In this paper, we have developed image grabber for taking rolling fingerprints using the live scan fingerprints input system. The image grabber was designed to PC substitution board to use in PC. It was composed of video input, Am and D/A converter, a...
In this paper, we have developed image grabber for taking rolling fingerprints using the live scan fingerprints input system. The image grabber was designed to PC substitution board to use in PC. It was composed of video input, Am and D/A converter, address counter, memory control part, system control part, and rolling input control part. It has two video input channels and one video output channel, and frame memory can memorize two frames of 512 × 480 8bits gray image. It also has mode select function which can select size of a pixel as 1:1 or 4:3 ratio and rolling fingerprints input function which is proposed in this paper.
In the experiment result, the feature points of fingerprints were extracted average 35% more rolling fingerprints using the developed image grabber than plane fingerprints.