This article will enable you to build an optical mark recognition software that will be able to scan bubble answer sheet in Java programmatically. Aspose.OMR for Java offers a wide range of classes and methods to automate the bubble answer sheet reading. However, this OMR sheet reader library can recognize human-marked options efficiently and export data to CSV or any other file format. However, let’s build an OMR sheet scanner in a Java application that will scan OMR sheets saved in JPG format. So, let’s start the blog post right away.
We will cover the following points in this blog post:
- OMR Sheet JPG - API Installation
- Scan Bubble Answer Sheet in Java Programmatically
- Online OMR Sheet Reader - Live Demo
OMR Sheet JPG - API Installation
The installation procedure of this enterprise-level Java library is quite short and simple. In fact, you can go through this installation guide in case you want to go through it thoroughly. Therefore, you can download this JAR file or use the following Maven configurations:
<repositories>
<repository>
<id>AsposeJavaAPI</id>
<name>Aspose Java API</name>
<url>https://releases.aspose.com/java/repo/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>com.aspose</groupId>
<artifactId>aspose-omr</artifactId>
<version>23.12</version>
</dependency>
</dependencies>
Scan Bubble Answer Sheet in Java Programmatically
In addition to reading the bubble answer sheet, Aspose.OMR for Java offers methods to create OMR templates and answer sheets in multiple file formats programmatically. So, please visit this guide if you want to learn how to generate OMR sheets in Java.
Now, we have the source OMR answer sheet(i.e. SimpleSurvey.jpg) and OMR template file(i.e. SimpleSurvey.omr) which will be used to perform OMR operation.
You can follow the following steps to scan bubble answer sheet in Java:
- Instantiate an instance of the OmrEngine class that handles the creation of the template, image processing classes and GUI components.
- Load the .omr file by calling the getTemplateProcessor method and assign it to an object of the TemplateProcessor class.
- Recognize the image and receive the result by invoking the recognizeImage method and assign the results to the instance of the RecognitionResult class.
- Call the getCsv method to export data to csv string.
- Save the CSV file to the output folder.
The following code snippet demonstrates how to develop an optical mark recognition software to read bubble answer sheet and export data to CSV:
You can see the output in the image below:
Online OMR Sheet Reader - Live Demo
Now, we can leverage an online OMR sheet reader powered by Aspose.OMR for Java. This online tool is web-based and you can scan OMR sheet online by performing simple steps. Moreover, there is a user-friendly user interface with logical navigation. Above all, it is free and requires no account creation or subscription.
Optical Mark Recognition Software - Get a Free License
You can avail a free temporary license to try Aspose.OMR for Java without evaluation limitations.
Conclusion
This brings us to the end of this blog post in which we went through how to scan bubble answer sheet in Java. In addition, we also have explored the steps to build an OMR sheet scanner programmatically and then how to export data to CSV. This guide will help you if you are looking to develop an OMR sheet reader for your business application. Further, you may visit the documentation and API references to learn more. Moreover, you can check the examples at the GitHub repo to start development.
Also, we recommend you visit the Getting Started Guide. Finally, aspose.com is consistently writing new blog posts. So, please stay in touch for latest updates.
Help is Available
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Frequently Asked Questions – FAQs
How to read OMR sheets in Java?
You can opt for Aspose.OMR for Java to build an OMR sheet reader in Java. Please visit this link to learn about details.
What is the app for scanning answer sheets?
Use this online OMR sheet reader to scan OMR sheet online. It is backed by Aspose.OMR for Java and is free to use.