// Optical Character Recognition demo composite accessor.
//
// Copyright (c) 2015-2016 The Regents of the University of California.
// All rights reserved.
//
// Permission is hereby granted, without written agreement and without
// license or royalty fees, to use, copy, modify, and distribute this
// software and its documentation for any purpose, provided that the above
// copyright notice and the following two paragraphs appear in all copies
// of this software.
//
// IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
// FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
// ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
// THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE.
//
// THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
// PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
// CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
// ENHANCEMENTS, OR MODIFICATIONS.
//
/** Optical Character Recognition (OCR) demo using Camera and
* CharacterRecognition accessors.
*
* This accessor captures a snapshot from a webcam using the Camera accessor
* and feeds this image to the CharacterRecognition accessor, which attempts
* to identify text in the image. The text is sent to the output.
*
* Try it out in the browser:
* https://www.icyphy.org/accessors/hosts/browser/demo/textfromcamera/textfromcamera.html
*
* @accessor image/demo/TextFromCamera
* @input trigger Trigger the Camera accessor to take a snapshot.
* @output text Text detected in the snapshot.
* @author Elizabeth Osyk
* @version $$Id$$
*/
// Stop extra messages from jslint. Note that there should be no
// space between the / and the * and global.
/*globals console, error, exports, require */
/*jshint globalstrict: true*/
"use strict";
exports.setup = function () {
this.input('trigger');
this.output('text', {
'type': 'string'
});
var camera = this.instantiate('Camera', 'cameras/Camera'),
ocr = this.instantiate('CharacterRecognition',
'image/CharacterRecognition');
this.connect('trigger', camera, 'trigger');
this.connect(camera, 'image', ocr, 'input');
this.connect(ocr, 'text', 'text');
};