One-Shot Grading: Design and Development of an Automatic Answer Sheet Checker

Technological advancements have transformed the landscape of examination grading, necessitating efficient and reliable solutions. This paper introduces “One-Shot Grading, “ an Automatic Answer Checker that utilizes machine vision and image processing to evaluate multiple-choice and true-false questions. The system offers adaptability to diverse exam formats, allowing for modifications to the answer sheet's choices, parts, and size. Extensive validation tests demonstrate consistent performance with 100.0% accuracy in recognizing student IDs and grading sheets marked with a 2B pencil. The system effectively identifies and rejects erroneous sheets, maintaining a robust grading process. Comparison with the ZIP GRADE app confirms the reliability and accuracy of the Automatic Answer Checker. The system displays flexibility and accuracy in grading papers of varying weights, showcasing its adaptability to real-world conditions. Future research should explore extending the system to different question formats and investigating environmental factors' impact on performance.