[XeTeX] XeLaTeX resolution

Meho R. meho_r at yahoo.com
Mon Feb 23 22:44:11 CET 2009


I read somewhere that resolution of 267 dpi for bitmap images is enough. Can anyone confirm it?

----- Original Message -----
From: "Jonathan Kew" <jonathan at jfkew.plus.com>
To: "Unicode-based TeX for Mac OS X and other platforms" <xetex at tug.org>
Sent: Monday, February 23, 2009 10:17:19 PM GMT +01:00 Amsterdam / Berlin / Bern / Rome / Stockholm / Vienna
Subject: Re: [XeTeX] XeLaTeX resolution

On 23 Feb 2009, at 20:24, Nicolas Vaughan wrote:

> Hi Mike,
> Thanks for your reply.
> So I shall not worry about my publisher's requirement if I use OTF?

For fonts (if you use TrueType or OpenType fonts) it certainly  
shouldn't be an issue. Outline fonts like this are effectively  
"infinite resolution".

I think the concern is with included images. If these are vector  
graphics, no problem; but if they're bitmapped images (such as scanned  
photos or line-art) then resolution is an issue. But AFAIK, xetex/ 
xdvipdfmx won't change them, it will just include the image data as  
provided, with appropriate positioning and scaling. So you just need  
to make sure your original PNG or JPG images are sufficiently high  
resolution (allowing for scaling, if you're not placing them at their  
original full size) to meet the publisher's requirements.

1200dpi would be appropriate for line art; for scanned color photos,  
you shouldn't need anywhere near as high dpi because of the screening  
processes involved.

JK

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