Face Detection with OpenCV in Python

Face Detection comes under Artificial Intelligence, where a machine is trying to recognize a person based on the facial features trained into its system. It is a process where the face is identified through a digital image. Face Detection can be applied in various fields. Face Detection is highly utilized for security purposes. It also has a considerable contribution to biometrics, entertainment, law enforcement, and ensuring personal safety. You can also track people through surveillance in real-time. Hence, Facial Recognition is a program through which you can identify an individual and confirm a person’s identity using digital images. 

Facial Recognition is not only adhered to detecting faces in real-time, and you can now perform it on images and videos. In general, Face Detection can also be categorized as biometric security. We also have fingerprint recognition, voice recognition, and eye retina or iris recognition like Face Detection. Face Detection comes in handy in the security domains and law enforcement, where Face Recognition is crucial in some areas. You may now be very familiar with it as you daily come across it while unlocking your mobile phones. 

Face Recognition program gets trained with many datasets of photos to provide an appropriate outcome. The first step in face Recognition is that the camera detects the concerned face among the crowd of faces and non-face things. The image captured may be from any angle, but the program is designed in such a way that it recognizes the required person. The face image is captured and analyzed, and it may rely on 2D or 3D technology for detecting these images. 

The major work done here is that it analyzes your facial geometry. It may consider the distance between your eyes, the distance from your forehead to chin. It takes a good account of the shape of your ears, chin, and the length of your lips, the depth of your eye sockets, and much more details of your face which helps the Face Detecting program get enough data in its database, which helps it in Face Recognition. The sole reason is to get a good detail of your features to match the elements and give you the most appropriate answer.

If you are new to this AI field and want to gain knowledge about how Face Detection with OpenCV using Python works, first get a good enclosure on the introduction to Face Detection and recognition. Once you get your theory sorted, you can further move on to the technical part, where you can get an introduction to OpenCV, the library mainly used to process and analyze the pictures and videos. You can also explore the various application of Face Recognition which are highly popular and in use. Face Recognition using deep learning is a fantastic application that comes in handy for security purposes.

Face Recognition Python is the best choice to code a successful program. Python has an extensive library that allows you to code an optimized Face Detection program. Face Detection using Python is a better approach for beginners to understand the program’s workflow. Many developers also believe that OpenCV Face Recognition using OpenCV is the better approach for achieving Face Recognition successfully. Face Recognition using Python is adapted because this programming language provides all the required libraries that support the purpose of Face Detection.

If you wish to install OpenCV on your system, you can install opencv-python and opencv-contrib-python on your console. OpenCV Face Recognition is the most popular among developers. Haar Cascade is a library that allows you to classify the objects based on the trained dataset. The result from this library is stored in an XML file which stores the trained result. If you want a more efficient answer, you must pass the high-resolution images. Haar Cascade is required to detect faces through a webcam.

OpenCV is free of cost and has an open-source library. It is faster and is written in C/C++ language. It works better with less system RAM. OpenCV is compatible with Windows, MacOS, and Linux systems. It is an open-source computer vision and a machine learning software library. It was built to provide a common infrastructure for the applications of computer vision. OpenCV is also helpful in accelerating machine perceptions in commercial products. It is a constructive library for developers making software businesses more manageable.

You must install OpenCV, dlib, and Face_recognition before starting to code the program. The dlib library is used to implement deep metric learning, which is very helpful in determining the face embeddings used in the actual recognition process. Face_recognition is a very easy library to understand and to work with. In the Face Recognition program, this library places a significant role. But before installing the face_recognition library, you must install the dlib library. 

For efficient Face Recognition, you must train your data with the datasets of images. It is better to create folders where you store the images, and each folder must have images of one person. If you have a shortage of datasets, you can download them from the web. There are free datasets available on the web that are downloadable. Save these datasets into the folders through which you intend to train your program. Face_recognition plays an important role when you are implementing the Face Detection function.

If you want a brief explanation on the implementation of Face Detection with OpenCV in Python, enroll in Great Learning’s free course called “Face Detection with OpenCV in Python”. This course is meant for beginners and will introduce you to the essential concepts that help you better understand Face Detection using OpenCV. Through this course, you will not only get a better idea of Face Detection theoretically, but you also will gain practical knowledge regarding it. There is a hands-on demonstration of Face Detection with OpenCV in Python which will help you enhance your practical knowledge. Enroll in this free course today and attain free certification.