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小程序实现人脸识别功能(百度ai)

1. 按照文档获取AppID、API Key、Secret Key,进行Access Token(用户身份验证和授权的凭证)的生成

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const getBaiduToken = function () {
 return new Promise((resolve, reject) => {
  //自行获取APIKey、SecretKey
  const apiKey = APIKey;
  const secKey = SecretKey;
  const tokenUrl = `https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials&client_id=${apiKey}&client_secret=${secKey}`;
  wx.request({
   url: tokenUrl,
   method: 'POST',
   dataType: "json",
   header: {
    'content-type': 'application/json; charset=UTF-8'
   },
   success: function (res) {
    resolve(res);
   },
   fail: function (res) {
    wx.hideLoading();
    wx.showToast({
     title: '网络错误,请重试!',
     icon: 'none',
     duration: 2000
    })
    reject(res);
   },
   complete: function (res) {
    resolve(res);
   }
  })
 })
}

2. 选择人脸识别-->人脸检测,人脸识别接口分为V2和V3两个版本,确认在百度云后台获得的是V2还是v3版本接口权限。

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//封装识别方法
const getImgIdentify = function(tokenUrl, data){
 return new Promise((resolve, reject) => {
  const detectUrl = `https://aip.baidubce.com/rest/2.0/face/v3/detect?access_token=${tokenUrl}`;
  wx.request({
   url: detectUrl,
   data: data,
   method: 'POST',
   dataType: "json",
   header: {
    'content-type': 'Content-Type:application/json; charset=UTF-8'
   },
   success: function (res) {
    resolve(res);
   },
   fail: function (res) {
    wx.hideLoading();
    wx.showToast({
     title: '网络错误,请重试!',
     icon: 'none',
     duration: 2000
    })
    reject(res);
   },
   complete: function (res) {
    resolve(res);
   }
  })
 })
}

3. 调用识别方法

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getBaiduToken().then((res) => {
 let token = res.data.access_token;
 let data = {
  "image": self.data.img,
  "image_type":"URL",
  "face_field":"ge,beauty,expression,face_shape,gender,glasses,landmark,race,quality,eye_status,emotion,face_type"
 }
 util.getImgIdentify(token, data).then((res)=>{
  //百度接口返回的结果
  let score = parseInt(res.data.result.face_list[0].beauty);
  self.setData({
   score: score,
  })
 })
})

4. 结果如下:

编辑:--龚凯