OCR - the Big Breakthrough
Optical Character Recognition or OCR is a technological advancement in the field of pattern recognition that transforms printed/handwritten text into electronically legible text files. Retrieving text from an image was a challenge until the advent of OCR PDF tools since a scanned document is invariably treated as an image file, even in PDF format. Optical character recognition software attempts to interpret each character on an image file, compare it with a preset list of characters and fonts, and produce the digital equivalent of it which is in an editable, searchable format. Such text in a PDF image file can be exported to other word processing applications through the Copy-and-Paste technique.
OCR PDF Files Tools
PDF or Portable Document Format files contain a myriad of objects such as text, images, multimedia, complex object like tables, headers, footers, bookmarks, comments, etc. PDF files can be created through several methods. One such method is scanning a paper document and saving it as a PDF image on the computer. OCR PDF file software available in the market are compatible with almost all of the available Operating System platforms, and possess the capacity to batch convert numerous PDF image files at the same time with an average accuracy of 90%. They have a built-in vocabulary list that contains over a million words and most OCR PDF file software can recognize the different font sizes, styles and colors.
Tips to Go About It
To OCR PDF files one should make sure that the paper copies that need to be scanned do not have any blemishes/marks that might hinder the software from recognizing the characters. Due to the same reason, the software shows higher performance with a bright and legibly printed paper than a dull, faded one. Recognizing and digitizing images to text also reduces the file-size considerably and this feature should be appropriately made use of. It is always advisable to go through the `Terms and Uses' before attempting to use software, even if it is available for free. With these tips in mind, one can truly realize that the OCR PDF file software is indeed a big breakthrough in the field of pattern recognition.