Understanding Picture Formats for OCR Conversion
A picture is a general term for any visual image stored as a digital file. Pictures encompass photographs from cameras, screenshots from screens, scanned documents, downloaded web images, and digitally created artwork. Each picture format encodes pixel data differently, affecting file size and OCR accuracy.
Convert JPG to Word accepts pictures in all standard web and camera formats. The converter identifies the format from file headers, decodes the pixel data, and normalizes it for OCR processing.
Picture Quality Factors That Affect Text Extraction
There are 4 picture quality factors that directly affect OCR text extraction:
- Resolution: Higher pixel counts provide more detail per character. Minimum 150 DPI equivalent for readable text.
- Contrast: Dark text on light backgrounds produces the best results. Low contrast reduces recognition by 10-20%.
- Focus: Sharp focus on the text area is required. Blurred text drops accuracy by 15-30%.
- Noise: Grain, compression artifacts, and scanner dust interfere with character boundaries. Clean images produce 5-10% better accuracy.