Overview
Understand the OMR scanning process
Overview
OMR scanning allows grading exams in seconds using the camera.
What is OMR
OMR (Optical Mark Recognition) is technology that detects marks on paper. ProfeVision uses it to:
- Detect the student's QR code
- Read marked bubbles
- Calculate the grade
The process
Requirements
| Element | Requirement |
|---|---|
| Answer sheet | Correctly printed |
| QR | Visible and undamaged |
| Bubbles | Marked with dark pencil |
| Lighting | Good light, no shadows |
Time per sheet
- Capture: ~2 seconds
- Processing: ~3 seconds
- Total: ~5 seconds per student
With ProfeVision you can grade a class of 30 students in less than 3 minutes.