"Blob is not defined" fetching local images

Hi, i testing face-api.js and trying loading a local image for make face similarity and is throw me “Blob is not defined” in my nodeJS application, here the function where i try computing descriptors:

face.env.monkeyPatch({ fetch, Blob });

const threshold = 0.6;
var descriptors = { desc1: null, desc2: null };

function computarDescriptor(aDesc, aUri) {
  // ~statics/pics/001_tmp.jpg
  face.fetchImage(aUri).then(function(result) {
    console.log('fecthImage: ' + result);
    descriptors['desc' + aDesc] = face.computeFaceDescriptor(result);
  }).catch(err => {
    console.log(err);
  })
}

node-fetch and blob is installed and monkeyPatched and referenceErros is still there.

Thanks

[hanjeahwan]

Ahh, currently face.env.monkeyPatch doesn’t patch Blob, thanks for pointing this out. Maybe as for now you could simply try to expose Blob to the global scope? global.Blob = require('blob');

After i define as global i get

TypeError: Right-hand side of ‘instanceof’ is not an object

tfjs-image-recognition-base\src\dom\bufferToImage.ts:5:14

[EziamakaNV]

Hi @enecumene, @justadudewhohacks

I had a similar issue a few minutes ago. The only difference is that I was trying to fetch the image from the cloud (cloudinary).

I solved it by using the ‘loadImage’ function from the node ‘canvas’ package i.e

import { loadImage } from ‘canvas’;

const referenceImage = await loadImage(refImageUrl);

It might work for local images. Hope this helps