LoadModel
uses fetch
under the hood. And fetch cannot access the local files directly. It is meant to be used to get files served by a server. More on this here.
To load a local file with the browser, there is two approaches, asking the user to upload the file with
<input type="file"/>
Or serving the file by a server.
In these two scenarios, tf.js
provides way to load the model.
- Load the model by asking the user to upload the file
html
<input type="file" id="upload-json"/>
<input type="file" id="upload-weights"/>
js
const uploadJSONInput = document.getElementById('upload-json');
const uploadWeightsInput = document.getElementById('upload-weights');
const model = await tfl.loadModel(tf.io.browserFiles(
[uploadJSONInput.files[0], uploadWeightsInput.files[0]]));
- Serving the local files using a server
To do so, one can use the following npm module http-server to serve the directory containing both the weight and the model. It can be installed with the following command:
npm install http-server -g
Inside the directory, one can run the following command to launch the server:
http-server -c1 --cors .
Now the model can be loaded:
// load model in js script
(async () => {
...
const model = await tf.loadFrozenModel('http://localhost:8080/model.pb', 'http://localhost:8080/weights.json')
})()