Through analyzing the iris feature and combining with different feature extraction methods , we can realize iris recognition 通过分析研究虹膜上丰富的纹理特征,结合不同的特征提取方法和分类器可以实现虹膜的身份认证。
Based on the iris biometrics , such processing methods as acquiring , locating , encoding as well as matching for iris image are developed 本文综合分析了虹膜的生理特征,图像的获取装置,虹膜图像的定位、编码和匹配等方法。
In the step of exact location , the district method is adopted in view of the iris edge gradation jump characteristic to accurately to locate the iris the outside edge 精定位阶段针对虹膜边缘灰度跳变特性采取了分区方法准确定位虹膜的外边缘。
The integral - differential method can be used to locate the iris boundaries in eye - images under different illumination cenditions 不同光照下虹膜的边界定位适于采用微积分方法，但是这种方法容易受到光源像点的影响，使得定位失败，并存在实时性差的问题。
The system based on iris recognition is made up of several parts : iris - capturing device , iris preprocessing , iris feature extracting and coding , iris code matching 基于虹膜的识别系统由虹膜获取、虹膜图像预处理、虹膜图像特征提取、模式匹配与识别等几部分组成。
Correctly dealing with complications caused by corneal perforation during operations is very important for the recovery of visual acuity after operation 结论在角膜穿孔伤缝合术中，使用透明质酸钠不仅提高了手术的效率，还减少了术后虹膜的粘连，使患者的视力能恢复得更好。
A personal identification system based on iris patterns is composed of iris image acquisition , image preprocessing , feature extraction and coding , matching and recognition 基于虹膜的识别系统由以下几个部分构成:虹膜获取、虹膜图像预处理、虹膜图像特征提取、匹配与识别。
Ieee signal processing magazine , 16 : 70 - 91 . 18 shekarforoush h , berthod m , zerubia j . subpixel imageregistration by estimating the polyphase decomposition of cross powerspectrum 更为重要的是，这种新方法不仅可以进行亚像素级别的精确配准，而且可以在一定程度上补偿虹膜的非线性收缩运动。
After finding parameter of coarse location , the inner and outer circle can be got based on the parameter because the circle of pupil and circle of iris nearly have the same center 采用二值化的方法获得瞳孔的粗定位的参数后,由于瞳孔和虹膜的外边缘近视为同心圆,该参数可用作提取虹膜外边缘的基础。
Iridology is the study of the patterns and markings in the iris of the eye . through analyzing the changes of the texture and the color of the iris , such as the crypt , the lacunae , the spots and lines , person can know if he is healthy 虹膜诊断是利用个体虹膜图像中发生变异的细节结构,如虹膜中出现的坑洞、裂缝、斑块、线条、颜色变化,通过判断虹膜的这些异常达到疾病诊断的目的。
