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Free Python OMR API for Automated Extraction of Data

Open Source Optical Mark Recognition Library that Supports Automated Recognition & Extraction of Data from Answer Sheet, scanned Images & Documents.

Optical Mark Recognition is a technology that enables the automated extraction of data from scanned documents, particularly those with predefined areas that are marked, such as checkboxes or circles. This technology finds applications in various fields, including education, surveys, and data collection. In the ever-evolving landscape of technology, Python continues to be at the forefront of programming languages, offering a vast array of libraries that cater to diverse needs. One such gem is the Python OMR (Optical Mark Recognition) Library, a powerful tool that simplifies the complex task of processing and interpreting scanned images containing marked areas.

The Python OMR Library opens up a world of possibilities for developers seeking to implement Optical Mark Recognition in their projects. In the education sector, the Python OMR Library can streamline the grading process for multiple-choice exams, quizzes, and assessments. Its accuracy and efficiency can save educators valuable time, allowing them to focus on more strategic aspects of teaching. Businesses and organizations conducting surveys or collecting data through forms can leverage the Python OMR Library to automate the extraction and analysis of information. Its flexibility, accuracy, and compatibility make it a compelling choice for software developers and organizations seeking to integrate OMR capabilities into their projects.

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Getting Started with OMR

The recommend way to install Python OMR library is using GitHub. Please use the following command for a smooth installation.

Install OMR Library via GitHub

 $ git clone https://github.com/rbaron/omr 

You can download the library directly from GitHub

Perform Mark Recognition via Python OMR Library

The open source OMR library makes it easy for Python developers to perform Mark recognition inside Python applications. Performing mark recognition using the Python OMR Library involves several steps such as loading an image containing the marked areas, specifying the regions in the image where marks are expected, adjusting the threshold for mark detection, performing the recognition process, retrieving the results, visualizing the marked regions and the recognition results and the end you can save the results to a file or export them in a format of your choice for further analysis. The following example demonstrates how software developers can achieve Mark Recognition inside their Python applications.

How to Perform Mark Recognition using Python OMR Library?

from omr import OMR

omr = OMR()
regions_of_interest = [
    {"top_left": (x1, y1), "bottom_right": (x2, y2)},
    # Add more regions if needed
omr.set_parameter("threshold", 128)
# Add more parameters if needed
result = omr.process()
// Retrieve the results
for region_result in result["results"]:
    region_name = region_result["name"]
    marks = region_result["marks"]
    print(f"Region: {region_name}, Marks: {marks}")
// visualize the marked regions and the recognition results.
// Save the results to a file

Flexibility & Customization inside Java Apps

One of the standout features of the Python OMR Library is its flexibility. Users can tailor the library to meet the specific requirements of their projects, making it a versatile tool for various applications. Whether you're dealing with standardized tests, surveys, or other data collection forms, the library can be adapted to suit your needs.

Accuracy and Integration with Python Projects

Accuracy is paramount in OMR, and the Python OMR Library delivers on this front. Leveraging advanced image processing techniques, the library ensures reliable recognition of marked areas, minimizing errors and providing trustworthy results. This makes it a valuable asset for tasks where precision is non-negotiable. The library supports various image formats, making it compatible with a wide range of input sources. Additionally, it can be seamlessly integrated into existing Python projects, simplifying the incorporation of OMR capabilities into diverse applications.