联合使用车底阴影、边缘信息、轮廓对称、灰度对称、水平线对称等车辆先验知识，提出一种基于特征的车辆检测方法。
Prior knowledge of the vehicles, such as shadows underneath the vehicles, rich edge information, contour symmetry, gray level symmetry, horizontal line symmetry and etc, is combined.
在人脸任意位置下，利用PCA自动确定人脸纵方向，采用网格配准方法提取对称面和对称轮廓线；
The vertical direction of face is determined by the PCA at the random pose. Based on surface registration, the symmetrical surface and symmetrical profile are extracted.
获得的光谱谱线轮廓具有典型的对称性线型，测得的谱线半宽度为3.2千兆赫。
The obtained profile of spectral line has a typical and symmetrical shape of line. The line width (FWHM) was measured to be 3. 2 GHz.
得到的结论为：（1）常源函数与常速度场结合的谱线轮廓为对称轮廓；
The results are: (1) The line profile is symmetrical for constant velocity distribution;
首先结合几何约束与曲率信息定位特征点，根据特征点确定人脸对称面，提取人脸侧面轮廓线。
Then the symmetrical plane of 3D face is determined based on the feature points, and the profile is determined by the obtained symmetrical plane.
提出利用对称动态轮廓模型方法自动检测多景影像的最优镶嵌线。
A new approach based on twin snakes model was presented to detect an optimal seam line automatically in image Mosaic.
提出利用对称动态轮廓模型方法自动检测多景影像的最优镶嵌线。
A new approach based on twin snakes model was presented to detect an optimal seam line automatically in image Mosaic.
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