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Thread: problems setting DPI in TIFF files
problems setting DPI in TIFF files
user name
 2006-10-09 23:35:06 

  


  

    
Hello,


I'm generating some TIFF files using the PIL. These files then get sent to another applicaion which prints them. I have been told that there is a field in TIFF files which sets the image resolution. The documentation for 
1.1.5 states that:

"
The open method sets the following info properties:


compression
Compression mode.
dpi
(1.1.5) Image resolution as an (xdpi, ydpi) tuple, where
applicable.  You can use the tag attribute to get more
detailed information about the image resolution.
"
I downloaded and cmpiled 1.1.5, but these attributes do not show up. Here's an example:

>>>; import Image
>>> im = Image.open
('Bishop_Bob.tiff')
>>> im.dpi
Traceback (most recent call last):
&nbsp; File "<stdin>&quot;, line 1, in ?
AttributeError: TiffImageFile instance has no attribute 'dpi'

I tried using the "
im.tag" attribute, but I cannot work out what tag number I should be looking at. In any case, none of the tags present contain the value of 72, which seems to be the default resolution of the image.

I hope someone out there can help, I've been trying to crack this problem for a few days now.



Thanks,



  

  
  
   
     
    






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