pdftex setting to disable anti-aliasing of PDF viewer

[Martin Scharrer]

On tex.stackexchange.com several similar questions where ask about
blurry PNG images in LaTeX generated PDFs (e.g. see
http://tex.stackexchange.com/q/10975/2975). The blur effect seems to
be different on different zoom levels and with different PDF viewers.
The main conclusion was that this is an anti-aliasing effect of the
selected PDF viewer.

Is there any pdftex or PDF setting to tell the viewer not to use anti-
aliasing for these images or for the whole document? I'm sure the
pdftex experts here can answer that.

Thank you very much,
Martin Scharrer

[William F. Adams]

On May 17, 5:56 pm, Martin Scharrer <martin.schar...@gmail.com> wrote:
> On tex.stackexchange.com several similar questions where ask about

> blurry PNG images in LaTeX generated PDFs (e.g. seehttp://tex.stackexchange.com/q/10975/2975). The blur effect seems to

> be different on different zoom levels and with different PDF viewers.
> The main conclusion was that this is an anti-aliasing effect of the
> selected PDF viewer.
>
> Is there any pdftex or PDF setting to tell the viewer not to use anti-
> aliasing for these images or for the whole document? I'm sure the
> pdftex experts here can answer that.

I doubt it's a sensible setting one could toggle in the .pdf easily
(maybe you could re-set the user's pdf viewer option, but that's kind
of rude), since it's not something intrinsic to the .pdf or graphic
(though one can turn it on for a given pixel graphic by setting the
interpolation key for that graphic on)

FWIW, if you do toggle said setting, you'll next get complaints that
the graphics are looking crude and jagged at various resolutions. If
this is a real issue, see if the graphics can be re-created as vector
elements which will re-draw nicely as resolution changes.

William