AWS compareFaces() Rekognition Javascript SDK Error: Unable to get object metadata from S3. Check object key, region and/or access permissions

Question

我正在尝试使用 aws Rekognition API 中的 compareFaces() 函数，方法是引用与 Rekognition 位于同一区域的同一 S3 存储桶 "reconfaces" 中的两个文件（我设置了 S3 bucket 到 us-east-1，等等 Rekognition）。为简单起见，我将存储桶设置为 public，并且我还使用了对 Rekognition 和 S3 具有完全权限的用户（在这种情况下这不是必需的，只是为了澄清一下）：

aws-rekognition-config.js

const dotenv = require('dotenv');
dotenv.config();
const AWS = require('aws-sdk');

const rekognition = {
    "accessKeyId": process.env.AMAZON_DEV_ACCESS_KEY_ID,
    "secretAccessKey": process.env.AMAZON_DEV_SECRET_ACCESS_KEY,
    "region": "us-east-1"
  };

const Recognition = new AWS.Rekognition(rekognition);

module.exports = Recognition;

和 index.js 我做了一个简单的测试来比较我存储桶中的两个图像：

let express = require('express');
let router = express.Router();


var AWS = require('aws-sdk');

var rekognition = require('../config/aws-rekognition-config');


module.exports = () => {

    router.get('/compare/:uid', async(req,res,next) => {


 var params = {
  SimilarityThreshold: 90, 
  SourceImage: {
   S3Object: {
    Bucket: "reconfaces", 
    Name: "1541079978865.jpg"
   }
  }, 
  TargetImage: {
   S3Object: {
    Bucket: "reconfaces", 
    Name: "1541079982272.png"   }
  }
 };

  let faceMatches;

//tried promised version here as well but without any luck
  rekognition.compareFaces(params, function(err, data) {
    if (err) console.log(err, err.stack); // an error occurred
    else     console.log(data);           // successful response
  });
/* 
   try{
      faceMatches = await rekognition.compareFaces(params);
      let a = 1;
   }catch(err){
      console.log("Error comparing faces",err);
      return;
   } */


    });



  /* GET home page. */
  router.use('/', (req, res) => {
        //list all routes
      res.send({"Default":'Backend-'});
  });

  return router;
}

如您所见，文件存在于存储桶中，并且与 rekognition 配置中指定的区域位于同一区域：

而且我使用的用户凭据拥有的权限超出了执行此任务所需的权限：

我还必须提到我通过 api 上传文件以及使用 npm 包 multer-s3:

    var multer = require('multer');
    var multerS3 = require('multer-s3');

    var s3 =  new aws.S3({
    "accessKeyId": process.env.AMAZON_DEV_ACCESS_KEY_ID,
    "secretAccessKey": process.env.AMAZON_DEV_SECRET_ACCESS_KEY,
    "region": "us-east-1",
    "s3BucketEndpoint": false,
    "endpoint": "https://s3.amazonaws.com"
  });


    var upload = multer({
      storage: multerS3({
        s3,
        bucket: 'reconfaces',
        metadata: function (req, file, cb) {
          cb(null, {fieldName: file.fieldname});
        },
        key: function (req, file, cb) {
          cb(null, Date.now() + path.extname(file.originalname));
        }
      })
    });

然后作为中间件应用：

router.post('/upload', upload.array('image',10), async(req,res,next)=>{

  //upload picture to s3 

    console.log("Files uploaded successfully");
    res.json({data:"UPLOAD_SUCCESS"});
});

我不知道元数据是否被 multer-s3 弄乱了。但是我也尝试从浏览器中的 aws 控制台上传这两个文件，我制作了两个文件和存储桶 public 并且我得到了同样的错误，所以我怀疑它与 multer-s3 包有关。这些文件没有损坏或任何东西，因为我可以毫无问题地下载和查看它们...

