How To Install unpaper on CentOS 7
Introduction
In this tutorial we learn how to install unpaper
on CentOS 7.
What is unpaper
unpaper is a post-processing tool for scanned sheets of paper, especially for book pages that have been scanned from previously created photocopies. The main purpose is to make scanned book pages better readable on screen after conversion to PDF. Additionally, unpaper might be useful to enhance the quality of scanned pages before performing optical character recognition (OCR). unpaper tries to clean scanned images by removing dark edges that appeared through scanning or copying on areas outside the actual page content (e.g. dark areas between the left-hand-side and the right-hand-side of a double- sided book-page scan). The program also tries to detect disaligned centering and rotation of pages and will automatically straighten each page by rotating it to the correct angle. This process is called “deskewing”.
We can use yum
or dnf
to install unpaper
on CentOS 7. In this tutorial we discuss both methods but you only need to choose one of method to install unpaper.
Install unpaper on CentOS 7 Using yum
Update yum database with yum
using the following command.
After updating yum database, We can install unpaper
using yum
by running the following command:
Install unpaper on CentOS 7 Using dnf
If you don’t have dnf installed you can install DNF on CentOS 7 first.
Update yum database with dnf
using the following command.
After updating yum database, We can install unpaper
using dnf
by running the following command:
How To Uninstall unpaper on CentOS 7
To uninstall only the unpaper
package we can use the following command:
References
Summary
In this tutorial we learn how to install unpaper
on CentOS 7 using yum
and dnf
.