OMR is a scanning process that detects marks made on specialized paper, typically in the form of filled-in circles or rectangles, to interpret human-marked data.
The device uses a light source that shines onto the OMR sheet and sensors that detect the reflection. Since filled circles reflect less light than blank areas, the machine identifies the marked positions.
OMR is primarily used in high-stakes competitive examinations and surveys because it allows for the rapid, accurate, and automated grading of thousands of answer sheets simultaneously.
Students must use specific markers, such as HB pencils or black ballpoint pens, as the carbon content is essential for the light-sensing technology to register the mark correctly.
OMR technology has significantly reduced human error in large-scale evaluation processes and is a standard tool in various recruitment and entrance examinations conducted by government bodies and commissions.
