1200 DPI Scan Integrity

[rich2005]

Some pictures to go with that.

I was just looking at DivideScannedImages the other day, surprised that it still works in Gimp 2.10.4 (at least it does here)

The print resolution as reported in Gimp is not the same as the scan resolution. Once an image is scanned it has a definite size in pixels. The print resolution is then only if the image is printed.

This is a tif scanned at 1200 ppi. In Gimp the print size is shown as 1200 ppi. Measuring one of the stamps gives a size in pixels of around 1460 pix (a bit skewed)



It looks like you are using the batch option, that is where the 600 ppi line is in the script. I do not know why 1200 does not work.

Scan is divided, (and deskewed) The print size does show 600 ppi but the size of the object is correct, round about the 1460-ish mark. You have not lost any definition only an internal image setting.



If you need to re-set the ppi to 1200 then need to find some script that changes the setting. Not Gimp but ImageMagick

Code:

mogrify -units pixelsperinch -density 1200 *.png

sets the print resolution to 1200 for a folder full of png images.