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
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | 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。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | //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
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | 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:--ns868