Re: How to automatically figuring out the optimal resolution for a pdf file?

On Sun, 24 Apr 2011 20:28:37 -0500
Peng Yu <[email protected]> wrote:
| On Sat, Apr 23, 2011 at 2:33 AM, Anthony Thyssen
| <[email protected]> wrote:
| >
| > And how would acrobat do that!  That is the question!
| >
| > PDF's (or postscript) are not supposed to have a 'ideal density' or
| > resolution. But if they contain raster images, those raster images may
| > have a ideal resoltuion.  However a PFD could easily have multiple
| > rasters each with different ideal resolution.
| >
| > So how any program can pick an ideal resolution is beyond me!
| 
| I think that you may not need to think about very complex cases. The
| simplest case is that each pdf page only have one image (as it is
| originally from a tif file). The best resolution for any page is just
| the resolution of the original image. Is this very difficult to be
| added in convert?
| 

Actually convert (AKA ImageMagick) does not deal with PDF files.
IT passes it to ghostscript.  However the original problem of how
to determine the 'ideal resolution' remains.



  Anthony Thyssen ( System Programmer )    <[email protected]>
 --------------------------------------------------------------------------
   "You must realize that the computer has it in for you.  The irrefutable
   proof of this is that the computer always does what you tell it to do."
 --------------------------------------------------------------------------
   Anthony's Castle     http://www.ict.griffith.edu.au/anthony/

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