![]() can be used to address the scanner directly and to continue using the image data of the scan. Then application programs such as PhotoFiltre etc. ![]() ![]() This must be supplied with the device in a version compatible with the Windows version or may be downloaded and installed at a later date from the manufacturer's website. The data source is formed by the scanner or digital camera driver. TWAIN 2.4, released December 15, 2015, consists of three elements: The data source, the application program and the source manager. TWAIN is is a standard established in 1992 by Aldus Corporation, Eastman-Kodak, Hewlett-Packard and Logitech for exchanging data between image input devices (scanners, digital cameras, etc.) and applications for Microsoft Windows and Apple Macintosh. With modern scanners connected to a computer via USB, the scanner is controlled from applications using two standards: Twain and WIA. Within the text below I will try to explain the various approaches to control scanners and point out the associated problems. ![]()
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