MobileRead Forums - View Single Post - How to remove gray and dark background from a scanned PDF?

thebestjeter · 09-07-2011, 02:15 AM

I usually download PDFs file of old books or hard to find titles and many of them have gray or extremely dark backgrounds which makes them difficult to read on my Kindle DXG. I would like to be able to remove the background in those PDF, keeping the foreground intact.

Most of those PDF are poetry, so OCR is simply impossible because of they usually have complex layout.

09-07-2011, 02:15 AM	#1
thebestjeter Addict Posts: 208 Karma: 757546 Join Date: Sep 2010 Device: Kindle 3 Wifi and Kindle DX Graphite	How to remove gray and dark background from a scanned PDF? I usually download PDFs file of old books or hard to find titles and many of them have gray or extremely dark backgrounds which makes them difficult to read on my Kindle DXG. I would like to be able to remove the background in those PDF, keeping the foreground intact. Most of those PDF are poetry, so OCR is simply impossible because of they usually have complex layout. Attached Thumbnails Last edited by thebestjeter; 09-07-2011 at 02:51 AM.