A Two-Stage Binarizing Algorithm for Automatic 2D:4D Finger Ratio Measurement of Hands with Non-Separated Fingers
Chapter, Peer reviewed
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Original versionSandnes, F. E. (2015, November). A two-stage binarizing algorithm for automatic 2D: 4D finger ratio measurement of hands with non-separated fingers. In Innovations in Information Technology (IIT), 2015 11th International Conference on (pp. 178-183). IEEE. http://dx.doi.org/10.1109/INNOVATIONS.2015.7381536
2D:4D finger ratios are commonly measuredmanually. Previous automatic methods haverelied on the fingers being spread apart for successful detection. This study proposes an improved automatic finger-ratio measurement approach that does not require the fingers to be spread apart. The approach comprises a two-stage binarizing algorithm. First,the hand is separated from the background.Second,the various fingers are separated such that a unique outline of the hand can be obtained and thus the 2D:4D finger ratio can be measured. The algorithm achieves accurate results of66% ona test-suite of flatbed scans of two-hand images. Automatic validation of measurement quality is also discussed.