OCR Text Extraction Guide
OCR (Optical Character Recognition) is a technology that converts text in scanned documents or photographs into digital, editable text. When used correctly, it can achieve 95-99% accuracy rates.
How Does OCR Work?
OCR technology follows these steps:
- Preprocessing: Image correction, noise removal, contrast adjustment
- Text region detection: Identifying text areas in the image
- Character recognition: Recognizing each character individually
- Post-processing: Spell checking and contextual correction
Tips for Best Results
- Use high resolution: Scan at a minimum of 300 DPI
- Place straight: Position the document flat and straight on the scanner
- Good lighting: Avoid shadows and glare when photographing
- Select correct language: Choose the correct document language in the OCR tool
- Clean documents: Stain-free, unwrinkled documents give better results
OCR Use Cases
- Archive digitization projects
- Automatic reading of invoice and receipt data
- Book and magazine digitization
- ID document scanning
- Converting handwritten notes to digital
Conclusion
OCR technology is the most powerful tool for transferring physical documents to the digital world. With PdfMetric's OCR tool, you can quickly and accurately extract text from your scanned PDFs.