Added REST version for OCR

Author: wiazur

nodejs/Vision/ComputerVision.js

@@ -0,0 +1,51 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+'use strict';
+
+let request = require('request')
+
+/**
+ * This sample uses the Computer Vision API to detect printed text in an image,
+ * then returns the text and its properties, such as language, text angle, orientation.
+ * Bounding boxes are calculated around portions of the text.
+ *
+ * Computer Vision API - v2 .1:
+ * https: //westus.dev.cognitive.microsoft.com/docs/services/5cd27ec07268f6c679a3e641/operations/56f91f2e778daf14a499f20d
+ *
+ */
+
+// Add your Azure Computer Vision subscription key and endpoint to your environment variables. 
+// Also note v5 and v7 require separate subscription keys. 
+let subscriptionKey = process.env['COMPUTER_VISION_SUBSCRIPTION_KEY']
+let endpoint = process.env['COMPUTER_VISION_ENDPOINT'] + '/vision/v2.1/ocr'
+
+// An image with printed text; or replace with your own.
+let url = 'https://raw.githubusercontent.com/Azure-Samples/cognitive-services-sample-data-files/master/ComputerVision/Images/printed_text.jpg'
+
+// Request parameters.
+const params = {
+    'language': 'unk', // auto-detects language
+    'detectOrientation': 'true',
+};
+
+// Options
+let request_params = {
+    method: 'POST',
+    uri: endpoint,
+    qs: params,
+    body: '{"url": ' + '"' + url + '"}',
+    headers: {
+        'Content-Type': 'application/json',
+        'Ocp-Apim-Subscription-Key': subscriptionKey
+    }
+}
+
+// Make request
+request(request_params, function (error, response, body) {
+    console.error('error:', error)
+    console.log('statusCode:', response && response.statusCode)
+    console.log('original image: ' + url.substring(url.lastIndexOf('/') + 1))
+    console.log()
+    console.log(JSON.stringify(JSON.parse(body), null, 2))
+})