How To Install leptonica on CentOS 7

In this tutorial we learn how to install leptonica on CentOS 7. leptonica is C library for efficient image processing and image analysis

Introduction

In this tutorial we learn how to install leptonica on CentOS 7.

What is leptonica

The library supports many operations that are useful on * Document images * Natural images Fundamental image processing and image analysis operations * Rasterop (aka bitblt) * Affine transforms (scaling, translation, rotation, shear) on images of arbitrary pixel depth * Projective and bi-linear transforms * Binary and gray scale morphology, rank order filters, and convolution * Seed-fill and connected components * Image transformations with changes in pixel depth, both at the same scale and with scale change * Pixelwise masking, blending, enhancement, arithmetic ops, etc.

We can use yum or dnf to install leptonica on CentOS 7. In this tutorial we discuss both methods but you only need to choose one of method to install leptonica.

Install leptonica on CentOS 7 Using yum

Update yum database with yum using the following command.

sudo yum makecache

After updating yum database, We can install leptonica using yum by running the following command:

sudo yum -y install leptonica

Install leptonica 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.

sudo dnf makecache

After updating yum database, We can install leptonica using dnf by running the following command:

sudo dnf -y install leptonica

How To Uninstall leptonica on CentOS 7

To uninstall only the leptonica package we can use the following command:

sudo dnf remove leptonica

References

Summary

In this tutorial we learn how to install leptonica on CentOS 7 using yum and dnf.