基于OTSU和局部阈值的二次肺实质分割算法，有效的解决了分割不清楚问题，提高了分割质量，且运算简单方便。-Based on OTSU and secondary lung parenchyma of local threshold segmentation algorithm, effectively solve the problem of the division is not clear, improve the quality of the segmentation, and simpl

This paper presents the segmentation algorithm used for localization of iris for the development of robust iris recognition algorithms for biometric process. Iris localization plays a vital importance in iris identification. The method determ