{"id":4210,"date":"2023-11-04T23:14:08","date_gmt":"2023-11-04T23:14:08","guid":{"rendered":"http:\/\/localhost:10003\/how-to-create-a-face-recognition-app-with-react-and-face-api\/"},"modified":"2023-11-05T05:47:57","modified_gmt":"2023-11-05T05:47:57","slug":"how-to-create-a-face-recognition-app-with-react-and-face-api","status":"publish","type":"post","link":"http:\/\/localhost:10003\/how-to-create-a-face-recognition-app-with-react-and-face-api\/","title":{"rendered":"How to Create a Face Recognition App with React and Face API"},"content":{"rendered":"
In this tutorial, we will learn how to create a face recognition app using React and the Face API. Face recognition is a technology that can identify and verify the identity of a person based on their unique facial features. The Face API is a powerful library that provides various convenient methods for implementing face recognition in your applications.<\/p>\n
By the end of this tutorial, you will have a basic understanding of how face recognition works and how to implement it in a React application using the Face API.<\/p>\n
To follow this tutorial, you will need:<\/p>\n
Let’s start by creating a new React application. Open your terminal and run the following command:<\/p>\n
npx create-react-app face-recognition-app\n<\/code><\/pre>\nThis will create a new directory called face-recognition-app<\/code> with all the necessary files for a basic React application.<\/p>\nNow, navigate to the newly created directory:<\/p>\n
cd face-recognition-app\n<\/code><\/pre>\nTo start the React development server, run the following command:<\/p>\n
npm start\n<\/code><\/pre>\nYou should see the default React application running at `http:\/\/localhost:3000`.<\/p>\n
Installing Dependencies<\/h2>\n
The next step is to install the necessary dependencies for our face recognition app. We will need the face-api.js<\/code> library to perform face recognition tasks. Run the following command to install it:<\/p>\nnpm install face-api.js\n<\/code><\/pre>\nThis will install the face-api.js<\/code> library in our application.<\/p>\nLoading Face API Models<\/h2>\n
Before we can start using the Face API, we need to load the necessary face detection and face recognition models. Create a new folder called models<\/code> inside the public<\/code> folder, and download the following models into the models<\/code> folder:<\/p>\n\n- face_detection_model-weights_manifest.json<\/a><\/li>\n
- face_detection_model-shard1<\/a><\/li>\n
- face_detection_model-shard2<\/a><\/li>\n
- face_landmark_68_model-weights_manifest.json<\/a><\/li>\n
- face_landmark_68_model-shard1<\/a><\/li>\n
- face_landmark_68_model-shard2<\/a><\/li>\n
- face_recognition_model-weights_manifest.json<\/a><\/li>\n
- face_recognition_model-shard1<\/a><\/li>\n
- face_recognition_model-shard2<\/a><\/li>\n<\/ul>\n
To download these files, right-click on each link and select “Save link as…”. Place the downloaded files into the models<\/code> folder.<\/p>\nCreating the FaceRecognition Component<\/h2>\n
Now, let’s create a new React component called FaceRecognition<\/code> that will handle the face recognition functionality in our application.<\/p>\nCreate a new file called FaceRecognition.js<\/code> inside the src<\/code> folder and add the following code:<\/p>\nimport React, { useEffect, useRef } from 'react';\nimport * as faceapi from 'face-api.js';\n\nconst FaceRecognition = () => {\n const videoRef = useRef(null);\n\n useEffect(() => {\n const loadModels = async () => {\n await faceapi.nets.tinyFaceDetector.loadFromUri('\/models');\n await faceapi.nets.faceLandmark68Net.loadFromUri('\/models');\n await faceapi.nets.faceRecognitionNet.loadFromUri('\/models');\n };\n\n loadModels();\n }, []);\n\n useEffect(() => {\n const startCamera = async () => {\n const video = videoRef.current;\n\n if (navigator.mediaDevices.getUserMedia) {\n await navigator.mediaDevices.getUserMedia({ video: true })\n .then((stream) => {\n video.srcObject = stream;\n })\n .catch((error) => console.error('Error accessing camera:', error));\n }\n };\n\n startCamera();\n }, []);\n\n return (\n <div>\n <video ref={videoRef} autoPlay muted \/>\n <\/div>\n );\n};\n\nexport default FaceRecognition;\n<\/code><\/pre>\nIn the code above, we import the necessary dependencies and create a functional component called FaceRecognition<\/code>. Inside this component, we define two useEffect<\/code> hooks. The first hook is responsible for loading the face detection, face landmark, and face recognition models from the models<\/code> folder. The second hook starts the camera and displays the video stream on the page.<\/p>\nWe also create a videoRef<\/code> using the useRef<\/code> hook, which is used to reference the video element in the JSX code.<\/p>\nFinally, we render a video<\/code> element with the ref<\/code> attribute set to the videoRef<\/code> variable.<\/p>\nAdding the FaceRecognition Component to App.js<\/h2>\n
