The primary issues leading to unsuccessful optical form recognition are summarized below:
- Markings overlapping reference lines: User markings extend onto key structural lines, disrupting their integrity and making detection more difficult.
- Poor print quality: Due to printer-related issues, key lines appear broken, faint, or inconsistent, preventing accurate form structure recognition.
- Insufficient lighting and focus issues: Inadequate lighting conditions result in blurred images, which significantly reduces the effectiveness of detection algorithms requiring clear visual input.