gray -dProcessColorModel=/DeviceGray -dColorImageDepth=1 -dGrayImageDepth=1 -dMonoImageDepth=1 colorcir.ps</div><div><br></div><div>but I still came up with grayscale image. It might be possible with a custom ICC profile.</div><div><br></div><div>At least for printing, I am not sure if converting to 1 bit monochrome would ever be useful. Images would come out very ugly. RIPs need to see grayscales in order to generate halftones.</div><div><br></div><div>Regards, William</div><div><br></div> </div></body>
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