TWAIN is a standard for image input devices, such as scanners and digital cameras. Getting an image from a TWAIN device can be very simple. First, there is a standard facility for selecting the input device. It is similar to selecting a default printer, and you can skip this step if you know that the default is right. Then, each TWAIN device has its own user interface, which you invoke to acquire an image.
In order to capture an image, you must have a digital camera, scanner, or other input device connected to your computer. You must also install the TWAIN software drivers that come with the hardware.
Your Twain compliant applications should provide the following:
- Capability to select the source. This is required because you may have more than one TWAIN device attached to your computer.
- The ability to acquire image data.