Now that we have created the FaceRecognition<\/code> component, let’s include it in the main App.js<\/code> file.<\/p>\nOpen the src\/App.js<\/code> file and replace the existing code with the following:<\/p>\nimport React from 'react';\nimport FaceRecognition from '.\/FaceRecognition';\n\nconst App = () => {\n return (\n <div className=\"App\">\n <h1>Face Recognition App<\/h1>\n <FaceRecognition \/>\n <\/div>\n );\n};\n\nexport default App;\n<\/code><\/pre>\nIn the code above, we import the FaceRecognition<\/code> component and render it inside the main App<\/code> component.<\/p>\nNow, if you go back to your browser and refresh the page, you should see the “Face Recognition App” title and a video stream from your camera.<\/p>\n
Detecting Faces<\/h2>\n
The next step is to detect faces in the video stream and draw bounding boxes around them.<\/p>\n
Add the following code inside the loadModels<\/code> function in the FaceRecognition<\/code> component:<\/p>\nawait faceapi.nets.tinyFaceDetector.loadFromUri('\/models');\nawait faceapi.nets.faceLandmark68Net.loadFromUri('\/models');\nawait faceapi.nets.faceRecognitionNet.loadFromUri('\/models');\n<\/code><\/pre>\nThis code loads the required face detection, face landmark, and face recognition models from the models<\/code> folder.<\/p>\nNext, add the following code inside the startCamera<\/code> function:<\/p>\nconst canvas = faceapi.createCanvasFromMedia(video);\ndocument.body.append(canvas);\n\nconst displaySize = {\n width: video.width,\n height: video.height,\n};\nfaceapi.matchDimensions(canvas, displaySize);\n\nsetInterval(async () => {\n const detections = await faceapi.detectAllFaces(video, new faceapi.TinyFaceDetectorOptions()).withFaceLandmarks().withFaceDescriptors();\n const resizedDetections = faceapi.resizeResults(detections, displaySize);\n\n canvas.getContext('2d').clearRect(0, 0, canvas.width, canvas.height);\n faceapi.draw.drawDetections(canvas, resizedDetections);\n faceapi.draw.drawFaceLandmarks(canvas, resizedDetections);\n}, 100);\n<\/code><\/pre>\nThis code creates a new canvas element dynamically and appends it to the document.body<\/code>. It also sets up the display size of the canvas based on the width and height of the video stream.<\/p>\nInside the setInterval<\/code> function, we use the faceapi.detectAllFaces<\/code> method to detect faces in the video stream using the TinyFaceDetector. We also use the withFaceLandmarks<\/code> and withFaceDescriptors<\/code> options to get additional information about the detected faces.<\/p>\nWe then resize the detection results based on the display size and draw bounding boxes around the detected faces using the drawDetections<\/code> and drawFaceLandmarks<\/code> methods.<\/p>\nFinally, we clear the canvas on each iteration to remove the previously drawn bounding boxes.<\/p>\n
Conclusion<\/h2>\n
In this tutorial, we learned how to create a face recognition app using React and the Face API. We loaded the necessary face detection, face landmark, and face recognition models, started the camera, and detected faces in the video stream.<\/p>\n
You can further enhance the app by adding features like face recognition and displaying the names of recognized faces. The Face API provides various methods to achieve these functionalities.<\/p>\n
Feel free to experiment with different face recognition features and explore the capabilities of the Face API.<\/p>\n
Happy coding!<\/p>\n","protected":false},"excerpt":{"rendered":"
In this tutorial, we will learn how to create a face recognition app using React and the Face API. Face recognition is a technology that can identify and verify the identity of a person based on their unique facial features. The Face API is a powerful library that provides various Continue Reading<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[207,1101,229,1706,1708,1709,41,1707,679,33,1705],"yoast_head":"\nHow to Create a Face Recognition App with React and Face API - Pantherax Blogs<\/title>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\t\n\t\n\t\n