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vue前端实现人脸识别

2026-02-22 06:29:09VUE

vue前端实现人脸识别

在Vue前端实现人脸识别通常需要结合第三方库或API，以下是几种常见方法：

使用Tracking.js库

Tracking.js是一个轻量级的JavaScript库，专门用于浏览器端的图像处理和对象跟踪。安装依赖后，在Vue组件中引入：

import tracking from 'tracking/build/tracking'
import 'tracking/build/data/face'

初始化人脸检测器并绑定到视频元素：

mounted() {
  const video = this.$refs.video
  const canvas = this.$refs.canvas
  const context = canvas.getContext('2d')

  navigator.mediaDevices.getUserMedia({ video: true })
    .then(stream => {
      video.srcObject = stream
      const tracker = new tracking.ObjectTracker('face')
      tracker.setInitialScale(4)
      tracker.setStepSize(2)
      tracker.setEdgesDensity(0.1)

      tracking.track(video, tracker)
      tracker.on('track', event => {
        context.clearRect(0, 0, canvas.width, canvas.height)
        event.data.forEach(rect => {
          context.strokeStyle = '#a64ceb'
          context.strokeRect(rect.x, rect.y, rect.width, rect.height)
        })
      })
    })
}

使用Face-api.js

Face-api.js是基于TensorFlow.js的人脸识别库，提供更丰富的功能。安装后配置模型路径：

import * as faceapi from 'face-api.js'

async loadModels() {
  await faceapi.nets.tinyFaceDetector.loadFromUri('/models')
  await faceapi.nets.faceLandmark68Net.loadFromUri('/models')
}

实时检测人脸并绘制特征点：

async detectFaces() {
  const video = this.$refs.video
  const canvas = this.$refs.canvas
  const displaySize = { width: video.width, height: video.height }
  faceapi.matchDimensions(canvas, displaySize)

  setInterval(async () => {
    const detections = await faceapi.detectAllFaces(
      video, 
      new faceapi.TinyFaceDetectorOptions()
    ).withFaceLandmarks()

    const resizedDetections = faceapi.resizeResults(detections, displaySize)
    canvas.getContext('2d').clearRect(0, 0, canvas.width, canvas.height)
    faceapi.draw.drawDetections(canvas, resizedDetections)
    faceapi.draw.drawFaceLandmarks(canvas, resizedDetections)
  }, 100)
}

调用云服务API

对于更精确的识别需求，可以集成阿里云、腾讯云或百度AI等平台的人脸识别API：

async callCloudAPI(imageData) {
  const formData = new FormData()
  formData.append('image', imageData)

  const res = await axios.post('https://api.cloudservice.com/face/detect', formData, {
    headers: { 'Authorization': 'Bearer YOUR_API_KEY' }
  })
  return res.data.faces
}