When new fingerprints are entered in, image processing techniques are used to find the special cross-hatching, swirls, and end points of each print. These special features are then compared to match up fingerprints.
當有新的指紋被讀進時，便用影像處理的技巧找出畚箕、螺的端點、交叉點等特徵，再用這些特徵做比對，看看是否是同一個指紋。