Quote:
Originally Posted by mike.foster
Hi,
I have a book whose pages are yellow/brown-ish ( sample). It's for reading with an iPad. What command can I use with k2pdfopt to increase the contrast (no need to shrink)? |
Code:
k2pdfopt -mode copy -c- -cmax 3 myfile.pdf
You can increase the cmax value if you like. This worked pretty well on your image. Make the value negative to force it (when it is positive, it just acts as a ceiling--k2pdfopt tries to pick an optimum).
Edit #1: See attachment for your sample (page 1) and the conversion (page 2).
Edit #2: Out of curiosity, I added to the attachment the default conversion done by Scan Tailor (v0.9.11.1) on page 3.