pct-scanner-scripts is obviously not maintained anymore.
I am hereby orphaning it. Please only adopt if you can afford the time.

Description: scan and create merged DjVu and PDF documents for archiving
  This package contains a script and configuration system to easily
  scan documents and create digital archives. It can create DjVu
  PDF and JPEG outputs, in merged and individual files. It also has
  a configuration file system where different configurations can be
  defined, making it easy to switch between configurations.