Because OCR processing is an integral part of the Automated Redaction process, it is considered a best practice to ensure that all documents that undergo Automated Redaction meet the recommended criteria for OCR processing. This will ensure that the OCR engine returns the most accurate results possible:
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It is considered a best practice to perform Automated Redaction on bi-tonal (black and white) documents, not color or grayscale documents. The OCR process is significantly more accurate when performed on bi-tonal images as opposed to color or grayscale images.
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It is considered a best practice to perform Automated Redaction on documents with a resolution of at least 300 dpi. If poor or inaccurate OCR processing results are reported at 300 dpi, the documents should be discarded and be re-scanned/re-imported at an incrementally higher resolution until acceptable OCR results are achieved.