我也尝试使用 cli，但我得到了同样的错误：

aws rekognition compare-faces  --source-image '{"S3Object":{"Bucket":"reconfaces","Name":"11112-face1.jpg"}}' --region us-east-1 --target-image '{"S3Object":{"Bucket":"reconfaces","Name":"11112-face2.jpg"}}'

这个视频中的人也不能像我想要的那样做：

https://www.youtube.com/watch?v=GtknPjdlOfg

而且这个人可以使用我拥有的相同权限

https://www.youtube.com/watch?v=FhFs0zwCvg4

如果我抛出这个其他操作它会起作用：

aws rekognition detect-labels --image '{"S3Object":{"Bucket":"reconfaces","Name":"11112-face1.jpg"}}'

它returns：

{
    "Labels": [
        {
            "Name": "Human",
            "Confidence": 99.17317962646484
        },
        {
            "Name": "People",
            "Confidence": 99.17317962646484
        },
        {
            "Name": "Person",
            "Confidence": 99.17317962646484
        },
        {
            "Name": "Face",
            "Confidence": 63.1695671081543
        },
        {
            "Name": "Head",
            "Confidence": 57.89347839355469
        },
        {
            "Name": "Portrait",
            "Confidence": 55.02056884765625
        },
        {
            "Name": "Glasses",
            "Confidence": 51.320011138916016
        },
        {
            "Name": "Child",
            "Confidence": 50.735557556152344
        },
        {
            "Name": "Kid",
            "Confidence": 50.735557556152344
        }
    ],
    "OrientationCorrection": "ROTATE_0"
}

所以它一定是有 compare-faces 端点的东西。

可能是什么问题？我看到很多人对这个特定的 API 有疑问，但我在这里和 github 问题中找到的大部分答案都是关于两种资源在不同地区运行的，这不是我的情况。

非常感谢！

Answer 1

这个问题真的很傻。在存储桶中，我有 face1.jpg 和一个 face.png，我用 jpg 来调用它们，比如

var params = {
  SimilarityThreshold: 90, 
  SourceImage: {
  S3Object: {
    Bucket: "reconfaces", 
    Name: "face1.jpg"
  }
  }, 
  TargetImage: {
  S3Object: {
    Bucket: "reconfaces", 
    Name: "face2.jpg"   }
  }
};

用 face2.png 更正 face2.jpg 后，我得到了正确的回复：

  var params = {
      SimilarityThreshold: 90, 
      SourceImage: {
      S3Object: {
        Bucket: "reconfaces", 
        Name: "face1.jpg"
      }
      }, 
      TargetImage: {
      S3Object: {
        Bucket: "reconfaces", 
        Name: "face2.png"   }
      }
    };

回复：

{
    "SourceImageFace": {
        "BoundingBox": {
            "Width": 0.48317307233810425,
            "Height": 0.6442307829856873,
            "Left": 0.2584134638309479,
            "Top": 0.18910256028175354
        },
        "Confidence": 99.9949722290039
    },
    "FaceMatches": [
        {
            "Similarity": 98,
            "Face": {
                "BoundingBox": {
                    "Width": 0.2640642821788788,
                    "Height": 0.2769230902194977,
                    "Left": 0.16237494349479675,
                    "Top": 0.29230770468711853
                },
                "Confidence": 99.84500122070312,
                "Landmarks": [
                    {
                        "Type": "eyeLeft",
                        "X": 0.2420874983072281,
                        "Y": 0.3932344913482666
                    },
                    {
                        "Type": "eyeRight",
                        "X": 0.3406614661216736,
                        "Y": 0.3887109160423279
                    },
                    {
                        "Type": "nose",
                        "X": 0.3142981231212616,
                        "Y": 0.4448704421520233
                    },
                    {
                        "Type": "mouthLeft",
                        "X": 0.2604469358921051,
                        "Y": 0.5106690526008606
                    },
                    {
                        "Type": "mouthRight",
                        "X": 0.3448459208011627,
                        "Y": 0.5012921690940857
                    }
                ],
                "Pose": {
                    "Roll": -3.831692695617676,
                    "Yaw": 14.12887954711914,
                    "Pitch": 3.8166630268096924
                },
                "Quality": {
                    "Brightness": 82.77690887451172,
                    "Sharpness": 89.91268920898438
                }
            }
        }
    ],
    "UnmatchedFaces": [],
    "SourceImageOrientationCorrection": "ROTATE_0",
    "TargetImageOrientationCorrection": "ROTATE_0"
}

最后，请检查文件名是否与您要定位的存储桶中的文件名相匹配。我想我得睡会儿了 xD

AWS compareFaces() Rekognition Javascript SDK Error: Unable to get object metadata from S3. Check object key, region and/or access permissions

AWS compareFaces() Rekognition Javascript SDK Error: Unable to get object metadata from S3. Check object key, region and/or access permissions

node.js

amazon-web-services

amazon-s3

amazon-rekognition

multer-s3