So-called zonal OCR represents another important function for some areas of application, particularly for large-format blueprints. Languages like Arabic, Hebrew, Chinese, Japanese or Korean can incur additional costs, depending on the provider. As well as common Latin-alphabet languages like French and Spanish, support for others can be just as important. Language support is important if handling documents in more than just English. Good OCR engines are also distinguished by their use of dictionaries as comparison tools for the individual letters they recognize. On the other hand, there are solutions that run faster but have worse recognition rates. Professional OCR solutions – like those provided by the members of the PDF Association – use complex software algorithms to achieve the maximum possible recognition rates, but require more processing time. This comes into effect in particular in particularly high-volume mailrooms, which need to scan a very large number of pages in a short space of time. High performanceĪnother key criterion is the performance of the OCR engine. An application like the free Foxit Reader has a helpful feature for scans that directly displays text detected with OCR.
Copying and pasting the text is enough for a simple visual check in Word. The state of the art in today’s color scans is a resolution of 300 dpi. However, an ordinary business document can still be scanned with a high level of accuracy, provided professional scanning hardware is used. Meanwhile, when scanning and capturing old yellowing papers or faded faxes, businesses need to accept the probability of smears and similar problems. One nice simple test that readers can try is to ask their OCR system to find instances of a word like “Christmas” when it has been split across two lines to read “Christ-mas”. If the OCR detects “Hel1o Wor d” instead of “Hello World”, for example, everything from simple searches to modern AI-driven applications simply will not work. The most important thing, of course, should be the quality of the text recognition – which needs to be as high as possible. However, many managers are still unsure whether to upgrade an existing OCR solution or pick up a new one entirely. This, after all, is what makes it possible to convert scanned documents into text that can be selected, searched and edited. These days, scanning documents to Portable Document Format (PDF) or PDF/A, with text recognition, should be part of every company’s day-to-day operations.
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