Hi! We migrated from "Code-Industry ImagePrinter" to "PDFCreator 1.2.1", but now we have some issues with the further image processing, because the TIF pictures are looking different than they did before (in both cases 2-color G4 fax encoding). "PDFCreator 1.2.1" (or Ghostscript) puts a lot of small triangles into the grey areas during the binarization process. The problem is that our following image processing software doesn't like this triangles at all (sadly we can't change this software anymore).
Is it possible to change this "dithering method" in PDFCreator in some way? Until now I tried to set "-sDEVICE=psgray" and "-sDEVICE=psmono" as additional Ghostscript-Parameter in PDFCreator. The first parameter produced a corrupt TIF file (in fact it is a ps file with tif file-extension) and the second one produced no file at all...
When I'm printing a PDF file with Acrobat Reader I can activate "print as picture" in the printing menu. In this case PDFCreator creates a perfect TIF picture without triangles. But the print process takes much more time in this case (an average document needs a few minutes for printing instead about 10 seconds).
In this thread I saw that "ThierryF" had the problem that grey was in "grids": http://www.pdfforge.org/forum/help/7016-2-colors-bmp-printing-doesnt-respect-bw-picture
Grids should be okey for our image processing software, just the triangles are problematic. Normal binarization (just strong contrast with a fixed threshold for black and white) would be the best solution for our image processing software.
Any hints or ideas?