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Sketch of a V-shaped book scanner from Atiz Sketch of a typical manual book scanner. Commercial book scanners are not like normal scanners; these book scanners are usually a high quality digital camera with light sources on either side of the camera mounted on some sort of frame to provide easy access for a person or machine to flip through the pages of the book.
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Both practices can damage rare books; For example, opening a book 180 degrees can be damaging to its spine. These scanners are also implemented to scan other fragile documents such as old maps. However, planetary scanners that allow the book to open to a full 180 degrees have special features that protect the book binding from being damaged.
A planetary scanner is a type of very-high-resolution document camera used for capturing certain fragile documents. [57] A book scanner is another kind of document camera, pairing a digital camera with a scanning area defined by a mat to assist in scanning books. Some more advanced models of book scanners project a laser onto the page for ...
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Figure 1. Probabilistic parameters of a hidden Markov model (example) X — states y — possible observations a — state transition probabilities b — output probabilities. In its discrete form, a hidden Markov process can be visualized as a generalization of the urn problem with replacement (where each item from the urn is returned to the original urn before the next step). [7]
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