The DPI at which a document is stored also limits the effectiveness of the ZOOM function on an image display station. A 200 DPI document will zoom up nicely to 2X on a 120 DPI monitor but a document stored at 100 DPI will begin to disperse at 2X. Zoom. The scanning mode depends on the scanner type and some scanners offer all modes. The mode is selected by the project team based on the kind of documents to be imaged. In high volume applications, one mode is normally selected for all documents.
Scanners are only the most common method of capturing an image.
There are other methods, for example digitizing cameras, but the principles are the same. Once an image is scanned it is stored for further use as a computer file on a media, such as magnetic disk. The extension is a designation for the file format used for storage. Because an image file is quite large as compared to a text file, image files are often compressed. The information in this section is specific to multiple pieces of paper in one document as opposed to two sides of a page.