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Like any biometric application, a Fingerprint SDK based application has four basic steps: initializing the Fingerprint SDK library, start capturing images from a fingerprint reader or loading them from files, extracting a template for each image, choosing among enrolling a template or matching it against others on database. Usually the "capturing/extracting/enrolling or matching" steps are repeated until the application is finished. |
Fingerprint capture overview
Once the capture module is initialized, whenever a supported fingerprint reader is plugged or unplugged into the computer, a corresponding event is fired. In case of a plugging event, the image capture may be started on the fingerprint reader.
Whenever a finger is placed over a fingerprint reader - assuming such reader is capturing images - the corresponding event is fired. Once the fingerprint image is captured, a new event is fired. Finally, when the finger is removed from the fingerprint reader, the corresponding event is also fired.
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When the capture module is initialized, a special sensor is automatically plugged, firing the corresponding plugging event: the "File" sensor. Enabling image capture on this special sensor is required in order to load fingerprint images from picture files. |