How To Install CharLS on Fedora 34

CharLS is An optimized implementation of the JPEG-LS standard An optimized implementation of the JPEG-LS standard

Introduction

In this tutorial we learn how to install CharLS on Fedora 34.

What is `CharLS`

An optimized implementation of the JPEG-LS standard for loss less and near loss less image compression. JPEG-LS is a low-complexity standard that matches JPEG 2000 compression ratios. In terms of speed, CharLS outperforms open source and commercial JPEG LS implementations. JPEG-LS (ISO-14495-1/ITU-T.87) is a standard derived from the Hewlett Packard LOCO algorithm. JPEG LS has low complexity (meaning fast compression) and high compression ratios, similar to JPEG 2000. JPEG-LS is more similar to the old loss less JPEG than to JPEG 2000, but interestingly the two different techniques result in vastly different performance characteristics. CharLS 2.0.0 5.fc34 x86_64 117 k CharLS-2.0.0-5.fc34.src.rpm fedora An optimized implementation of the JPEG-LS standard https BSD An optimized implementation of the JPEG-LS standard for loss less and near loss less image compression. JPEG-LS is a low-complexity standard that matches JPEG 2000 compression ratios. In terms of speed, CharLS outperforms open source and commercial JPEG LS implementations. JPEG-LS (ISO-14495-1/ITU-T.87) is a standard derived from the Hewlett Packard LOCO algorithm. JPEG LS has low complexity (meaning fast compression) and high compression ratios, similar to JPEG 2000. JPEG-LS is more similar to the old loss less JPEG than to JPEG 2000, but interestingly the two different techniques result in vastly different performance characteristics.

We can use yum or dnf to install CharLS on Fedora 34. In this tutorial we discuss both methods but you only need to choose one of method to install CharLS.

Install CharLS on Fedora 34 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

Fedora 34 - x86_64                               20 kB/s | 6.6 kB     00:00
Fedora 34 openh264 (From Cisco) - x86_64        1.4 kB/s | 989  B     00:00
Fedora Modular 34 - x86_64                       68 kB/s | 6.5 kB     00:00
Fedora 34 - x86_64 - Updates                    3.5 kB/s | 6.2 kB     00:01
Fedora Modular 34 - x86_64 - Updates             17 kB/s | 5.9 kB     00:00
Metadata cache created.

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

sudo dnf -y install CharLS

Install CharLS on Fedora 34 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

Fedora 34 - x86_64                               20 kB/s | 6.6 kB     00:00
Fedora 34 openh264 (From Cisco) - x86_64        1.4 kB/s | 989  B     00:00
Fedora Modular 34 - x86_64                       68 kB/s | 6.5 kB     00:00
Fedora 34 - x86_64 - Updates                    3.5 kB/s | 6.2 kB     00:01
Fedora Modular 34 - x86_64 - Updates             17 kB/s | 5.9 kB     00:00
Metadata cache created.

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

sudo yum -y install CharLS

How To Uninstall CharLS on Fedora 34

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

sudo dnf remove CharLS

CharLS Package Contents on Fedora 34

/usr/lib/.build-id
/usr/lib/.build-id/21
/usr/lib/.build-id/21/a57c97aae162fd5cb6a991e8c8afead2d021bf
/usr/lib/libCharLS.so.2
/usr/lib/libCharLS.so.2.0
/usr/share/licenses/CharLS
/usr/share/licenses/CharLS/License.txt
/usr/lib/.build-id
/usr/lib/.build-id/e4
/usr/lib/.build-id/e4/db47c5cf6785bbaa7fdb22bc86d6662c9d46a5
/usr/lib64/libCharLS.so.2
/usr/lib64/libCharLS.so.2.0
/usr/share/licenses/CharLS
/usr/share/licenses/CharLS/License.txt

References

[CharLS website](https://github.com/team-charls/charls https://github.com/team-charls/charls)

Summary

In this tutorial we learn how to install CharLS on Fedora 34 using yum and dnf.