nodecr's Introduction

Tesseract for Node.js

A simple wrapper for the Tesseract OCR package for Node.js

Test

	./bin/test

Demo

nodecr has been used in a NodeCopter demo, translating text into real-time flight commands. Here's a little video created by stitching together the photos taken by the onboard camera (each image was passed through nodecr): http://youtu.be/aGo6oPC92QE.

Source code available here: https://github.com/photomoose/OCRDrone

Installation

npm install nodecr

Versions

0.0.5: Add possibility to override logger (quiet nodecr, see example below)
0.0.4: Changed name to nodecr and published node module (formerly node-tesseract)
0.0.3: Added support for custom preprocessors, OTB Preprocessor using ImageMagick 'convert'
0.0.2: Refactored to support tesseract 3.01, added language parameter, config parameter, documentation
0.0.1: Initial version from Desmond Morris

Usage

var nodecr = require('nodecr');

// Recognise text of any language in any format
nodecr.process(__dirname + '/path/to/image.jpg',function(err, text) {
	if(err) {
		console.error(err);
	} else {
		console.log(text);
	}
});

// Recognise German text in a single uniform block of text
nodecr.process(__dirname + '/path/to/image.jpg',function(err, text) {
	if(err) {
		console.error(err);
	} else {
		console.log(text);
	}
}, 'deu', 6);

// Recognise text of any language in any format but preprocess the image
// with ImageMagick 'convert' (This requires ImageMagick to be installed)

// uncomment this to quiet nodecr
//nodecr.log = function() {};

// You can write and use your own preprocessors easily, just have a look at src/nodecr.coffee
nodecr.process(__dirname + '/path/to/image.jpg',function(err, text) {
	if(err) {
		console.error(err);
	} else {
		console.log(text);
	}
}, null, null, null, nodecr.preprocessors.convert);