Computer User Verification Based on Typing Habits and Finger-Knuckle Analysis

The Method of Automatic Knuckle Image Acquisition for Continuous Verification Systems

“…The proposed method of automatic acquisition of a finger knuckle image can be used as a part of the continuous verification system. In this study, the continuous verification method based on [12,14] was developed. The general principle of operation of the method is presented below.…”

“…For this purpose, there was used, inter alia, the Frangi filter [24,25] and Otsu binarization. The Shape Contexts (SC) and Thin Plate Spline (TPS) [12,[26][27][28] methods were used to calculate the similarity between the test images of knuckles and the reference image registered earlier in the database. A proper use of these methods allows preliminary matching the furrows present in the two images being compared.…”

“…In the proposed method, the knuckle images are captured on the fly and knuckle verification is performed continuously. The principle of operation of the used continuous verification process has been given in [12,[26][27][28].…”

“…For the tests of continuous multi-biometric system, there were selected systems combining the analysis of dynamics of typing on the keyboard with the analysis of the image of the knuckle. The methods were developed by the Author and described in detail in [12,13,15]. In the proposed methods, the verification of user's identity is performed in two stages.…”

“…The use of this feature consists of allowing the analysis of skin furrows visible on the surface of a knuckle. Examples of methods used for analysing a knuckle can be found in [12][13][14][15]. Unfortunately, also in the case of this feature, the acquisition requires putting a hand in a special scanner.…”