C# 使用Angular 7的Azure人脸Api进行人脸识别

我需要用Angular和Azure face API开发一个人脸识别系统。但是，Azure Face API的文档是C#。有人能帮我把它改写成打字稿吗

是Azure face API中人脸识别的准则

https://westus.api.cognitive.microsoft.com/face/v1.0/detect[?returnFaceId][&returnFaceLandmarks][&returnFaceAttributes]
&subscription-key=<Subscription key>

faceServiceClient = new FaceServiceClient("<Subscription Key>");

// Create an empty PersonGroup
string personGroupId = "myfriends";
await faceServiceClient.CreatePersonGroupAsync(personGroupId, "My Friends");

// Define Anna
CreatePersonResult friend1 = await faceServiceClient.CreatePersonAsync(
    // Id of the PersonGroup that the person belonged to
    personGroupId,    
    // Name of the person
    "Anna"            
);

// Directory contains image files of Anna
const string friend1ImageDir = @"D:\Pictures\MyFriends\Anna\";

foreach (string imagePath in Directory.GetFiles(friend1ImageDir, "*.jpg"))
{
    using (Stream s = File.OpenRead(imagePath))
    {
        // Detect faces in the image and add to Anna
        await faceServiceClient.AddPersonFaceAsync(
            personGroupId, friend1.PersonId, s);
    }
}

https://westus.api.cognitive.microsoft.com/face/v1.0/detect[？returnFaceId][&returnFaceLandmarks][&returnFaceAttributes]
&订阅密钥=
faceServiceClient=新的faceServiceClient（“”）；
//创建一个空的PersonGroup
字符串personGroupId=“myfriends”；
等待faceServiceClient.CreatePersonGroupAsync（personGroupId，“我的朋友”）；
//定义安娜
CreatePersonResult friend1=等待faceServiceClient.CreatePersonalSync(
//此人所属的个人组的Id
personGroupId，
//姓名
“安娜”
);
//目录包含安娜的图像文件
常量字符串friend1ImageDir=@“D:\Pictures\MyFriends\Anna\”；
foreach（Directory.GetFiles（friend1ImageDir，*.jpg）中的字符串imagePath）
{
使用（streams=File.OpenRead（imagePath））
{
//检测图像中的人脸并添加到
等待faceServiceClient.AddPersonFaceAsync(
personGroupId，friend1.PersonId，s）；
}
}

以下是用于人脸识别的typescript中的示例代码

import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http';
import { Injectable } from '@angular/core';
import { environment } from '../../environments/environment';

@Injectable()
export class FaceRecognitionService {
  constructor(private httpClient: HttpClient) { }

  scanImage(subscriptionKey: string, base64Image: string) {
    const headers = this.getHeaders(subscriptionKey);
    const params = this.getParams();
    const blob = this.makeblob(base64Image);

    return this.httpClient.post<FaceRecognitionResponse>(
      environment.endpoint,
      blob,
      {
        params,
        headers
      }
    );
  }

  private makeblob(dataURL) {
    const BASE64_MARKER = ';base64,';
    const parts = dataURL.split(BASE64_MARKER);
    const contentType = parts[0].split(':')[1];
    const raw = window.atob(parts[1]);
    const rawLength = raw.length;
    const uInt8Array = new Uint8Array(rawLength);

    for (let i = 0; i < rawLength; ++i) {
      uInt8Array[i] = raw.charCodeAt(i);
    }

    return new Blob([uInt8Array], { type: contentType });
  }

  private getHeaders(subscriptionKey: string) {
    let headers = new HttpHeaders();
    headers = headers.set('Content-Type', 'application/octet-stream');
    headers = headers.set('Ocp-Apim-Subscription-Key', subscriptionKey);

    return headers;
  }

  private getParams() {
    const httpParams = new HttpParams()
      .set('returnFaceId', 'true')
      .set('returnFaceLandmarks', 'false')
      .set(
        'returnFaceAttributes',
        'age,gender,headPose,smile,facialHair,glasses,emotion,hair,makeup,occlusion,accessories,blur,exposure,noise'
      );

    return httpParams;
  }
}

从'@angular/common/http'导入{HttpClient，HttpHeaders，HttpParams}；
从“@angular/core”导入{Injectable}；
从“../../environments/environment”导入{environment}；
@可注射（）
导出类FaceRecognitionService{
构造函数（私有httpClient:httpClient）{}
scanImage（subscriptionKey:string，Base64图像：string）{
const headers=this.getHeaders（subscriptionKey）；
const params=this.getParams（）；
const blob=this.makeblob（base64Image）；
返回this.httpClient.post(
environment.endpoint，
水滴，
{
params，
标题
}
);
}
私有makeblob（dataURL）{
常量BASE64_标记='；BASE64'；
const parts=dataURL.split（BASE64_标记）；
常量contentType=parts[0]。拆分（“：”）[1]；
const raw=window.atob（第[1]部分）；
const rawLength=原始长度；
const uInt8Array=新uInt8Array（rawLength）；
for（设i=0；i

有关完整的代码参考，请参阅：

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希望这有帮助。

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