Get 415 error while calling computer vision OCR

Question

I am using Azure computer vision API. I can post an image url to Azure and get its result successfully by nodejs.

However when I want to post a local image instead of an image url , I always get 415 error. So did I miss something?

Thanks in advance .

Answer 1

If you want to post a local image to Azure computer version OCR using nodejs. just try the code below :

const fetch = require("node-fetch")
const fs  = require('fs');


let subscriptionKey = '<your subscription key>';
let endpoint = '<your computer vision endpoint>';
let filePath = "<path of your local image>";
const base64 =  fs.readFileSync(filePath, 'base64')
const data = Buffer.from(base64, 'base64')

var uriBase = endpoint + "vision/v2.1/ocr";

fetch(uriBase ,
{
method: 'POST',
headers: 
    {
    'Content-Type': 'application/octet-stream',
    'Ocp-Apim-Subscription-Key': subscriptionKey,
    },
body: data,
}).then((response) => response.json()).then((data) =>
{
console.log(JSON.stringify(data, null, 2));
}).catch((error) =>
{
console.log(error);
});

As far as I know if you use multipart/form-data, will cause 415 error .

Result :