非接触型指紋認証を目的とした構造線抽出法(<小特集>画像処理)

概要

論文の詳細を見る
Identification rates are reduced when the surface of the fingerprint input device is soiled or damaged by contact in conventional systems of fingerprint authentication for personal identification. We evaluated the possibility of non-contact fingerprint authentication to address these problems. A method of extracting the principal lines (valley lines) of a fingerprint from the color picture of a fingertip from non-contact visual input is proposed in this study as an approach to non-contact fingerprint authentication. First, an input image is decomposed into 10 subband images using the 2-D discrete wavelet transform three times. Next, the edge component is separated from high frequency subband images. Then, the principle lines are extracted from the combined Y and Z components of an XYZ color system. The experimental result revealed the usefulness of the proposed technique.
社団法人映像情報メディア学会の論文
2005-07-01