摘要
讨论和分析了数学形态学在在线掌纹图像处理中的应用.该方法应用数学形态学进行掌纹定位分割和增强处理.结合在线掌纹图像的特点采用形态学运算提取掌纹轮廓线,规范手掌质心,然后选取以质心为中心的合适大小的方形区域作为特征有效区域.在有效区域内进行形态学Bot-Hat变换检测出掌纹纹线进行增强处理,对增强后的图像进行傅立叶变换在频域空间进行特征提取和匹配.通过实验,论证了上述方法的有效性和可行性.
The application of mathematical morphological algorithms in online palmprint image analysis is presented.The mathematical morphological algorithm is used for palmprint segmentation and palm-lines enhancement.Based on the characteristics of online palmprint image,the mathematical morphological algorithm can extract the contour of the palm and normalize palm centroid.Then taking the centroid as a center,a quadrate feature available area is segmented.The morphological Bot-Hat transformation is used to extract ...
出处
《东南大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
2006年第S1期135-138,共4页
Journal of Southeast University:Natural Science Edition
关键词
数学形态学
掌纹
图像分割
傅立叶变换
特征提取
mathematical morphological algorithms
palmprint
image segmentation
Fourier transform
feature extraction