Re: [Dvipng] Higher quality (smooth) PNGs?

[U Avalos]

For reference (for anyone stumbling upon this thread), I stumbled upon a 
solution using dvips and imagemagick:

(1) Convert the dvi to a ps: dvips -E <dvifile> 
(2) Convert the ps to a PNG: convert -density 300 -resample 300 <psfile> 
<pngfile>.PNG

While the resulting images are too large on the screen, they *print* out just 
fine (which is the goal)---about 12 pt tall and very smooth. The print quality 
is much better than dvipng. Of course, the conversion process is much slower 
(for print, we don't really care about speed so that's OK). 

Unfortunately, I'm at a loss to explain why this method works so I don't know 
if it can be improved... 



On Tue, 10 Aug 2010 16:34:15 +0200
Jan-Åke Larsson <address@hidden> wrote:

> U Avalos skrev 08/10/2010 03:21 PM:
> > However, I'm not really a LaTeX person. How would I go about making PDF 
> > fragments? 
> 
> Since I usually produce PDFs through dvips->ps2pdf I am probably not the
> best person to answer this. I'd assume producing single-page EPS files
> and shoving them through eps2pdf?
> 
> > FYI, I'm in an emacs environment---I type in org-mode (a text file, 
> > basically), then emacs takes care of exporting embedded LaTeX fragments to 
> > PNGs (using a hack of the preview-latex package, I believe). 
> 
> A (suboptimal) solution would be to produce high-resolution PNGs
> (-D 1200) and shrink them to the appropriate size. This would probably
> look terrible onscreen but better on the printer. I don't know enough
> details about the surrounding system you use to be more specific.
> 
> > Also, FYI. Just a hunch but it appears that dvipng may now be used for 
> > other purposes other than quick-and-dirty previews in emacs. (Ex: dvipng's 
> > own webpage says that it's used in wikipedia). It may be time to add an 
> > option for smooth images... or maybe another program can easily provide the 
> > same functionality...
> 
> I wrote that. And part of the WikiMedia code. Problem is, PNGs are pixel
> images, there is just no way around that. The solution would be to use a
> vector-based format.
> 
> Best
> /JÅ
> 
> 
> 
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-- 
--Thanks!
Uriel