【摘要】 对目前基于Sobel算子的指纹区域的方向估计进行了优化和改进,并提出了一种全新的投票加权的指纹方向校正方法,利用Poincare方法求奇异点时的部分结果校正错误的方向,在提高了算法速度的同时也获得了准确的指纹方向图,指纹图像增强的结果显示了本算法的优越性,具有很强的实用价值.更多还原

【Abstract】 Optimization and improvements are made on the existing orientation estimation of fingerprint area based on the Sobel operator. A new voting weighted method for the correction of error direction is then put forward. When Poincare is adopted for singular point value, accuracy and speed of the algorithm are acquired at the same time. It is proved through the enhancement of fingerprint images that this algorithm is advantageous with practical value.更多还原