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What is the best scanning resolution for OCR?

April 26, 2017best OCR resolution scanning

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What is the best scanning resolution for OCR?

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• Most OCR engines, including the ones used by PrimeOCR, are optimized for 300 dpi images. Scanning at true 300 dpi optical resolution is very important. Scanning at a lower resolution and then using scanner software to increase the dpi later on does nothing for OCR. In cases where the font size of characters on an image are very small ( point size of 4 or less), scanning images in at 400 dpi can improve character recognition. This again would require a scanner that supports true 400 dpi optical resolution.