Lee Geon Ui , Kim Seong Lag

The KIPS Transactions:PartB , Vol. 11, No. 1, pp. 7-12, Feb. 2004
10.3745/KIPSTB.2004.11.1.7,   PDF Download:

Abstract

This thesis studies about thinning compensation and the removal of pseudo minutiae using ridge trace. As for the process of thinning compensation, first, it removes unnecessary pixel when 8-neighbor connection sum among the pixels with the crossing count number 6 is no 3. Second, it deals with repeatedly until there is no pixel to remove while tracing the ridge, beginning with the pixel equivalent to the ridge and the pixel with the crossing count number 2 among the 8 pixels around the pixels with the crossing count number 6. When the thinning compensation is finished, it extracts substitute minutiae to use the crossing count number and the 8-neighbor connection sum. Among the extracted substitute minutiaes, it extracts the real minutiae to utilize the pseudo minutiae removal algorithm again. It compares with the existing method fot the performance evaluation of proposal method. By the experimental results, The proposal method indicated that a degree of thinning is excellent an a lot of minutiaes were removed.

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