It enables applications to acquire images from all kinds of digital cameras and scanners. WIA (Windows Image Acquisition), introduced by Microsoft since Window Me, is the driver platform delivered with the Windows OS, including Windows 7, Windows 8, etc. The best of TWAIN direct is still to come. The application will be able to communicate directly with scanning devices. The TWAIN working group, that Dynamsoft is an associate of, claims that with TWAIN direct vendor specific drivers will no longer be needed.

The TWAIN standard is now evolving to the next generation, called TWAIN direct. It’s good if you want to use features specific to a particular scanner model, but if you want your application’s scanning behavior to be consistent on different scanners, you need to be wary of customized code. The Source Manager Interface provided by TWAIN allows your application to control data sources, such as scanners and digital cameras, and acquire images, as shown in the figure below.Īlthough nearly all scanners contain a TWAIN driver that complies with the TWAIN standard, the implementation of each TWAIN scanner driver may vary slightly in terms of scanner setting dialog, custom capabilities, and other features. In most cases, users should be able to either get a free TWAIN driver or easily find one (from the manufacturer’s website). Here is a list of TWAIN certified drivers: Especially, these scanner vendors are members of the TWAIN working group: Fujitsu Computer Products of America, Kodak Alaris, Epson America, HP, and Visioneer.

TWAIN is the most commonly used protocol and the standard in document scanners. Where do I get a TWAIN compatible scanner? It was designed as an interface between image processing software and scanners or digital cameras. TWAIN is scanning protocol that was initially used for Microsoft Windows and Apple Macintosh operating systems, and it added Linux/Unix support since version 2.0. These four document scanning drivers have some different scanner functionalities and compatibilities, which makes them suitable for different situations. Although they are trying to achieve the same task basically, a popularity search shows that TWAIN is leading the game. TWAIN, WIA, ISIS and SANE, are all scanning drivers that support acquiring physical images from scanners and storing the digital images on a computer. Naturally, you may be confused as to what is the best solution for you. There are several different scanning drivers in the market: Document scanning functionality is a critical component for a software developer building a website, content management system, or office automation system.

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