基于SIFT和SDM的虹膜定位方法
發(fā)布時間:2018-10-18 16:42
【摘要】:為了提高虹膜定位的速度和穩(wěn)定性,提出一種基于SDM的快速、穩(wěn)定的虹膜定位算法.該方法首先采用徑向?qū)ΨQ變換粗定位瞳孔,然后采用微積分算子精定位瞳孔;選取SIFT特征描述虹膜外邊緣及眼瞼的邊界特征,采用SDM算法求解定位結(jié)果,最后采用最小二乘法確定虹膜外圓及上、下眼瞼邊界參數(shù).實驗結(jié)果表明該算法大大提高了虹膜定位的效率和穩(wěn)定性.
[Abstract]:In order to improve the speed and stability of iris localization, a fast and stable iris localization algorithm based on SDM is proposed. The method firstly uses radial symmetry transform to locate pupil rough, then uses calculus operator to precisely locate pupil, selects SIFT feature to describe the edge of iris and eyelid, and uses SDM algorithm to solve the location result. The parameters of the outer iris circle, upper eyelid and lower eyelid were determined by least square method. Experimental results show that the algorithm greatly improves the efficiency and stability of iris location.
【作者單位】: 東北大學理學院;
【基金】:國家自然科學基金資助項目(11371081)
【分類號】:TP391.41
[Abstract]:In order to improve the speed and stability of iris localization, a fast and stable iris localization algorithm based on SDM is proposed. The method firstly uses radial symmetry transform to locate pupil rough, then uses calculus operator to precisely locate pupil, selects SIFT feature to describe the edge of iris and eyelid, and uses SDM algorithm to solve the location result. The parameters of the outer iris circle, upper eyelid and lower eyelid were determined by least square method. Experimental results show that the algorithm greatly improves the efficiency and stability of iris location.
【作者單位】: 東北大學理學院;
【基金】:國家自然科學基金資助項目(11371081)
【分類號】:TP391.41
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