几何特征的加入使得小样本训练的粗分类器的应用成为现实，提高了眼睛检测的精度。
Then with the characteristics of symmetry of the eyes some of the geometric characteristics are adopted for correction .
整个识别过程由粗到细，融合了几何特征和频域特征。
The whole identification process is from coarse to fine and combines geometric features and frequency domain features.
分析了离心压气机叶轮的几何结构特点、加工工艺，并在此基础上规划了叶轮的粗、精加工刀具轨迹。
Based on the geometry characteristic and processing technique of centrifugal compressor impeller, the tool path of rough and finish machining are scheduled.
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