Technique for Personal Identification: Using the Extracted Index Finger Image to Identify Individuals

Authors:
Ching-Liang Su
Affiliations:
Department of Industrial Engineering, Da Yeh University, 112 Shan-Jeau Road, Da-Tsuen, Chang-Hua, Taiwan 51505/ e-mail: cls@mail.dyu.edu.tw
Venue:
Journal of Intelligent and Robotic Systems
Year:
2003

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Abstract

This research uses the object extracting technique to extract the index finger image. The algorithm developed in this research can find the precise locations of the different fingers' fingertips and the finger-to-finger-valleys. After finding the positions of the fingertips and finger-valleys, the index finger, middle finger, and ring finger can be extracted separately. The extracted finger-images contain many useful geometric features. One can use these features for personal identification. The orientation of the index finger is found. Image rotating, image shifting, and image interpolating techniques are used to align different persons' index fingers to the same position for comparison. Image subtraction is used to examine the difference between two index finger images. In this research, so far only the index finger has been used as the feature to identify different persons. By using the index finger image, the algorithm developed in this research can very precisely identify different persons.