Effect of Human Interaction on Fingerprint Matching Performance, Image Quality, and Minutiae Count
Written by admin // March 30, 2008 // Fingerprint, HBSI, Image Quality, Performance, Publications and Presentations, Research Discussion // Comments Off
The purpose of this study was to investigate the effect of five different force levels (3, 5, 7, 9, and 11N) on fingerprint matching performance, image quality scores, and minutiae count between optical and capacitance fingerprint sensors. Three images were collected from the right index fingers of 75 participants for each sensing technology. Descriptive statistics, analysis of variance, and Kruskal-Wallis nonparametric tests were conducted to assess significant differences in minutiae counts and image quality scores, respectively, based on the force level. The results reveal a significant difference in image quality score based on the force level and each sensor technology, yet there is no significant difference in minutiae count based on the force levels of the capacitance sensor. The image quality score, shown to be effected by force and sensor type, is one of many factors that influence the system matching performance, yet the removal of low quality images does not improve the system performance at each force level. This surprising discovery indicates further research is needed to identify other factors that may be manipulated to improve the interaction between a user and the device, and the subsequent matching performance.