分析了图像信号相位信息的空间特性，以人脸图像为例，研究了相位信息在图像特征定位中的应用。
The space characteristic of phase information of image signal is analysed, and using face image as an example, the application of phase information in image feature location is studied.
虹膜识别系统一般可由虹膜定位、图像预处理、虹膜特征提取和分类识别几个部分组成。
Iris recognition system is made up by iris localization component, iris image preprocessing, iris feature extraction and classification.
景象匹配是飞行器导航与定位的一种重要手段，其中的雷达图像匹配由于具有全天候的特征而受到人们的重视。
Scene matching is an important means on navigation and location of aeroplane, and radar image matching is thought a lot by reason of all weather.
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