Human proofreaders usually check the output for errors.
Transparent plastic or glass sheets are usually pressed against the page to flatten it.Īfter scanning, software adjusts the document images by lining it up, cropping it, picture-editing it, and converting it to text and final e-book form. Pages may be turned by hand or by automated paper transport devices. The curvature in the gutter is much less pronounced this way. A non-destructive method is to hold the book in a V-shaped holder and photograph it, rather than lay it flat and scan it. One solution is to separate the book into separate pages by cutting or unbinding. In manual book scanners, the glass plate extends to the edge of the scanner, making it easier to line up the book's spine.Ī problem with scanning bound books is that when a book that is not very thin is laid flat, the part of the page close to the spine (the gutter) is significantly curved, distorting the text in that part of the scan. In an ordinary commercial image scanner, the book is placed on a flat glass plate (or platen), and a light and optical array moves across the book underneath the glass. Image scanners may be manual or automated. To convert the raw images optical character recognition (OCR) is used to turn book pages into a digital text format like ASCII or other similar format, which reduces the file size and allows the text to be reformatted, searched, or processed by other applications. Common file formats are DjVu, Portable Document Format (PDF), and Tagged Image File Format (TIFF). Large scale book scanning projects have made many books available online.ĭigital books can be easily distributed, reproduced, and read on-screen. Book scanning or book digitization (also: magazine scanning or magazine digitization) is the process of converting physical books and magazines into digital media such as images, electronic text, or electronic books (e-books) by using an image scanner.
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