MICR (E13B) Scanner

Magnetic Ink Character Recognition OCR for the E13B font. This module assumes a cropped image of a check will be provided. The higher the resolution & clarity, the better the results.

A brief explanation

The MICR character set includes 10 digits and 4 control characters. The four control characters are:

• transit (⑆) : bank branch delimiter
• amount (⑇): transaction amount delimiter
• on-us (⑈): customer account number delimiter
• dash (⑉): number delimiter

These characters are printed along the bottom of bank checks.

Usage

The following assumes OpenCV.js is loaded and running in your environment and "mat" is a cv.Mat instance.

// Create an MICRSCanner instance and provide the OpenCV object.
const scanner = new MICRScanner(cv);

// Scan an OpenCV Mat instance for MICR characters.
// Returns an array of strings.
const data = scanner.scanImage(mat);

// Example contents of data
// ["T011300142T","12345678U","0101"]

Example

Included in this repository is an example implemented with NodeJS which can be run within the /example directory via:

node index.js

By default a sample check image is pre-loaded and scanned. You may upload your own images to test. Be sure that the image you upload is of a check image only.

Thanks

• OpenCV for creating an amazing toolkit.
• PyImageSearch for a well documented and helpful tutorial to get things moving in the right direction.