The best scanning mode depends on a user’s preference.
Grayscale: Scanning in grayscale mode will yield the best recognition results. If you scan your images in grayscale, the application tunes the brightness automatically.
Black/White: Scanning in black and white mode enables the system to scan at a higher speed, but at the same time some character information is lost. This may have a negative effect on the recognition quality of documents of medium and low print quality.
Color: Scan in color mode to retain color documents. It scans and recognizes color documents with pictures, color text and background, and retains the color in electronic documents