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。
An automatic seal identification scheme is proposed, which USES the adaptive feature extraction and support vector machine.
文章提出了一种基于自适应特征提取和支撑向量机的印鉴自动识别方法。
Detecting regions of interest(ROIs) is the base step for object's feature extraction, identification and tracking.
感兴趣区域定位是提取目标特征，进行目标识别与跟踪等后续处理的重要基础。
The results show that this approach has very high speed of operation and good results of feature extraction and can be used for actual personal identification system.
实验结果表明，该方法计算速度快，提取特征的效果好，可用于实际的身份鉴别系统。
The process of fingerprint identification can be divided into three steps: preprocessing of fingerprint images, feature extraction and feature matching.
指纹识别大致可以分为三个阶段：指纹图像预处理，指纹特征提取和指纹特征匹配。
Fingerprint identification can be divided into three processes: fingerprint image pre-processing, feature extraction and fingerprint match.
指纹识别主要分为指纹图像预处理，特征提取，指纹匹配三个步骤。
Automatic seal identification belongs to pattern recognition domain and includes seal segmentation, seal registration, feature extraction and feature identification these steps.
印章自动鉴定属于图像模式识别领域，其主要分为印文分割、印文配准、特征提取及特征识别几个步骤。
Iris recognition process is divided into image preprocessing, feature extraction and matching identification.
虹膜识别过程主要分为图像预处理、特征提取和匹配识别。
Because complex vibrating targets are more complex than single-frequency targets, so it is more practical to research the feature extraction and identification of complex vibrating targets.
复合振动比单频振动更复杂，因此研究复合振动目标的特征提取与识别更具现实意义。
Result shows that this algorithm is fast in feature extraction and identification, with especially good performance at low quality images.
实验结果表明，该算法特征提取和识别速度快，尤其对于清晰度不高、现场拍摄的纹理图像具有较好的效果。
Feature point extraction and tracking method is an important contents to studying imaging-based target tracking, and avails to the research on target identification, maneuver detection and so on.
特征点的提取和跟踪是基于图像的目标跟踪技术研究中的一项重要内容，对目标识别、机动检测等有着重要意义。
This paper was a review of the methods of feature extraction and feature selection for spam image identification.
对垃圾图像判别问题中的特征提取和特征选择研究现状进行了总结。
The algorithm has four major steps, feature extraction, object identification, auxiliary image creation and object mining.
算法主要由四步组成：属性抽取，对象鉴别，辅助图像创建和对象挖掘。
Wavelet packet Analysis is applied to feature extraction of ultrasonic signals, and the support vector machine is employed to perform the identification task.
然后利用支持向量机分类方法对缺陷进行识别。
Wavelet packet Analysis is applied to feature extraction of ultrasonic signals, and the support vector machine is employed to perform the identification task.
然后利用支持向量机分类方法对缺陷进行识别。
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