vue+tracking活体检测（人脸识别）

下载tracking.js

注意：静态文件只需要build，复制build到项目的assets文件目录中，按需引入

<template>
  <div class="face">
      <div class="face-meiti">
        <div class="tip">{{tip}}</div>
        <video ref="video" width="200" height="200"  preload autoplay loop muted playsinline :webkit-playsinline="true"></video>
        <canvas ref="canvas" width="320" height="240"></canvas>
      </div>
    <img :src="src" alt="">
    <p>{{getUserMedia}}</p>
  </div>
</template>

<script>
import tracking from '@/assets/tracking/tracking-min.js';
import '@/assets/tracking/data/face-min.js';
export default {
  data() {
    return {
      tip:'请正对摄像头',
      mediaStreamTrack:null,
      video:null,// 播放器实例
      trackerTask:null, //tracking实例
      uploadLock: true, // 上传锁
      faceflag:false,//是否进行拍照
      src:'',
      getUserMedia:''
    }
  },
  mounted() {
    this.init();
  },
  methods: {
    init() {
      const _this = this;
      this.video = this.mediaStreamTrack = this.$refs.video;
      let canvas = this.$refs.canvas;
      let context = canvas.getContext('2d', {willReadFrequently: true});
      // this.getUserMedia = navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;
      //
      // navigator.getUserMedia({'video':true},function (stream) {
      //   _this.video.srcObject = stream
      // },function (err) {
      //   console.error('摄像头调用失败')
      // })
      this.initTracker(canvas, context)
    },
    initTracker(canvas, context){
      const _this = this;
      // 固定写法
      let tracker = new window.tracking.ObjectTracker('face');
      tracker.setInitialScale(4);
      tracker.setStepSize(2);
      tracker.setEdgesDensity(0.1);
      // //摄像头初始化
      this.trackerTask = window.tracking.track(this.video, tracker, {
        camera: true
      });
      tracker.on('track', function (event){
        if(event.data.length == 0){
          if(!_this.faceflag){
            _this.tip = '未检测到人脸'
          }
        }else if(event.data.length > 0){
          _this.tip = '识别成功，正在拍照，请勿乱动~';
          event.data.forEach(function(rect) {

            context.strokeStyle = '#a64ceb';
            context.strokeRect(rect.x, rect.y, rect.width, rect.height);

            if(!_this.faceflag){// 检测到人脸进行拍照，延迟两秒
              _this.faceflag = true
              context.drawImage(_this.video, 0, 0, canvas.width, canvas.height);
              let base64Img = canvas.toDataURL('image/jpeg');
              _this.src = base64Img
              setTimeout(function (){
                _this.faceflag = false
              }, 2000)
            }
          });
        }
        // else{
        //   _this.tip = '请处于相对空旷的环境'
        // }
      })
    }
  }
}
</script>
<style lang="scss">
.face{
  .face-meiti{
    position: relative;
    .tip{
      text-align: center;
      font-size: 12px;
      padding-bottom: 15px;
    }
    video{
      width: 200px;
      height: 200px;
      -webkit-border-radius: 150px;
      -moz-border-radius: 150px;
      border-radius: 150px;
      object-fit: cover;
      border: 2px solid #000;
      box-sizing: border-box;
    }
    canvas{
      position: fixed;
      left: 100vw;
      top: 0;
      z-index: -1;
      width: 200px;
      height: 200px;
      background: #000;
    }
  }
  img{
    width: 100%;
    height: auto;
  }
}
</style>