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Detect and Extract MICR - Java

This tutorial shows how to create a Java application that uses the LEADTOOLS SDK to perform MICR detection and recognition.

Overview
Summary	This tutorial covers how to use LEADTOOLS MICR SDK technology in a Java application.
Completion Time	30 minutes
Eclipse Project	Download tutorial project (2 KB)
Platform	Java Application
IDE	Eclipse
Development License	Download LEADTOOLS
Try it in another language	C#: .NET 6+ (Console), .NET 6+ (WinForms) Java: Java, Android Python: Python

Required Knowledge

Get familiar with the basic steps of creating a project by reviewing the Add References and Set a License tutorial and Load and Save Images tutorial, before working on the Detect and Extract MICR - Java tutorial.

Create the Project and Add the LEADTOOLS References

Start with a copy of the project created in the Load and Save Images tutorial. If that project is unavailable, follow the steps in that tutorial to create it.

The references needed depend upon the purpose of the project. References can be added by local .jar files located at <INSTALL_DIR>\LEADTOOLS23\Bin\Java.

For this project, the following references are needed:

leadtools.jar
leadtools.codecs.jar
leadtools.document.writer.jar
leadtools.forms.commands.jar
leadtools.imageprocessing.core.jar
leadtools.ocr.jar

For a complete list of which JAR files are required for your application, refer to Files to be Included with your Java Application

Set the License File

The License unlocks the features needed for the project. It must be set before any toolkit function is called. For details, including tutorials for different platforms, refer to Setting a Runtime License.

There are two types of runtime licenses:

Evaluation license, obtained at the time the evaluation toolkit is downloaded. It allows the toolkit to be evaluated.
Deployment license. If a Deployment license file and developer key are needed, refer to Obtaining a License.

Note: Adding LEADTOOLS local references and setting a license are covered in more detail in the Add References and Set a License tutorial.

Add the MICR Detection and Bank Check Reader Code

With the project created, the references added, the license set, and the load image code added, coding can begin. The code pertaining to saving the image is not necessary for this tutorial and can be commented out.

Open the Main.java class in the Project Explorer. Add the following statements to the import block at the top.

Java

import java.io.IOException; 
import java.nio.file.*; 
 
import leadtools.*; 
import leadtools.codecs.*; 
import leadtools.forms.commands.*; 
import leadtools.imageprocessing.core.*; 
import leadtools.ocr.*;

Inside the run() method add the following to set the library path to where the CDLL files are located, as well as load the LEADTOOLS library that was previously imported. Also, set the input path, load the image, and pass the image to RunMICRDetectionRecognition().

Java

public static void main(String[] args) throws IOException  
{ 
    new _Main().run(args); 
} 
private void run(String[] args) { 
    try { 
    	Platform.setLibPath("C:\\LEADTOOLS23\\Bin\\CDLL\\x64"); 
        Platform.loadLibrary(LTLibrary.LEADTOOLS); 
        Platform.loadLibrary(LTLibrary.CODECS); 
        Platform.loadLibrary(LTLibrary.OCR); 
 
    	SetLicense(); 
    		 
    	RasterCodecs codecs = new RasterCodecs(); 
    	// e13b check image file 
    	String inputFile = "C:\\LEADTOOLS23\\Resources\\Images\\bankcheck.jpg"; 
    	// CMC7 check image file, uncomment for implementation 
    	//String inputFile = "C:\\LEADTOOLS23\\Resources\\Images\\cmc7.jpg"; 
    	RasterImage image = codecs.load(inputFile); 
        RunMICRDetectionRecognition(image); 
    }  
    catch(Exception ex) { 
    	System.err.println(ex.getMessage()); 
    	ex.printStackTrace(); 
    } 
}

Add a new method to the _Main class called RunMICRDetectionRecognition(RasterImage image). Add the following code inside the new method to detect and extract the MICR text from the loaded image. This tutorial uses E13b check sample image and CMC7 check sample image images.

Java

void RunMICRDetectionRecognition(RasterImage image) throws IOException  
{ 
    RasterCodecs codecs = new RasterCodecs(); 
    BankCheckReader micrReader = new BankCheckReader(); 
    OcrEngine ocrEngine = OcrEngineManager.createEngine(OcrEngineType.LEAD); 
    ocrEngine.startup(null, null, null, "C:\\LEADTOOLS23\\Bin\\Common\\OcrLEADRuntime"); 
    micrReader.setOcrEngine(ocrEngine); 
 
    // MICR Code Detection searches for E13b MICR font type 
    MICRCodeDetectionCommand e13bCmd = new MICRCodeDetectionCommand(); 
    e13bCmd.setSearchingZone(new LeadRect(0, 0, image.getWidth(), image.getHeight())); 
    e13bCmd.run(image); 
 
    // Run CMC7 Detection 
    CMC7CodeDetectionCommand cmc7Cmd = new CMC7CodeDetectionCommand(); 
    cmc7Cmd.run(image); 
 
    // If E13b MICR code found 
    if (e13bCmd.getMICRZone() != LeadRect.getEmpty()) { 
        micrReader.setMicrFontType(BankCheckMicrFontType.E13B); 
        micrReader.processImage(image); 
    } 
    // If CMC7 MICR code found 
    else if (cmc7Cmd.getCMC7Zone() != LeadRect.getEmpty()) { 
        micrReader.setMicrFontType(BankCheckMicrFontType.CMC7); 
        micrReader.processImage(image); 
    } else 
        System.out.println("No MICR text detected!"); 
 
    StringBuilder sb = new StringBuilder(); 
    for (var value : micrReader.getResults().entrySet()) { 
        if (value.getKey() != "Signature") { 
            sb.append("\n"); 
            sb.append("Field Name: " + value.getKey() + "\n"); 
            sb.append("Field Value: " + value.getValue().getText() + "\n"); 
        } 
    } 
 
    System.out.println(sb.toString()); 
    ocrEngine.shutdown(); 
    codecs.dispose(); 
}

Run the Project

Run the project by pressing Ctrl + F11, or by selecting Run -> Run.

If the steps were followed correctly, the application runs and the console displays the check image's MICR information.

Wrap-up

This tutorial showed how to use the MICRCodeDetectionCommand and BankCheckReader classes.

Detect and Extract MICR - Java

Required Knowledge

Create the Project and Add the LEADTOOLS References

Set the License File

Add the MICR Detection and Bank Check Reader Code

Run the Project

Wrap-up

See Also