On Sun, May 29, 2005 at 05:30:20PM +0200, Felix Natter wrote: > when I try to save this file: > http://home.t-online.de/~fam.natter/prosper/LDCLogosm.gif > as .eps (for inclusion in LaTeX-document), the resulting .eps > looks unsharp: > http://home.t-online.de/~fam.natter/prosper/LDCLogo.eps
I don't think there's anything wrong with the EPS file. Your GIF is only 150x80 pixels in size, so the resulting EPS file will certainly not look any better than the original :) In PostScript, rasterized images are embedded simply as is (no vectorization attempts are being made), and that's exactly what happened. Any perceived 'unsharpness' stems from rescaling/resampling effects that occur when looking at the image at different sizes -- i.e. ghostscript, acroread, etc. will most likely _not_ show the image representing 1 image pixel as 1 screen pixel... In case you don't believe the actual image is still the same in the EPS, try the following: * load the GIF in Gimp and zoom it up to 400% (view->zoom->4:1) * uncomment line 16 in the EPS file as follows (removes margin offset) % 14.173228346456694 14.173228346456694 translate * then display it with ghostscript like this $ gs -dDEVICEWIDTHPOINTS=150 -dDEVICEHEIGHTPOINTS=80 -r288x288 LDCLogo.eps Now you should have two windows of same size where each image pixel has been magnified to 4 screen pixels (in both cases), and you can easily verify that they're very much the same -- at least that's what they look like to me... ;) To achieve better results for printing, you'll probably want a better image resolution to start with. In case you can't get at one, the best results will be achieved, if you at least make sure that 1 image pixel will be represented by 1 halftoning cell when printed. Unfortunately, that's not always as easy as it sounds, 'cos quite a number of things do come into play here... (and it would get even more complex if you plan to print indirectly via PDF). Feel free to contact me off-list if you need to go that route -- but as I said, a better original image resolution would definitely be preferable. > > When I try to embed the .eps in a LaTeX-presentation, it looks > even worse (the white background is semi-yellow): Not sure what further processing steps LaTeX has applied here... the final result looks somewhat like a smoothed, low quality JPEG to me. I'm afraid I can't help with this problem... Cheers, Almut -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
