A novel control system for image input device, especially fingerprint image
input device, is disclosed. The control system comprises a fingerprint
image input device selection module, an instruction conversion module and
a fingerprint image size determination module. The fingerprint image input
device selection module selects a particular fingerprint image input
device from a variety of fingerprint image input devices. The instruction
conversion module generates, upon an image capture instruction or a match
instruction from a fingerprint verification software, particular image
capture instructions to a the selected fingerprint image input device,
wherein the instruction pertains to a specification of image as selected
by a user or determined with a particular method. The fingerprint image
size determination module determines the specification, including the
resolution and the size of fingerprint image to be captured. The
fingerprint image input device then capture a fingerprint image according
to the instruction, under the selected or designated specification. This
invention also discloses a method to determine a basic point and to
capture a fingerprint image within an area based on the basic point.
