Document Scanning and Quality Control
Quality Control at the Time of Scanning
This is the first stage of document scanning browse this site quality control. The operator views the scans as pages pass the scanner and stops the scanner when rescans are required. The scanning operator adjusts the settings, resolution, sharpening, brightness and contrast to get the best quality image possible in batch scanning mode. Certain types of paper may cause particular issues. Colored paper may appear black and the operator may need to adjust the settings or change to color drop-out mode. High gloss paper may reflect too much light and require adjustments to the brightness and contrast. Another issue is old fashioned onion skin typing paper. The keystrokes may appear blurred on the image or the carbon copy may appear black. The operator can change to grayscale mode to get the highest quality scan. In addition, the production manager checks images over the network to make sure that the scanning is done correctly.
It is usually more cost effective to catch and fix quality issues at the time of scanning. However, in cases where there are a large percentage of poor quality originals, the project may need to be set-up differently. It may be more cost effective to scan the entire project in grayscale or color rather than to make constant adjustments to the scanner settings. An additional tactic is to flag or sort poor quality original, so that, special care is taken to get the best image attainable.
Image Inspection and Quality Control
In this stage of the project, the images are inspected for quality. In most cases, a 10% document quality check is satisfactory where 1 in 10 documents are viewed for quality. In some cases, there may be a 100% image inspection using quality control software. Another form of image inspection is performed at the time of indexing. The data entry operator can flag poor quality scans for further review.
This step is known as post-processing. The image enhancement may be done at the time of scanning or in a batch process after scanning is complete. This is usually to correct some deficiency in the images that do not require rescan. Some examples of image enhancement include rotation, blank page suppression, border removal and despeckling.
Document Validation and Index Verification
This stage of the project is to assure that 100% of the documents have been scanned and that the index is correct. As the documents are boxed, a log sheet should be generated for each box. Upon completion of scanning, a quality manager should check that each document on the log sheet has been scanned. The Index should also be verified against the log sheet to note any discrepancies. The recommended to verify the index is double keying. One data entry operator enters the data into the system and an independent data entry operator verifies each entry against the image.