Introduction: Face and Eye Detection Using OpenCv With Raspberry Pi

Introduction to Project:

In this project we are using OpenCv in Raspberry pi. This project is used to detect the human Face and eye with the help of OpenCv tool. In order to do object detection with cascade files, you first need cascade files. For the extremely popular tasks, these file already exist.

Step 1: Software Used

1.Raspian OS:

This is the recommended os for raspberry pi. You can also installed other OS from third party. Raspbian OS is debian based OS. We can install it from noobs installer. you can get the link


PuTTY is an SSH and telnet client, developed originally by Simon Tatham for the Windows platform. PuTTY is open source software that is available with source code and is developed and supported by a group of volunteers. Here we are using putty for accessing our raspberry pi remotely. You can download PuTTY here


OpenCV (Open Source Computer Vision Library) is an open source computer vision and machine learning software library. OpenCV was built to provide a common infrastructure for computer vision applications and to accelerate the use of machine perception in the commercial products. Being a BSD-licensed product, OpenCV makes it easy for businesses to utilize and modify the code. The library has more than 2500 optimized algorithms, which includes a comprehensive set of both classic and state-of-the-art computer vision and machine learning algorithms. These algorithms can be used to detect and recognize faces, identify objects, classify human actions in videos, track camera movements, track moving objects and extract 3D models of objects.

Step 2: Hardware Used

1. Raspberry Pi:

This is the latest version of raspberry pi. In this we have inbuilt Bluetooth and wi-fi, unlike previously we have to use Wi-Fi dongle in one of its usb port. There are total 40 pins in RPI3. Of the 40 pins, 26 are GPIO pins and the others are power or ground pins (plus two ID EEPROM pins.) There are 4 USB Port and 1 Ethernet slot, one HDMI port, 1 audio output port and 1 micro usb port and also many other things you can see the diagram on right side. And also we have one micro sd card slot wherein we have to installed the recommended Operating system on micro sd card. There are two ways to interact with your raspberry pi. Either you can interact directly through HDMI port by connecting HDMI to VGA cable, and keyboard and mouse or else you can interact from any system through SSH(Secure Shell). (For example in windows you can interact from putty ssh.) Figure is given above.

2. Raspberry Pi Camera:

The Raspberry Pi camera module can be used to take high-definition video, as well as stills photographs. It’s easy to use for beginners, but has plenty to offer advanced users if you’re looking to expand your knowledge. There are lots of examples online of people using it for time-lapse, slow-motion and other video cleverness. You can also use the libraries we bundle with the camera to create effects.

Step 3: Installation of OpenCv

Here are the Installation steps:

1) sudo apt-get update
2) sudo apt-get upgrade

3) sudo apt-get install build-essential

4) sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev

5)sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev

6) sudo apt-get install python-opencv 7) sudo apt-get install python-matplotlib

Step 4: Configure and Enable Camera

For Face and Eye Detection you have to Configure PiCamera. Pi Camera Enable Steps are given Above.

After following these Steps first you want Check Camera is enable or not. by taking one picture for this command: sudo raspistill -o filename.jpg

If camera is enabled successfully then you get the picture in the same directory.

Step 5: Code for Project

Here is a Link of Project Code is give below. and you can also go our GitHub link

Step 6: Video of Project

The whole project description are given in the above video

Congratulations you have successfully finished your project

If have any doubt regarding this project feel free to comment us below or you can mail us on

And if you want to learn more about these type of project then feel free to visit our youtube channel

Thanks & Regards,

Deligence Technologies


About This Instructable




Bio: We are a team of IoT & Embedded Systems developers. We are working in Raspberry Pi and Arduino.
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