Finger edge extraction and finger shape comparisons for person’s identification by using index, middle, and ring fingers

摘要

This research uses the object extracting technique to extract – the thumb, index, middle, ring, and small fingers from the hand images. The algorithm developed in this research can find the precise locations of the fingertips and the finger-to-finger-valleys. The extracted fingers contain many useful geometry features. One can use these features to do the person identification. The orientations of the index, middle and ring fingers are found in this research. Image rotating, image shifting, and image interpolating techniques are used to align different persons’ fingers. Image subtraction is used to exam the difference of two fingers.