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Establishing handwriting individuality using pattern recognition techniques

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3 Author(s)
S. N. Srihari ; Center of Excellence for Document Anal. & Recognition, State Univ. of New York, Buffalo, NY, USA ; Sung-Hyuk Cha ; Sangjik Lee

We undertook a study to objectively validate the hypothesis that handwriting is individualistic. Handwriting samples of one thousand five hundred individuals, representative of the US population with respect to gender age, ethnic groups, etc., were obtained. Analyzing differences in handwriting was done by using computer algorithms for extracting features from scanned images of handwriting. Attributes characteristic of the handwriting were obtained, e.g., line separation, slant, character shapes, etc. These attributes, which are a subset of attributes used by expert document examiners, were used to quantitatively establish individuality by using machine learning approaches. Using global attributes of handwriting and very few characters in the writing, the ability to determine the writer with a high degree of confidence was established. The work is a step towards providing scientific support for admitting handwriting evidence in court. The mathematical approach and the resulting software also have the promise of aiding the expert document examiner

Published in:

Document Analysis and Recognition, 2001. Proceedings. Sixth International Conference on

Date of Conference:

2001