Hi,

I have many raster images, combined with vector images, in inkscape SVG files. I am exporting these to PDF + TeX so that the images can be included into a Latex document which is then compiled to a PDF file. This was previously working well, however I recently noticed that the raster images are being "smoothed" when they are exported. This did not used to happen. Some of the images are very pixellated and have very large, square pixels. This is the behaviour I need to preserve -- I cannot have the smoothed or anti-aliased in any way. Unfortunately some sort of smoothing is happening, and bright square pixels appear as fuzzy diamonds.

I believe that I was probably using an older version of inkscape (0.46 or 0.47) previously, and it would appear that something has changed in between then and now (0.48.4.r9939). I urgently need to fix this problem as the document (my PhD thesis!) must be submitted in under a week. After searching the forums I've tried to disable bitmap antialiasing (Inkscape preferences -> bitmaps -> oversample bitmaps none) but this doesn't change anything.

Any help on this matter would be greatly appreciated.

Many thanks.

Hi.

Open the saved pdf in a notepad and change the "interpolate - true" part to "interpolate false", resulting in a pixelated render through a pdf viewer.

http://www.inkscapeforum.com/viewtopic.php?f=5&t=15829#p59223

Ah amazing. Somehow I didn't think to search for the word "blurry". This is much better than my makeshift solution of opening the file in an older version of Inkscape (0.48.0 I think). Thank you so much for your help.

I know I'm resurecting an old post, but this very problem just bit me.
I wasn't able to edit the pdf in my text editor, somehow things would get corrupted because my text editor tried figuring out the encoding of what is mostly a binary file. So I wrote a short quick-and-dirty python script to do the trick. I thought I would share it here, it might help someone someday.


Warning: works with python 2.x, definitely not python 3, since in python 3 all the strings are unicode. Here, I use strings as raw byte arrays.

Hi.

Clever! New way to use strings.