[magick-users] jpg to eps keeping all pixels

Anthony Thyssen anthony at griffith.edu.au
Tue Jan 2 19:35:41 CST 2007


luis on  wrote...
| Hugemann a écrit :
| >> How can I pre-calculate the "-density 72" and "density 28.34"
| >> with the data I get from identify ?
| > 
| > AFAIK, identify cannot perform this task. I also tried "jhead.exe" which 
| > seems to work nicely with IM, but it also gives no information on the 
| > xyresolution. 
| 
| With the help of Scott Spearman I found this
| 
| $ identify -verbose *.jpg | grep -E '^Ima|Geo|Res|Uni'
| Image: bugzilla_add_patch.jpg
|    Geometry: 800x600
|    Units: PixelsPerCentimeter
| Image: bugzilla_choose_product.jpg
|    Geometry: 800x600
|    Units: PixelsPerCentimeter
| Image: bugzilla_enter_bug.jpg
|    Geometry: 809x588
|    Resolution: 95x96
|    Units: PixelsPerInch
| Image: bugzilla.jpg
|    Geometry: 800x600
|    Units: PixelsPerCentimeter
| 
| As you can see sometimes (bugzilla_enter_bug.jpg) jpeg file have the
| "Resolution" info.
| 
Note however that Photoshop does not use the normal resolution info. It
looks it up from its own metadata additions  :-(


  Anthony Thyssen ( System Programmer )    <A.Thyssen at griffith.edu.au>
 -----------------------------------------------------------------------------
    This was a fatal mistake for the Kzinti, ...  the reason humanity had
    decided to study war no more, was that humans were so very, very good
    at it!                         -- "Man-Kzin Wars IV" --  Larry Niven
 -----------------------------------------------------------------------------
     Anthony's Home is his Castle     http://www.cit.gu.edu.au/~anthony/


More information about the Magick-users mailing list