微信小程序实现人脸识别

<template>
  <view>
    <camera :device-position="devicePosition" flash="off" @error="error" style="width: 100%; height: 300px;"></camera>
    <button type="primary" @click="takePhoto">拍照</button>
    <button type="primary" @click="toggleDevicePosition">翻转摄像头</button>
    <view>预览</view>
    <image mode="widthFix" :src="src"></image>
  </view>
</template>

<script>
export default {
            
     
  data () {
            
     
    return {
            
     
      src: "",
      cameraCtx: null,
      devicePosition: backs //前置或后置摄像头，值为front, back
    }
  },
  onLoad () {
            
     
    this.cameraCtx = uni.createCameraContext();

  },
  methods: {
            
     
    takePhoto () {
            
     
      this.cameraCtx.takePhoto({
            
     
        quality: high,
        success: (res) => {
            
     
          this.src = res.tempImagePath
        }
      });
    },
    toggleDevicePosition () {
            
     
      this.devicePosition = this.devicePosition == back ? front : back
    },
    error (e) {
            
     
      console.log(e.detail);
    }
  }
}
</script>

```

最后将拍摄到的图片通过人脸识别接口请求对比一下就行了