principal axis of symmetry
... 主应变轴 principal axis of strain 主应力轴 principal axis of stress 主对称轴 principal axis of symmetry ...
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主要合成对称轴 common axis of total symmetry
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首先利用主分量分析法和人脸重心确定人脸对称轴，再结合山谷法进行眼睛候选点的提取和验证。
The principle component analysis and face bray center are used to detect the symmetry axis, and the valley method is applied to detect and verify the eye candidates.
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