IMSLP Forums

One thing you can do: have the scanner produce a gray scale image, and convert to black and white using the GIMP. (Colors -> threshold). This allows you to select the optimal threshold manually.

Philip, gratias ago.
Bart

In some of the scores I scanned color is important. Black marks are the composer's, red marks are the editor's. Therefore I uploaded color scans of those files. Some of those aren't very good: I had not yet found out how to do it properly. Now I have, what do I do about replacing the old files? Just...

Another option would be to use OpenOffice.org. Start the word processor (called writer), adapt page margins, and insert > image > scan > request image (the actual words may be different, I use a Dutch version of OpenOffice.org). In the scanner window select 1-bit image format. In this way you can ma...

Thanks again. As I wrote yesterday, in principle it works now. But the HP 1402 was not made for this job. The scans take forever, and at 600 dpi many scans are faulty: parts are vertically squeezed, and at the bottom of the page there is a zone that contains no useful data at all. I'll ask Santa Cla...

It works! The Gimp 2.4 can produce CCITT 4 compressed TIFF files.
Thanks everyone!

Leonard Vertighel wrote: Seems an older version, maybe it doesn't support CCITT? As I said, I tried with 2.6.2.

Curiouser and curiouser! In the repository for Suse Linux, the most recent version of the GIMP is 2.4. I have installed that; see what happens.

Thank you, Carmar and Leonard, but no luck so far. Installation of gscan2pdf fails -- the thing complains about unsatisfied dependencies even after all the packages listed are installed. My GIMP version (version 2.2.17.40) has been translated into Dutch, therefore I don't know the exact English name...

I'm struggling with file sizes, compression, and what not. Here's what I use and how I use it: I have a Linux system and use kooka and a HP 1402 all-in-one for scanning. When I select "lineart" pictures, kooka chooses a black/white threshold itself, and it is always wrong: black stains all...