Jeremy C. Reed wrote:
On Thu, 2 Aug 2007, John Pye wrote:
I suspect that your problem will be coming from the fact that
screenshots are ~75-90 dpi, but that you are then printing them on a
page at something like 300 dpi. Normally this means that the images are
scaled up so that they have the right number of pixels on the page. This
means adding new pixels, which are added by interpolation, meaning that
your nice crisp screenshot images are ending up blurred.
The solution to this as far as I can tell is to resize the images up to
something close to 300 dpi using some tool *outside* LyX. In GIMP this
can be done using the Image->Scaling then selecting Interpolation->'None
(Fastest)' after entering a new pixel size.
Thank you. Thank you!
I couldn't figure out how to get the resolution to change without also
changing my width and height. Thanks for telling me "None" as that appears
to work for me.
Also I use the GIMP to save it in the exact size I want so I don't have to
scale using \includegraphics[scale=a.bc]. I am saving as PNG images.
My final book PDF is probably going to grow from less than 10MB to over
100MB due to the new PNGs, but I think my printer will accept that.
I read that pdflatex accepts JPEG, TIFF, PNG, or PDF. I assume that means
that a JPEG, TIFF, and PNG are the supported raster image formats for
embedding in a PDF. Does anyone know if using a tiff would be better than
a zero compressed png?
PNG is a lossless format, so it is OK even if it is compressed.
(PNG compression does not cause any errors or blurring,
quite unlike jpeg.) So feel free to use compressed png in
order to get a smaller file. TIFF is the same as png - a lossless
format. Either should work exactly the same, although the
TIFF might be bigger.
Helge Hafting
