Java OMR Library for Free Data Extraction from Scanned Images & Docs

Open Source Java Optical Mark Recognition Solution for Handling OMR Images & Documents. It Automates Extraction of Data from Scanned Forms & Documents inside Java Apps.

Data can be extracted from scanned papers with marked fields—usually in the form of checkboxes or bubbles—using a process called optical mark recognition. Optical Mark Recognition (OMR) is an important aspect of data processing and document analysis. OMR technology is important in a variety of disciplines, including education, surveys, and assessments, because it enables the automated extraction of data from scanned forms. The Java OMR Library is a standout open-source gem among the various tools available, offering a strong and adaptable OMR solution for Java applications.

In Java-based projects, optical mark recognition is made easier with the help of the feature-rich and user-friendly OMR library. This library, created by a committed community, enables developers to easily include OMR functionality into their own applications. The library supports the recognition of various mark types, including checkboxes, bubbles, grids and many more. This flexibility makes it suitable for a wide range of applications, from simple surveys to complex academic assessments.

Because the Library is an open source project, programmers are free to view, alter, and add to its source code. The project's vibrant community guarantees ongoing support and development. Numerous industries use OMR extensively, including as education for multiple-choice exam grading, surveys for response collection and analysis, and innumerable other situations where structured data must be extracted from printed forms. The Java OMR Library is a dependable and effective solution for any project requiring automatic data extraction from scanned documents, including survey applications and educational software. Explore the world of OMR with Java and learn about the revolutionary possibilities of this state-of-the-art technology.

At A Glance

An overview of Java-OMR features.

Features Overview

Data Extraction from Images
Use Paper-Based Forms
Recognize Checkboxes
Recognize Marked Areas
Recognize Marks Image
Convert Scanned Images
Recognize Font Text
Create OMR apps
Save Data to browser
Recognize Filled-in bubbles
Multi Languages Support

Java-OMR

Java-OMR supports popular image file formats listed below.

Reader

PNG, JPEG, BMP, TIFF, TGA, DICOM

Writer

PNG, JPEG, BMP, TIFF

Java-OMR

Platform Independence

OMR can work with any Java programming language

Java Runtime.

OMR

Getting Started with Java-OMR

The recommend way to install Java-OMR is using Maven. To install the Java-OMR Java OMR Library via Maven, you can add the library as a dependency in your project's pom.xml file.

 //Define Aspose.PDF for Java API Dependency

<dependencies>
	<dependency>
	<groupId>com.richardquast</groupId>
	<artifactId>OMR</artifactId>
	<version>1.3.0</version>
	</dependency>
</dependencies>

Install Java-OMR via GitHub

 Clone git https://github.com/tsauvine/omr.git

OMR Recognition & Data Extraction via Java API

The open source OMR library has provided complete support for recognizing and extracting data from scanned images and documents. It simplifies the process of recognizing and extracting data from scanned documents in Java applications. It precisely captures and interprets data from marked areas on paper forms, ensuring minimal errors in the extraction process. The library allows tailoring the OMR processing to specific requirements through configurable settings. Software developers have the flexibility to adjust parameters such as sensitivity and recognition thresholds, allowing for fine-tuning based on the characteristics of the input documents. The following example shows how to Load the scanned document and extract data from it via Java API.

How to Load & Extract Data from Scanned Document & Forms uinsg Java API?

OMRConfiguration omrConfig = new OMRConfiguration();
omrConfig.setSensitivity(0.8); // Adjust sensitivity based on your requirements
// Set other configuration parameters as needed
OMRSheet omrSheet = new OMRSheet("path/to/scanned-document.png");
// Perform Recognition
OMRResult omrResult = omrSheet.process(omrConfig);
Map extractedData = omrResult.getData();
omrConfig.setSensitivity(0.85); // Adjusted sensitivity based on evaluation
// Refine other configuration parameters as needed
try {
    // OMR processing code
} catch (OMRException e) {
    // Handle OMR-related exceptions
    e.printStackTrace();
}

Various Mark Types Recognition via Java

The open source OMR library supports the recognition of various mark types, including checkboxes, bubbles, grids, and many mores. This flexibility makes it suitable for a wide range of applications, from simple surveys to complex academic assessments. The underlying algorithms of the Library are designed to deliver accurate and reliable results. This ensures that the OMR process is robust, even in scenarios with imperfect scans or challenging input conditions.

Extensive Documentation & Community Support

The open source OMR library has provided a comprehensive and well-maintained documentation repository. This resource serves as a guide for developers, offering insights into implementation, best practices, and troubleshooting. Being an open source project, the Java OMR Library benefits from a vibrant and supportive community. Developers can actively engage with others, seek assistance, and contribute to the ongoing enhancement of the library.