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Getting Started:
    1. Windows
  Text Menu
  (now with video!)
  2. Linux
  Ubuntu
  Env vars
  3. Mac OSX
  4. Help in other languages

FAQ | Forum

Customizing K2PDFOPT:
    1. K2pdfopt GUIs
    2. Disabling the Windows GUI
    3. The interactive menu
    4. List of command-line options
    5. Using a shortcut
  (now with video!)
  6. Using the K2PDFOPT environment variable
  7. Using the command line

Adjusting the output:
    1. Screen Size
    2. Increasing the magnification
    3. Landscape mode
    4. Output File Size
    5. Setting Margins
    6. Color Output
    7. Uneven Line Breaks/ Excess Margins

Processing Options:
    1. Showing Markings
    2. OCR
    3. Native PDF
  (now with video!)
    4. Auto-Straightening
    5. Ignoring Borders/ Headers/Footers
    6. Detecting Columns
    7. Protecting Regions
    8. Column Order
    9. Right-to-Left Page Scanning
    10. Using Ghostscript
 
  AUTO-STRAIGHTENING
Here we have an example where I intentionally skewed the scanned pages of a book to demonstrate the auto-straightening option (-as) with k2pdfopt. This example needs more than just auto-straightening, though, it also needs the -m option (see ignoring borders) and the -col option to force only two columns to be detected, otherwise the wide spacing of the words fools k2pdfopt into thinking there are sub-columns in some places. Note that the page is so tilted that I couldn't just put -as, since it defaults to a max of 4 degrees of correction. I had to specify up to 5 degrees of correction (-as 5).


Original File
 
Default Conversion --
the page is too tilted, so
k2pdfopt can't isolate any
columns or rows of text.

 
Using -as 5 -m 0.5 -col 2.
K2pdfopt now can isolate the columns.

Window GUI auto-straighten checkbox

In the text menu versions of k2pdfopt (OSX and Linux), you can also select (a) Auto-straighten from the k2pdfopt interactive settings menu.

 

This page last modified
Thursday, 09-Feb-2017 19:56:13 MST