Dlib is C++ library
that contains algorithms and tools for solving real world problems in C++. It
is used in a wide range of domains including mobile phones, embedded devices
etc. it is an open-source library, meaning it is available for everyone to use
free of cost.

Features:

<!-  High Quality Code:

The dlib library's code is well-written and concise.
Unit test lines of code to library lines of code ratio is roughly 4:1. Since
this library may be used without any additional packages, it is simple to use.
Only the APIs that come with an OS out of the box are necessary. Additionally,
this library doesn't require installation or configuration to utilise it.

MMachine Learning Algorithms

It can be used for working on machine learning and
deep learning algorithms. It is based on Support Vector Machines for
classification and regression. It can be used for solving optimization problems
associated with structural SVM. It has tools for problems like sequence
labelling, assignment problems, object detection etc. it can also be used for
clustering algorithms and implementing linear or kernel k-means, Chinese
Whispers, and Newman clustering.

<!-  Numerical Algorithms

Numerous mathematical problems like linear algebra and
mathematical operations are defined for matrix such as decomposition,
transpose, trigonometric functions etc.

It can also solve several quadratic equations.

 Graphical Model Algorithms

The join tree approach is used in the Bayesian network
for precise inference. In order to make approximations in a Bayesian network,
it also employs the markov chain monte carlo algorithm.

Im  Image Processing

It has routines for writing and reading common well
known image formats. It supports automatic color space conversion between
different pixel types. It can also be used for common image operations such as
edge finding and morphological operations. It can also be used for frontal face
detection and object pose estimation.

Th  Threading

A portable and user-friendly threading API is provided
by the library. Additionally, it offers a message-passing channel for
communication between processes and between threads. It has a timer object that
can produce events with predictable spacing.

Ne  Networking

A straightforward and mobile TCP sockets API is
offered by dlib. This object will aid in the creation of TCP-based servers. The
C++ iostreams library can communicate with TCP sockets thanks to the use of the
iostream and streambuf classes. Additionally, it features a straightforward
HTTP server object that enables users to incorporate a web server into their
projects.

GU GUI

The library offers a basic, portable GUI API. Numerous
widgets have been implemented on top of the fundamental GUI API. The entire
dlib GUI toolkit is thread safe, in contrast to many other GUI toolkits.

Ge General Uses

Some of dlib's general characteristics include:

To convert between big- and little-endian byte
orderings, create a type-safe object.

A program that can interpret and validate command
lines with a variety of parameters and options

A parser for XML

An item with base64 conversion capabilities

Different memory pooling mechanisms are implemented
using memory manager objects.

A program that makes it simple to call C++ from MATLAB